DEV Community: ONLYOFFICE

What's new in ONLYOFFICE Docs 9.3: Enhanced PDF Editor, Multipage View, Solver in sheets, and more

Kseniya Fedoruk — Wed, 25 Feb 2026 16:37:50 +0000

The wait is over! ONLYOFFICE Docs 9.3 is here, bringing over 30 new features, significant performance improvements, and more than 500 bug fixes. This release is packed with tools to enhance productivity, collaboration, and user experience across documents, spreadsheets, presentations, and PDFs. Let’s dive into the highlights!

Enhanced PDF Editing and Signature Options

PDF management just got a major upgrade. ONLYOFFICE Docs 9.3 introduces new tools to make working with PDFs more flexible and secure:

Expanded Signature Options: Users can now sign PDFs by typing custom text in a professional font or drawing directly on the screen. Enterprise users can also upload signing certificates for trusted digital signatures.
Password-Protected Editing: Unlock and edit password-protected PDFs with ease.
Link Management: Create and edit links to external resources or internal pages, even in Commenting mode.
Additional Enhancements: Version history for PDFs, built-in font editing, redaction tools, and more.

Document Editor: Collaboration and Layouts Made Easy

The Document Editor in ONLYOFFICE Docs 9.3 focuses on improving collaboration and layout management:

Multipage View: Review multiple pages side-by-side for better layout visualization.
Enhanced Comments: Unique user colors and precise text highlighting make collaboration clearer.
Header & Footer Tab: All header and footer options are now consolidated for easy access.
Improved Text Selection: Double- or triple-click to select multiple words or entire paragraphs.

Spreadsheet Editor: Speed and Precision

For data analysts and spreadsheet enthusiasts, ONLYOFFICE Docs 9.3 delivers:

Solver Tool: Solve linear problems using the Simplex method directly in your sheets.
Dynamic Arrays: Formulas can now return multiple results that automatically "spill" into neighboring cells.
Expanded Formula Library: New functions like REGEXTEST, REGEXREPLACE, and REGEXEXTRACT for handling complex text data.
Performance Boosts: Faster rendering of large spreadsheets and improved COUNTIF function.

Presentation Editor: Dynamic Visuals

Presentations come to life with support for GIF animations in slideshow mode, adding dynamic motion without external tools.

Additional Features Across the Suite

Hyperlinks: Add links to images, shapes, and groups in documents and spreadsheets.
Markdown Support: Save files in .md format.
TSV Viewing: Open Tab-Separated Values files for better data handling.

Admin Panel Upgrades

Enterprise admins get new tools for managing ONLYOFFICE Docs instances, including HTTPS certificate management, custom font uploads, and detailed tenant statistics.

Explore the New Features in Action

To see all these features in detail, check out the free webinar:

Ready to try it out? Download the self-hosted version of ONLYOFFICE Docs 9.3.

Check out the full changelog for a complete list of the improvements.

ONLYOFFICE API updates: What’s new in December 2025

Kseniya Fedoruk — Wed, 17 Dec 2025 09:28:19 +0000

The end of the year brings a massive wave of updates to the ONLYOFFICE API. Version 9.2 of ONLYOFFICE Docs is here, and with it comes a significant expansion of our Office JavaScript API, new capabilities for plugins and macros, and essential documentation improvements.

For developers building on top of ONLYOFFICE, these updates offer more granular control over document elements, enhanced form manipulation, and better integration tools. Whether you are automating document creation, building complex plugins, or integrating DocSpace, this release has something for you. Let’s dive into the technical details.

Office JavaScript API: Expanded control

Office JavaScript API has received a substantial number of new methods across the suite.

Enhanced form manipulation

Working with forms programmatically is now more powerful. We have introduced fresh methods to handle form elements with precision.

CheckBoxForm methods. You can now dynamically manage labels for checkboxes in both the Form API and Text Document API:

ApiCheckBoxForm/GetLabel
ApiCheckBoxForm/SetLabel

Lifecycle and ID management. We have standardized how you interact with form objects. New Delete and GetInternalId methods have been added for virtually every form type in both the Form API and Text Document API. This includes:

ApiCheckBoxForm
ApiComboBoxForm
ApiComplexForm
ApiDateForm
ApiFormBase
ApiPictureForm
ApiTextForm

This granular control allows for cleaner code when managing dynamic forms, letting you remove elements or reference them by internal IDs programmatically.

Paragraph methods for Presentation and Spreadsheet APIs

One of the biggest additions in this update is the expansion of ApiParagraph methods to the Presentation and Spreadsheet APIs. Previously, deep paragraph manipulation was primarily the domain of the Text Document API. Now, you can apply rich text formatting and structural changes directly within slides and sheets.

Structure: InsertParagraph, Push, Last, GetLastRunWithText.
Formatting: SetBold, SetItalic, SetUnderline, SetStrikeout, SetDoubleStrikeout, SetCaps, SetSmallCaps.
Styling: SetColor, SetFontSize, SetFontFamily, SetSpacing.
Properties: GetFontNames, SetTextPr.
Data: ToJSON, GetInternalId.

This unifies the developer experience across editors, making your code more reusable whether you are generating a report in a document or formatting a text box in a slide deck.

Unit conversion helpers

Handling measurements in Office Open XML often requires converting between English Metric Units (EMUs) and standard units. We’ve added helper methods to the Presentation, Spreadsheet, and Text Document APIs to simplify this:

Api/EmusToMillimeters
Api/MillimetersToEmus

Navigation and content access

For the Text Document API, we have improved cursor movement and content insertion, which is crucial for macros that automate typing or editing:

ApiDocument/MoveCursorDown, MoveCursorLeft, MoveCursorRight, MoveCursorUp
ApiDocument/EnterText
ApiDocument/InsertParagraphBreak

Additionally, accessing content within presentations and spreadsheets is easier with new ApiDocumentContent methods like GetAllParagraphs, GetCurrentParagraph, and GetText.

Check the full list of new methods

Plugins for Docs: better dev experience

Building plugins is about more than just the code; it’s about the developer experience and the final user interface.

Debugging tutorials

We have added a new Debugging subsection to our tutorials for both web and desktop editors. These guides will help you troubleshoot your plugins faster and more effectively.

UI consistency

Icons: We updated the plugin Icons page with best practices. Adding icons is a small step that significantly improves usability and makes your interface intuitive.
Theming: A new “How to customize themes” page explains how your plugin can detect the current editor theme and react accordingly. This ensures your plugin looks native, whether the user is in Dark Mode or Light Mode.

Localization troubleshooting

We added a Troubleshooting section to the Localization page to help you resolve common issues when translating your plugins for a global audience.

