If you work with Plone — whether on the classic stack or the modern Volto frontend — there are two ONLYOFFICE releases worth your attention. The add-on for Plone has been updated to v4.1.0, and a first stable release of the ONLYOFFICE add-on for Volto is now available. Together, they bring document editing, collaboration, and PDF form handling directly into the Plone environment, without pulling users out of the CMS.
Here's a practical breakdown of what's new and what it means for your stack.
ONLYOFFICE add-on v4.1.0 for Plone
The updated Plone add-on introduces fillable PDF form support, allowing teams to create and manage structured forms directly within Plone. Users can build customizable PDF forms with text fields, checkboxes, dropdown lists, radio buttons, signature fields, and more, thus enabling more efficient data collection without leaving their content platform.
The update also adds compatibility with Plone 6.1, expands localization support with 21 new language templates, and improves JWT lifetime configuration for more flexible deployment.
ONLYOFFICE add-on v1.0.0 for Volto
The newly released ONLYOFFICE add-on for Volto brings the same document-centric capabilities to organizations using Plone's modern interface. You can create, view, edit, and review office documents directly within Volto (including DOCX, XLSX, and PPTX files), with no need to switch between tools. The add-on also supports PDF editing and form-filling, file conversion to multiple formats, and quick setup.
Besides, it provides built-in demo server connection, making it straightforward to explore the integration without a dedicated ONLYOFFICE instance.
Why this matters
Both add-ons are free and open-source, lowering the barrier for