DocSpace SDK updates

For developers integrating our room-based collaboration platform DocSpace, the JavaScript SDK has been updated. The documentation structure has been refactored and is now automatically generated using files directly from DocSpace, ensuring that the reference you read is always in sync with the actual code.

API documentation site improvements

We are constantly improving the API documentation site to make it faster and easier to use.

Engine: We updated Docusaurus to version 3.9.2.
System theme mode: The documentation site now supports system theme detection, respecting your OS preference for dark or light mode.
Usability & localization: We have redesigned the documentation start page and improved the Chinese documentation, including the fully translated Desktop Editors section.

Useful links

API documentation

API changelog

Download developer builds

ONLYOFFICE updated: AI agents & custom hotkeys in new releases

Kseniya Fedoruk — Tue, 02 Dec 2025 13:31:04 +0000

We are excited to announce major updates across our ecosystem: ONLYOFFICE DocSpace 3.6 and ONLYOFFICE Docs 9.2. These releases introduce a new layer of intelligent assistance with AI Agents in DocSpace and bring significant productivity enhancements to the editors, including customizable hotkeys and macro recording. Let’s explore what’s new for developers and power users.

Meet your new AI agents in DocSpace 3.6

The main highlight of DocSpace 3.6 is the introduction of AI agents, bringing intelligent assistance directly into your collaborative workspace. These agents are designed to help you and your team work faster and more efficiently.

You can set up an AI agent tailored to your specific needs. Once configured, you can interact with it through a dedicated chat interface. Simply ask questions or describe your task, and the agent is ready to help.

The AI can perform a wide range of tasks to support your projects:

Analyze files: Dive deep into documents to check for accuracy, suggest improvements, or summarize key points.
Generate content: Create text, brainstorm ideas, or draft communications based on your prompts.
Search for information: Look up information across the web and your own personalized knowledge base.
Manage your DocSpace: Organize files, structure rooms, add users, and keep your workspace tidy.
Invite teammates: Collaborate with colleagues directly within the AI agent chat.

Getting started with AI agents

Enabling AI agents in your DocSpace is straightforward. A new AI Settings section serves as your central hub for managing all AI-related functionalities.

1. Add an AI provider
First, you'll need to connect an AI provider to power your agents. Make sure you have an API key from your chosen provider. Currently, we support OpenAI, Anthropic, TogetherAI, and OpenRouter, with more options planned for future releases.

2. Enable MCP Server
Next, enable the MCP (Master Control Program) server. You can activate the ready-to-use ONLYOFFICE DocSpace MCP Server, which empowers AI agents to interact with and manage elements within your DocSpace, like creating rooms or organizing files. You can also connect any other MCP server for enhanced capabilities.

3. Connect web search and knowledge base
To expand your AI's capabilities, enable the web search engine. This allows the agent to pull information from the internet. You should also activate the knowledge base, which indexes your documents, allowing the AI to perform intelligent, question-based searches through your own data.

4. Create and manage your first agent
Once the setup is complete, you can build your first agent. Give it a name, cover, and tags. You can also provide specific instructions to define its purpose, such as, "Chats in this room are for discussing our startup project. Please stay on topic." You can also set storage quotas for your AI agents to control memory consumption.

When you invite collaborators, you can assign specific roles:

Agent Managers have full control over settings, users, and the shared result space.
Content Creators can edit files, upload knowledge base content, and view results.
Viewers have read-only access to the shared result space.

All AI-generated files can be saved to a dedicated Result Storage space, where you can continue editing or share them. The Chat History lets you revisit previous prompts and results at any time.

What's new in ONLYOFFICE Docs 9.2?

Beyond the platform-level AI in DocSpace, ONLYOFFICE Docs 9.2 introduces powerful features directly into the editors, focusing on productivity and customization.

AI-powered grammar & spelling

The AI plugin now includes integrated spell and grammar checking. To use it, simply navigate to the AI tab and select Grammar & Spelling. The AI analyzes your text and provides suggestions with explanations, which you can accept or reject. It's a quick way to ensure your documents are polished and professional.

Customizable keyboard shortcuts

For many developers, an efficient workflow relies on keyboard shortcuts. You can now customize these shortcuts to match your personal preferences. Go to the File tab, open Advanced Settings, and configure your preferred key combinations for a truly personalized editing experience.

Record actions as macros

Repetitive tasks can slow down your progress. With the new macro recording feature, you can automate these actions. Simply record a sequence of actions, save it as a macro, and run it whenever you need to perform that task again. This is a powerful way to streamline your work and save valuable time.

Other improvements in Docs and DocSpace

Enhanced PDF redaction: You can now customize the color used for the Redact option in the PDF Editor, giving you more visual control when preparing documents for sharing.
Improved form creation: Add descriptive text labels to checkboxes and radio buttons. You can also assign specific roles to fields when inserting them into a form, ensuring they are correctly tailored to different users.
New format support: DocSpace 3.6 adds support for the HML format and allows you to convert presentations to TXT files.
Redesigned data import: The data import tool has been overhauled for a smoother and more intuitive experience when migrating your files.

Get the latest versions

These updates are designed to make your work more intelligent, efficient, and customized. The new AI agents in DocSpace 3.6 provide a collaborative assistant for your projects, while the features in Docs 9.2, like customizable hotkeys and macro recording, offer significant productivity gains.

The latest updates are already available in the cloud. You can sign into your DocSpace to try all the new features or create a free account if you are new to ONLYOFFICE. Self-hosted builds are also available.

Power up your integrations: ONLYOFFICE API updates in Docs 9.1 & DocSpace 3.5

Kseniya Fedoruk — Wed, 29 Oct 2025 13:50:05 +0000

The latest releases of ONLYOFFICE Docs 9.1 and DocSpace 3.5 are here, and they bring a host of powerful API enhancements for developers. These updates are designed to give you more control, flexibility, and power when integrating ONLYOFFICE into your applications. Let's dive into the specifics and explore what you can now achieve.

New format support and conversion

To broaden document compatibility, we’ve added support for new formats and expanded the conversion capabilities:

opening HML files;
converting PPTX presentations into TXT format.

Customization

We’re giving you more control over the look and feel of the editors. The editorConfig.customization.uitheme parameter, which defines the editor’s theme, is now available for mobile editors. This allows you to create a consistent visual experience across all platforms.

We’ve also updated the size requirement for the editorConfig.customization.logo.image. You can now use an image with dimensions of 300×20 pixels to display your custom logo in the editor’s header.

const config = {  
   editorConfig: {    
     customization: {
      logo: {        
      image: "https://example.com/logo.png",
      ....
      uiTheme: "theme-dark", ...

WOPI integration

For those using the Web Application Open Platform Interface (WOPI), we’ve introduced the UserCanOnlyComment property to the CheckFileInfo operation. This boolean property lets you specify if a user should have comment-only permissions, restricting them from making other edits.

Additionally, we’ve improved error handling. If a document cannot be locked via WOPI, it will now open in viewer mode with an appropriate error message, ensuring a smoother user experience.

New method for plugins

We’ve expanded the API for spreadsheets and presentations with the RemoveOleObject method (for sheets / for slides). This allows you to programmatically remove an OLE object from a workbook or presentation using its internal ID, providing greater control over embedded content.

expression.RemoveOleObject(internalId);

Office API

Version 9.1 introduces a significant number of new methods to the Office JavaScript API. These additions open up powerful new possibilities for programmatic document manipulation, especially within spreadsheets. Key areas of expansion include:

Conditional formatting: A comprehensive set of methods for managing conditional formatting rules, including above average, color scales, data bars, icon sets, top 10, and unique values.
Geometry and pathing: New methods for working with geometry, paths, and path commands, giving you finer control over shapes and drawings.
Custom XML: Methods for interacting with custom XML parts within documents.
Object and property management: New conversion methods and tools for managing document properties.
Advanced object control: Enhanced methods for working with sections, workbooks, pivot tables, ranges, and presentations.

Check the full list of new methods

Updated SDKs and integration examples

To support these updates, we’ve released an updated Java SDK that is compatible with Docs 9.1. It includes support for the new presentation-to-TXT conversion and HTML format handling.

We’ve also refreshed our test examples for connecting the editors, including Node.js examples that demonstrate format support for Docs v9.1. Check it out on GitHub

Updates in ONLYOFFICE DocSpace 3.5

The new Plugins SDK introduces several key changes aimed at improving security and modal dialog functionality.

Enhanced file security: We have moved file security settings into a separate FilesSecurity enum for better organization and clarity. The IFileItem interface now includes fileSecurity and security properties.
Improved modal dialogs: You can now create modal dialogs with more control over their appearance using the withoutBodyPadding and withoutHeaderMargin properties. We’ve also added the updateCreateDialogModal action for dynamic updates.
Smarter create dialogs: The ICreateDialog interface has been enhanced with new properties like isAutoFocusOnError, errorText, onError, onChange, isCloseAfterCreate, and isCreateDisabled, giving you more granular control over user interactions and form validation.

You are also welcome to check the updated system plugins (draw.io, Markdown, PDF Converter, Speech-to-Text) based on SDK 2.0.0 in action within DocSpace.

To align with the DocSpace 3.5 release, we have updated our API SDKs across multiple languages. These SDKs provide a convenient way to interact with the DocSpace API, manage files, users, and rooms programmatically.

The updated SDKs are available for:

TypeScript: @onlyoffice/docspace-api-sdk on npm
C#: DocSpace.API.SDK on NuGet
Python: docspace-api-sdk on PyPI

Useful links

What's new in ONLYOFFICE Docs 9.1: PDF Editor with Redact and new annotations, faster formulas, and more

Kseniya Fedoruk — Wed, 15 Oct 2025 13:50:40 +0000

The latest major update for ONLYOFFICE Docs is here, and version 9.1 is packed with features designed to boost productivity, enhance security, and streamline workflows. This release brings a more powerful PDF Editor, significant performance boosts in spreadsheets, and a host of improvements across the entire suite.

Let's break down the key updates from a developer's perspective and see how they can improve your projects and workflows.

A More Powerful PDF Editor

Handling PDFs programmatically or through a web interface just got a lot more powerful. Version 9.1 introduces several key features to the PDF Editor that expand its capabilities.

Securely Redact Information

For anyone building solutions that handle sensitive data, the new Redact feature is a game-changer. You can now permanently remove confidential information from PDF documents directly within the editor.

To use it, switch to the new Redact tab. You can mark text for redaction manually or use the Find & Redact function to target specific strings, patterns, or even entire pages. Once you apply the redaction, the selected content is permanently removed from the file, ensuring data privacy and compliance. This is a crucial feature for legal, financial, or healthcare applications where data security is non-negotiable.

New Annotation Tools & More

Beyond redaction, the PDF Editor now includes new annotation tools. You can draw shapes like rectangles, circles, and arrows directly onto the document, making visual feedback and collaboration more intuitive.

Additionally, you can now insert charts and view SmartArt graphics within PDFs, making it easier to work with visually rich content without leaving the editor.

Big Performance Gains in the Spreadsheet Editor

Data processing and analysis are at the core of many applications. ONLYOFFICE Docs 9.1 delivers significant performance enhancements to the spreadsheet editor, particularly with its formula calculation engine.

Up to 4x Faster LOOKUP Formulas

We’ve re-engineered the logic for LOOKUP, VLOOKUP, HLOOKUP, and XLOOKUP formulas. The improvements are substantial:

Faster Searches: Enjoy up to a 4x speed increase for exact searches with VLOOKUP and linear searches with XLOOKUP.
Reduced Memory Usage: Formula calculations now consume less memory, making the editor more efficient when handling large datasets.
Improved Data Handling: The logic for processing mixed data types has been refined, leading to more accurate and reliable results.

These updates mean that applications relying on heavy data lookups and calculations will feel faster and more responsive for end-users.

More Spreadsheet Enhancements

Several other quality-of-life updates make the spreadsheet editor more functional:

Text Direction (LTR/RTL): You can now set text direction on a per-cell basis, which is essential for applications supporting multiple languages and writing systems.
New "Table Design" Tab: Formatted table settings are now consolidated into a dedicated tab that appears when a table is active.
Date Filters in Pivot Tables: Analyzing time-series data is now easier with support for date filters in Pivot Tables.
View Content Controls: Files containing Spin Buttons, List Boxes, Scroll Bars, and other content controls can now be opened and viewed.

Suite-Wide Improvements for a Better Workflow

Version 9.1 also introduces useful updates that apply across the document, spreadsheet, and presentation editors.

Expanded Format Support

Interoperability is key. This release expands support for more file formats:

HEIF/HEIC: View images in this modern format.
HWPML: Open and view documents created with the Hangul word processor.
Conversions: You can now convert PDF to TXT and PPTX to TXT directly.
MathML: Insert mathematical formulas from the MathML format.

Better Chart Handling

The chart editor is now full-featured in documents and presentations. This allows you to open and edit embedded XLSX files directly, giving you more control over your data visualizations without needing to switch between applications. You can also work with external data sources for charts, choosing to embed a file or link to the source.

New Admin Panel for Server Admins

For those managing self-hosted instances, ONLYOFFICE Docs Enterprise now includes a new Admin Panel. This web-based dashboard provides a centralized interface to monitor server status and manage configuration settings, simplifying administration and troubleshooting.

Explore the New Features in Action

To see all these features in detail, check out the free webinar:

Get Started with ONLYOFFICE Docs 9.1

This latest release delivers a powerful mix of performance boosts, security features, and usability enhancements that developers can leverage to build more robust and efficient document-centric applications.

We encourage you to explore the new features and see how they can benefit your projects. Check out the full changelog for a complete list of the 500+ bug fixes and improvements.

Ready to try it out? Download the self-hosted version of ONLYOFFICE Docs 9.1.

Your feedback is invaluable, so share your thoughts and suggestions on how we can continue to improve.

API Roundup: Latest updates for ONLYOFFICE DocSpace and Docs [Sept 2025]

Kseniya Fedoruk — Tue, 09 Sep 2025 10:24:39 +0000

The latest updates for ONLYOFFICE DocSpace and Docs APIs are here, bringing you new integration possibilities, enhanced tools, and practical solutions to streamline your workflows. Whether you're building document workflows, creating custom plugins, or connecting ONLYOFFICE with your tech stack, these updates have you covered.

DocSpace: Integration samples for Backend REST API

The latest DocSpace API update includes comprehensive integration examples that demonstrate real-world use cases. These aren’t just code snippets – they’re complete solutions you can adapt for your projects.

Trello integrations

Bi-directional user sync. Automatically sync users between DocSpace and Trello boards. This eliminates manual onboarding and ensures team consistency across platforms. Add DocSpace users to Trello / Add Trello users to DocSpace

Asset migration. Import Trello card attachments directly into DocSpace rooms. This scenario streamlines project handoffs and centralizes documentation.

Project structure mirroring. Create DocSpace rooms directly from Trello boards with matching titles. Perfect for maintaining unified project organization. Check the code sample:

import requests

# ONLYOFFICE DocSpace configuration
ONLYOFFICE_API_HOST = "your-docspace.onlyoffice.com"
ONLYOFFICE_API_KEY = "your_onlyoffice_api_key"

# Trello configuration
TRELLO_API_KEY = "your_trello_api_key"
TRELLO_TOKEN = "your_trello_token"
TRELLO_BOARD_ID = "your_board_id"

ONLYOFFICE_HEADERS = {
    "Authorization": f"Bearer {ONLYOFFICE_API_KEY}",
    "Content-Type": "application/json",
    "Accept": "application/json"
}

# Step 1: Get Trello board name
def get_trello_board_name(board_id):
    url = f"https://api.trello.com/1/boards/{board_id}"
    params = {"key": TRELLO_API_KEY, "token": TRELLO_TOKEN}
    response = requests.get(url, params=params)
    if response.status_code == 200:
        return response.json()["name"]
    else:
        print(f"Trello board fetch error: {response.status_code}")
        return None

# Step 2: Create a DocSpace room with board name
def create_docspace_room(room_title):
    url = f"https://{ONLYOFFICE_API_HOST}/api/2.0/files/rooms"
    payload = {
        "title": room_title,
        "roomType": 2,  # Collaboration room
        "private": True
    }
    response = requests.post(url, headers=ONLYOFFICE_HEADERS, json=payload)
    if response.status_code == 200:
        print(f"Room created: {room_title}")
        return response.json()
    else:
        print(f"DocSpace room creation error: {response.status_code}, {response.text}")
        return None

# Run integration
if __name__ == "__main__":
    board_name = get_trello_board_name(TRELLO_BOARD_ID)
    if board_name:
        create_docspace_room(board_name)

Cloud storage integrations

Dropbox connectivity. The new Dropbox integrations support both import and export workflows. Export files from DocSpace using presigned URLs for archiving or backup. Import files directly into specific rooms for centralized document management.

Folder sharing automation. Automatically share Dropbox folders with DocSpace users or group members, creating seamless collaboration bridges between platforms.

Notion and Asana workflows

Notion user integration. Sync Notion workspace users with DocSpace, ensuring consistent access across your documentation ecosystem.

Asana project automation. Generate DocSpace room structures based on Asana projects, with folders automatically created for each task. This creates perfect alignment between project management and document collaboration.

Task-based invitations. Automatically invite Asana task assignees to relevant DocSpace rooms, eliminating manual access management.

DocSpace: Enhanced Plugins SDK

The Plugins SDK receives significant updates with both advanced and basic samples to accelerate plugin development.

Advanced plugin samples

File extension filter plugin. Adds contextual filtering capabilities with a clean modal interface. Users can filter room contents by file type, improving navigation in document-heavy environments.
Modal dialog plugin. Demonstrates custom toolbar integration with backend API calls. Create new documents directly from the interface with user-defined parameters.
Settings plugin UI. Provides administrators with custom configuration interfaces, enabling fine-tuned control over plugin behavior.

Basic component samples

New basic samples cover essential UI components:

API plugin – shows proper platform API connection handling.
Box component – layout and spacing configuration examples.
Button component – interactive element implementation.
ComboBox component – dropdown selection interfaces.
Text component – typography and styling options.
ToggleButton component – binary state controls.

These samples provide the building blocks for more complex plugin development, with clear implementation patterns you can follow.

Docs: Customization

The new suggestFeature parameter gives you granular control over the newly added editor interface element.

const config = {
  editorConfig: {
    customization: {
...
suggestFeature: true,

This parameter controls the visibility of the “Suggest a Feature” menu button in the File tab. Set it to false for internal deployments where feature suggestions aren’t relevant, or keep it true to maintain user engagement with product development.

Docs: New Office API examples

To support diverse use cases, we’ve introduced new document creation samples with practical applications.

Sequential numbers. Enhance table navigation and row referencing by adding sequential numbering to the first column.
Formatted table creation. Automatically format tables during creation by adding borders, styling headers, and aligning text within cells. Perfect for reports, database exports, or templates that require a polished and readable layout.
Spreadsheet with filters. Generate a spreadsheet featuring interactive header filters, enabling users to easily sort and filter data for seamless navigation and analysis.
Footer with date and company name. Automatically add a footer to your document featuring the current date on one side and your company name on the other. Ideal for standard formatting of memos, reports, letters, and templates.
Auto-width table. Generate a document with a table that dynamically adjusts column widths to fit the content perfectly.
Bulleted task list. Generate a document featuring a clear and organized bulleted list, perfect for outlining tasks, steps, or requirements.
Clearing all form values. Instantly reset all form fields in PDF to their initial state for reuse, quick clearing, or input cancellation.
Generating forms from JSON. Automatically create forms from JSON objects, with field types and structure determined by the data context.
Applying color scheme. Easily apply a unified color scheme across your entire presentation for a cohesive look.
Checking for duplicates. Detect and highlight duplicate values in a selected column, perfect for cleaning and analyzing data like customer lists, orders, or employee records.

Check all Office API samples

Docs: Plugins and macros

Explore the concept of the bundled plugin type in ONLYOFFICE. Such plugins remain active across all open documents and even persist in newly opened ones until you manually disable them. Simply click the Background plugins button on the top toolbar to manage them. Examples of such plugins include AI and QR Code Generator.

A plugin is considered bundled if:

it is included in the product distribution (server/desktop);
it has not been updated, removed, or disabled.

Starting from version 9.0.4, bundled background plugins start immediately.

Besides, we have introduced an enhancement for custom functions – direct access to cell address information. This new capability allows for more dynamic and context-aware calculations, making your custom functions even more versatile.

this.address: Retrieves the address of the cell where the custom function is being calculated (e.g., “C5”).
this.args: Provides an array of input arguments. Each argument object includes an address field, which specifies the address of the source cell (e.g., “A1”). The array is structured as follows:

[
  {"address": "arg1_address"},
  {"address": "arg2_address"},
  ...
]

Useful links

ONLYOFFICE Docs 9.0 for developers: API updates

Kseniya Fedoruk — Tue, 01 Jul 2025 13:17:52 +0000

The latest release of ONLYOFFICE Docs is here, packed with updates that deliver more functionality, better customization, and improved performance. If you’re a developer or integrator looking to take advantage of the enhanced APIs, there’s plenty to explore in this version. Check all the details below.

Diagram Viewer

The newly introduced Diagram Viewer is available for web, desktop, and mobile web. It allows opening diagram files without the need for any third-party apps.

Where to find in API: the diagram document type is added to the documentType parameter.

Support for new file formats

ONLYOFFICE continues to expand its usability by supporting further file formats. In version 9.0, it’s possible to open Markdown and OpenDocument Graphic files for viewing.

Where to find in API: added opening for odg and md file types.

Additionally, with the launch of the Diagram Viewer, we added conversion from vsdm, vsdx, vssm, vssx, vstm, and vstx formats. Check API

Expanded customization options

Customization has been taken to new heights in version 9.0, empowering your end users to tailor their ONLYOFFICE experience exactly as they need.

New UI themes

Two new themes, Modern Light and Modern Dark, are presented to optimize the look and feel of each editor.

Where to find in API: The theme-white and theme-night theme ids are added to the editorConfig.customization.uiTheme parameter.

const config = {
  editorConfig: {
    customization: {
...
      uiTheme: "theme-white",
...

Font size selection for the Simplified Chinese UI

The new parameter ensures accurate font sizing in Simplified Chinese layouts, offering the flexibility to use either Western or traditional Chinese styles.

Where to find in API: editorConfig.customization.forceWesternFontSize parameter, the default value is false.

const config = {
  editorConfig: {
    customization: {
....
 forceWesternFontSize: false,
...

Hiding user avatars

The new parameter enables you to toggle user avatars in the editor header, helping create a clean, distraction-free interface.

Where to find in API: editorConfig.customization.layout.header.user parameter, the default value is true.

const config = {
  editorConfig: {
    customization: {
...
layout: {
        header: {
          editMode: true,
          save: true,
          user: true,
          users: true,
        },

Performance boost with preloading

Starting from version 9.0, you can preload static assets (HTML, CSS, JS, fonts) into the browser cache before opening a file to speed up the first-time loading of the document editor. Check API

Two options are available:

1) Using the ?preload=placeholder parameter

<div id="placeholder"></div>

<script type="text/javascript" src="https://documentserver/web-apps/apps/api/documents/api.js?preload=placeholder"></script>

2) Manually inserting a preload iframe

<iframe src="https://documentserver/web-apps/apps/api/documents/preload.html" style="display:none;"></iframe>

API enhancements for plugins and macros

Custom buttons for Content Controls. Utilize the Asc.ButtonContentControl class to create unique buttons for your plugins. Define actions using the attachOnClick method and add your own icons to enhance functionality. Check API

(function(window){
  window.Asc.plugin.init = function()
  {
    let button = new Asc.ButtonContentControl();
    button.icons = '/resources/check%scale%(default).png';
    button.attachOnClick(function(contentControlId){
      Asc.plugin.executeMethod("RemoveContentControl", [contentControlId]);
    });

    button = new Asc.ButtonContentControl();
    button.icons = '/resources/close%scale%(default).png';
    button.attachOnClick(function(contentControlId){
      Asc.plugin.executeMethod("RemoveContentControls", [[{"InternalId": contentControlId}]]);
    });
  }
})(window);

Setting the active slide by its index. Jump to any slide easily within presentations using the new GoToSlide method.

expression.GoToSlide(slideNumber);

Content Control list element. The introduction of the ContentControlListElement enumeration makes managing content controls within documents even simpler.

Asynchronous calculations. Manage any request within the body of a custom function created using macros.

(function () {
  /**
   * World Bank indicator value for a specific year.
   * @customfunction

   * @param   {string} country   ISO-3 code, e.g. "TUR"
   * @param   {string} indicator Indicator code, e.g. "SP.POP.TOTL"
   * @param   {number} year      Four-digit year, e.g. 2024
   * @returns {any}             Numeric value or #N/A
   *
   * @example =WB("TUR","SP.POP.TOTL",2024)
   */
  async function WB(country, indicator, year) {
    // Build URL (World Bank allows CORS)
    const url =
      `https://api.worldbank.org/v2/country/${country}/indicator/${indicator}` +
      `?format=json&per_page=20000`;

    try {
      const r = await fetch(url);
      const [meta, data] = await r.json();

      // Find the row for the requested year
      const row = data.find((v) => v.date === year.toString());
      if (!row || row.value == null) return "#N/A";

      return row.value;               // resolves the Promise
    } catch (e) {
      return "#ERROR";
    }
  }

  // Register the function so it becomes a sheet formula
  Api.AddCustomFunction(WB);
})();

New samples & Office API

With the latest API documentation update, we’ve included even more ready-to-use examples for Document Builder and macros, making your development process smoother and more efficient.

For the Office JavaScript API, we added lots of new methods for the version 9.0, including those for:

Content Controls
Custom XML
Forms
Custom properties
Core
Range
Drawing
Presentation
Notes page

Useful links

ONLYOFFICE Docs for developers

Get the latest version of ONLYOFFICE Docs Developer

API documentation

What's new in ONLYOFFICE Docs 9.0: .md, redesigned interface, AI tools, and more

Kseniya Fedoruk — Wed, 18 Jun 2025 14:59:49 +0000

ONLYOFFICE Docs 9.0 is here, and it’s packed with over 20 new features, hundreds of fixes, and upgrades that make your document editing, collaboration, and visualization workflows smoother than ever. Whether you’re a developer integrating document functionality into your app or just someone looking for better office tools, there’s plenty to explore in this release.

From a sleek new interface to powerful AI-driven enhancements, here’s a breakdown of what’s new in ONLYOFFICE Docs 9.0.

A Fresh Look with a Redesigned Interface

The editors in ONLYOFFICE Docs have received a visual overhaul, ensuring a cleaner, more user-friendly experience across documents, spreadsheets, presentations, and PDFs. The interface has been reimagined with modern aesthetic themes in light and dark modes, so you can pick what works best for your workspace.

Finding your tools has never been easier, making this update perfect for both new and seasoned users looking for an efficient workflow.

Where to find it: View tab → Interface theme → Modern Light / Modern Dark

Introducing the Diagram Viewer

If you’ve struggled with opening diagram files in the past, the new Diagram Viewer is the game-changer you’ve been waiting for. This built-in feature supports Visio files, allowing you to view complex diagrams directly within ONLYOFFICE Docs without requiring additional software.

Now, tracking workflows, visualizing processes, or reviewing technical diagrams is seamless, whether you’re on the web, desktop, or mobile.

Enhanced File Format Compatibility

ONLYOFFICE Docs 9.0 expands its compatibility with additional file types, ensuring that users can handle virtually any document format without issues. Here’s what’s new:

Markdown (.md) support for documentation lovers.
Visio (.vsdx) for diagram files.
OpenDocument Graphics (.odg) for vector images.
Excel Binary Workbook (.xlsb) for users working with large datasets.

AI-Powered Productivity Boosters

ONLYOFFICE Docs 9.0 brings artificial intelligence into your everyday workflows, supercharging your productivity. Here's how:

OCR for PDFs: Extract text from scanned PDF files with a single click, making it usable and ready to edit in seconds. Perfect for those dealing with scanned contracts, forms, or other documents.
AI in spreadsheets: Automate data analysis and formula application, helping you gain insights faster.
AI for macros: Save time by using artificial intelligence to create macros or convert VBA code.

These features aim to simplify tasks that often take up valuable time, letting you focus on higher-priority work.

Upgrades for the PDF Editor

The PDF Editor gets significant enhancements with this release, making document management even easier:

Collaborative PDF form editing: Edit forms together with colleagues in real-time.
Drag-and-drop page reordering: Move pages around using thumbnails for complete customization.
Page copying shortcuts: Duplicate pages instantly with familiar keyboard commands (Ctrl+C/Ctrl+V).

These updates make the PDF editing experience as smooth as working with any standard text document.

New Features in the Document Editor

ONLYOFFICE Docs 9.0 introduces advanced tools that make creating and formatting documents more intuitive:

Paragraph borders: Add or modify paragraph borders easily with a single click.
Content controls: Improved visuals for tracking changes and additional plugin support for creating custom buttons.

Whether you’re writing reports or preparing complex documents, these tools enhance the level of control and precision at your fingertips.

Upgrades for Spreadsheets, Presentations, and More

Each editor gets specific improvements to make your work more effective:

Spreadsheets: Pull external data directly into your workbooks and manage asynchronous calculations with custom functions.
Presentations: Add dynamic elements with enhanced animations in slideshow mode.
Data visualization: Customize charts with Up/Down bars and WordArt text, giving your graphs a polished, professional edge.

These changes ensure flexibility and power for users working in any format.

Improved RTL Support and Localization

ONLYOFFICE Docs 9.0 delivers better right-to-left (RTL) writing support, catering to global users who write in languages like Arabic, Hebrew, or Urdu. Updates include improved cursor navigation, correct border displays, and enhanced paragraph numbering.

Additionally, new localizations and dictionary options, including Urdu and Arabic spellcheck, make the suite accessible to users worldwide.

Share Your Feedback and Shape the Future

With the release of version 9.0, ONLYOFFICE is introducing a new platform for gathering user feedback. Visit feedback.onlyoffice.com to share your ideas for future updates and help shape the next versions of the suite.

Explore the New Features in Action

To see all these features in detail, check out the free webinar:

How to Get ONLYOFFICE Docs 9.0

You can download the latest self-hosted version for developers from the official ONLYOFFICE website. For cloud versions, keep an eye out for the update being rolled out shortly.

This release represents a big step forward in making document editing smarter, more efficient, and more accessible for everyone. If you haven’t yet, try ONLYOFFICE Docs 9.0 today to see the difference for yourself!

Useful links

Windsurf IDE: Leveraging AI in the Online Office Development

Kseniya Fedoruk — Wed, 04 Jun 2025 12:26:04 +0000

Artificial Intelligence (AI) continues to transform various aspects of software development, offering innovative solutions to common challenges. At the forefront of this progress is the DocSpace Frontend team, which embraced an AI-powered code editor to enhance productivity and tackle technical debt head-on. The result? A remarkable improvement in efficiency and results through Windsurf IDE’s integration of sophisticated neural networks.

This article explores the use of Windsurf IDE in development of ONLYOFFICE DocSpace and highlights how its AI-driven tools streamlined processes, solved complex problems, and elevated the team's productivity.

Why Windsurf IDE?

Windsurf IDE is a next-generation development environment designed to maximize programmer efficiency. Through its deep integration with neural networks like ChatGPT 4.0 and Claude 3.5, it offers advanced features for automatic code completion, function generation, and optimization of repetitive development tasks.

What sets Windsurf IDE apart is its personalized approach. Unlike plugins available for Visual Studio Code, Windsurf caters to developers by analyzing entire projects and delivering context-aware suggestions that adapt to individual coding styles. This ability to tailor its capabilities positions Windsurf as a powerful ally for modern developers.

Here are a few instances where Windsurf played a pivotal role in DocSpace's development, showcasing its impact on real-world challenges.

Problem 1: Detecting Issues in the Translation System

The Challenge

DocSpace employs JSON files to manage translations, using a key:value data structure. Developers access translations by invoking functions like t("Namespace:key"). However, issues often arise when keys shift between files without corresponding updates in the code, leading to inefficiencies and errors.

The AI in Action

To address this issue, the team relied on Claude 3.5’s capabilities within Windsurf IDE. They provided the following request:

“Add a new translations test in the common test. I need to find keys that are not in namespaces. For example, ‘Files:Label’ not found in ‘Files.json’ but exists in ‘Common.json.’ Correct usage should be ‘Common:Label.’”

The Outcome

Claude 3.5 impressed by accurately identifying mislabeled keys, correcting the namespace issues, and accounting for global styles and existing data objects. By leveraging AI, the team reduced manual debugging efforts and ensured consistent translations with minimal hassle.

Problem 2: Automating ESLint for Error Detection

The Challenge

Developers previously relied on manual ESLint validation, which often led to undetected errors accumulating over time. The objective was to automate ESLint validation so errors are caught early during project builds.

The AI Solution

Using Windsurf IDE, the team focused on configuring Webpack for automated ESLint checks. A simple prompt was submitted:

“Configure ESLint to make the project fail to build if errors are detected during startup or in development mode. Limit checks to the ‘src’ folder, exclude ‘autoGeneratedTranslations.js,’ add support for ‘.ts’ and ‘.tsx’ files, and move the ESLint cache to the root directory.”

The Outcome

Claude 3.5 efficiently handled the request, finding the required library, integrating it into the project, and completing the configuration seamlessly. The transition was smooth, and the AI-powered setup eliminated tedious manual work, allowing developers to focus on higher-value tasks.

Problem 3: Refactoring Components and Enhancing Styling

The Challenge

DocSpace’s styling relied on styled-components, a CSS-in-JS library. While functional, it impacted client-side performance, and not all components were covered with unit tests. The team needed to refactor components for better styling organization and performance while adding robust unit tests.

The AI Solution

The team initiated a complete overhaul for the FormWrapper component in three steps:

1. Adding Unit Tests:

Using the prompt:

“Create unit tests for FormWrapper using ‘utils/render-with-theme.’ Add data-testid for the main component and ensure compatibility with Jest-DOM.”

Claude promptly generated test cases tailored to the component's requirements.

2. Creating Component Stories:

To aid in visualization, developers utilized Storybook. The prompt read:

“Add new stories for FormWrapper to display different component states and variations.”

The AI delivered well-structured stories, enabling better collaboration and usage understanding.

3. Refactoring Styling:

Addressing performance concerns, styling was shifted from the styled-components library to SCSS modules. A detailed request specified:

“Rewrite StyledWrapper for FormWrapper to SCSS modules. Use mixins from shared/styles/_mixins.scss, support themes through CSS variables, and use classnames for combining SCSS class names with props.”

Claude delivered optimized SCSS modules, addressing media queries, themes, and organizational needs effectively.

The Outcome

The results were nothing short of remarkable. AI-powered refactoring not only improved overall system performance but also enhanced maintainability and readability.

The Takeaway

By integrating Windsurf IDE into their workflow, the DocSpace team achieved notable advantages:

Streamlined Processes: Routine tasks were automated, reducing the time spent on repetitive work.
Reduced Technical Debt: AI-driven suggestions helped with efficient refactoring and addressing long-standing issues.
Enhanced Team Productivity: Developers could focus more on innovative solutions, as the AI took over tedious tasks.
High-Quality Output: Suggestions from Windsurf consistently improved code reliability and performance.

Windsurf IDE proved to be more than a development tool. It became an indispensable partner, reshaping how the team approached challenges and inspiring confidence in their development capabilities.

Final Thoughts

The DocSpace project demonstrated how AI-driven development environments like Windsurf IDE can revolutionize the software development process. By blending cutting-edge neural networks with personalized developer support, Windsurf empowers teams to build better software faster, with fewer headaches. This synergy between developer ingenuity and AI innovation marks the next chapter in the evolution of programming tools. Each day with AI feels like a step closer to unlocking the full potential of human creativity.

Useful links

ONLYOFFICE DocSpace

API documentation

Get ONLYOFFICE DocSpace Developer

AI assistants in ONLYOFFICE

ONLYOFFICE DocSpace MCP Server: a quick-start guide for developers

Kseniya Fedoruk — Thu, 15 May 2025 13:55:46 +0000

The ONLYOFFICE DocSpace MCP Server simplifies AI-driven workflows by integrating large language models (LLMs) with external systems using the Model Context Protocol. It enhances efficiency, streamlines document management, and supports seamless AI integration for teams. Here you can find a quick guide to its installation and usage.

A brief intro

The ONLYOFFICE DocSpace MCP Server is a tool for managing the interaction between language models and external systems, specifically tailored for document management workflows within the ONLYOFFICE ecosystem.

It bridges the gap by standardizing communication through MCP, making complex tasks like file handling, user management, and workspace updates intuitive and reliable. By implementing tools that enhance collaboration, automation, and integration, it becomes an indispensable part of any AI-assisted setup.

Beyond streamlining this interaction, the MCP server ensures that integrations are highly flexible, allowing businesses to tailor solutions to their needs while tapping into the full potential of the ONLYOFFICE DocSpace features.

Benefits of the DocSpace MCP Server

Streamlined document workflows. Automate tasks like file uploading, folder creation, or document organization.
Collaboration achieved. Enhance team collaboration with robust tools that integrate LLMs into your document-sharing spaces.
Unified communication. Create consistent processes by bridging your AI-driven tools directly into document workflows without redundancies.
Security and compliance. Leverage authentication features and API keys to ensure secure interactions at every step of the process.

Installation

Setting up the ONLYOFFICE DocSpace MCP Server is a straightforward process that involves configuring it in a JSON file used by your clients. Here’s an example of adding the server:

{
 "mcpServers": {
  "onlyoffice-docspace": {
   "env": {
    "DOCSPACE_BASE_URL": "https://your-instance.onlyoffice.com",
    "DOCSPACE_API_KEY": "your-api-key"
   },
   "command": "npx",
   "args": ["--yes", "@onlyoffice/docspace-mcp"]
  }
 }
}

For an even more detailed installation walkthrough, check examples provided with configurations like Claude Desktop, so you can better adapt your workflows.

Configuration

The ONLYOFFICE DocSpace MCP Server relies solely on the environment variables for configuration. They dictate how it interacts with your instance and ensure flexibility for different use cases. Some of the key configuration variables include:

DOCSPACE_BASE_URL
The base URL where your DocSpace instance resides. This is critical for all API requests.
DOCSPACE_API_KEY
The unique API key needed for secure communication with DocSpace.
DOCSPACE_AUTH_TOKEN
Authentication token for the DocSpace API.

Check all variables

The variables provide the versatility to fine-tune the server to meet your organization’s needs. For example, if you’re focused on streamlining LLM integrations, you can explicitly configure tokens to avoid repeated manual authentication.

How to use the DocSpace MCP Server

ONLYOFFICE DocSpace MCP Server implements the Tools concept of the Model Context Protocol. These tools offer a predefined set of commands you can leverage to carry out specific actions on your documents and spaces. Below is a highlight of the tools available:

File management tools

files_create_folder: Quickly create folders to structure your space.
files_get_file_info: Retrieve specific metadata and info about a file.
files_upload_file: Upload new documents into DocSpace seamlessly.

Room management tools

files_create_room: Set up collaborative rooms tailored to specific projects.
files_set_room_security: Control user access for heightened security.

Maintenance and insights

portal_get_quota: Monitor how much storage is used and what’s available.
settings_get_time_zones: Adjust time zones to coordinate international teams.

With 29 tools available ranging from user management to file handling and data retrieval, the server can handle a variety of use cases.

For example, imagine your team needs to archive completed project folders after finishing a project. Using the files_archive_room tool, you can automate this process for any given space. Similarly, you can batch upload new project documents for your next campaign with just one command using files_upload_file.

Licensing

ONLYOFFICE DocSpace MCP Server is distributed under the Apache-2.0 license, which guarantees transparency and flexibility. Whether you aim to modify the server to better suit your needs or distribute it within your organization, the license provides the freedom to do so within an open-source framework.

Start building smarter workflows with ONLYOFFICE DocSpace MCP Server

The ability to integrate LLMs seamlessly into your document management workflows opens up countless possibilities for enhancing efficiency and collaboration while maintaining security and compliance. Whether you’re automating file archiving, setting up shared rooms, or uploading resources, this server enables teams to harness the power of AI and the cloud.

By leveraging ONLYOFFICE DocSpace MCP Server, businesses can take a giant leap toward creating a smarter space where both human and machine contributors thrive.

If you’re ready to elevate your document management with AI and tools that make collaboration a breeze, consider integrating ONLYOFFICE DocSpace MCP Server into your workflow. With its robust set of features and support for the Model Context Protocol, it’s an investment in productivity and efficiency you won’t regret.

Useful links

API roundup: latest updates for ONLYOFFICE Docs

Kseniya Fedoruk — Thu, 15 May 2025 09:10:06 +0000

We have rolled out a series of API updates for ONLYOFFICE Docs, aimed at enhancing compatibility, customization, and security. Whether you’re building custom workflows, enabling secure document collaboration, or integrating with advanced APIs, these enhancements offer boundless possibilities. Here’s a breakdown of the latest additions and improvements.

Extended file format support

The Docs API now supports additional file formats, offering broader compatibility, to ensure a seamless experience for users working with varied file types. Among those are Apple iWork and Hancom Office formats:

pages
key
numbers
hwp
hwpx

These formats can be specified using the fileType parameter, for example:

const config = {
  document: {
    fileType: "pages",
  },
};

const docEditor = new DocsAPI.DocEditor("placeholder", config);

Enhanced customization options

Developers now have more control over the editor’s behavior and appearance. Key updates include:

Hiding feature tips

The editorConfig.customization.features.featuresTips parameter allows enabling or disabling tooltips about the new features during the first editor load upon updating. Default value is true.

Display of spreadsheet scrollbars

Starting from version 8.3, it’s possible to define if the horizontal/vertical scroll is automatically displayed or hidden when the spreadsheet editor is loaded. Check editorConfig.customization.showHorizontalScroll and editorConfig.customization.showVerticalScroll to control these parameters.

Presentation slideshow background

Use the editorConfig.customization.slidePlayerBackground parameter to define the slideshow background color in HEX, RGB, or RGBA formats. For example, #ff0000, rgb(255, 0, 0), rgba(255, 0, 0, 0.5).

showHorizontalScroll: true,
showVerticalScroll: true,
slidePlayerBackground: "#000000",

Document heading colors

Customize heading styles in the document editor with the editorConfig.customization.wordHeadingsColor parameter, allowing HEX color specifications.

Mobile Info button

Toggle the display of the Document Info button for mobile editors using editorConfig.customization.mobile.info. Default value is false.

Pointer mode

Adjust the pointer mode (select _or _hand) in the presentation viewer using the editorConfig.customization.pointerMode parameter. Default value is select.

Compact toolbar for the viewer

The editorConfig.customization.compactToolbar parameter now supports the viewer mode, allowing switching between full and compact toolbars. Default value for view mode is true.

Improved security features

The Docs API introduces handling of password-protected files with the added events.onUserActionRequired event. The function is called when a user action is required to open a document in the following cases:

when the user needs to enter a password to open the protected document;
when the user needs to select an encoding for the TXT file;
when the user needs to select an encoding and a delimiter for the CSV file.

Here’s an example of how the event functions:

function onUserActionRequired() {
  console.log("Enter a password")
};
const config = {
  events: {
    onUserActionRequired,
  },
};
const docEditor = new DocsAPI.DocEditor("placeholder", config);

What else, you are now able to use the drop command to prohibit document editing for specific users:

{
  "c": "drop",
  "key": "Khirz6zTPdfd7",
  "users": ["6d5a81d0"]
}

The full Docs API changelog is available here.

Get the latest version of ONLYOFFICE Docs Developer: DOWNLOAD

New Office API methods

The Office API receives significant updates for better document management, namely:

Bookmarks
Content Controls
Sections
Autofilters
Selection
And more

These enhancements enable richer interactions and editing experiences. For a detailed breakdown of commands, consult the Office API changelog.

Plugins API updates

Several new methods and properties expand the capabilities of plugins:

Content retrieval

The GetSelectedContent method retrieves selected content in a specified format.

expression.GetSelectedContent(prop);

Error messages

The ShowError method enables plugins to display error or warning messages.

expression.ShowError(error, level);

Enhanced Content Control properties

New properties Shd (background shading) and Border enhance the ContentControlProperties object for better visual customization.

Panel activation

The isActivated parameter allows you to specify whether a created plugin panel is expanded (true) or collapsed (false) on load.

Check the full list of the plugin API updates.

Useful links

ONLYOFFICE DocSpace Developer: version 3.1 & API updates

Kseniya Fedoruk — Wed, 14 May 2025 15:34:05 +0000

ONLYOFFICE DocSpace Developer 3.1 is released with multiple feature updates and powerful API enhancements.

ONLYOFFICE DocSpace Developer 3.1

The latest release comes packed with powerful new features to boost productivity and collaboration of your end users. All updates

Key highlights include:

role-based form filling in Virtual Data Rooms for added security and streamlined workflows;
reusable room templates to save time;
improved guest management for seamless cooperation with external users;
enhanced file management with quick sharing of PDF forms, better version control, and smoother operations.

Get the latest version of ONLYOFFICE DocSpace Developer: DOWNLOAD

DocSpace API updates

The recent updates to the DocSpace API introduce powerful tools to simplify API interactions and enhance user management.

API Keys

A new endpoint allows you to create user API keys directly through API requests. This feature simplifies secure integration and user-specific control. Learn more

OAuth 2.0

The API now supports OAuth 2.0 authorization. This feature is essential for implementing more secure and scalable authentication flows across applications. Explore the OAuth 2.0 setup process

Webhook triggers

You can retrieve a full list of triggers for a webhook using the new method. These triggers provide actionable events to automate workflows and system integrations. Learn more about webhook integration

Plugins SDK samples

Streamline the plugin development process – create, code, build, and upload custom plugins to DocSpace using the newly added ready examples. Check samples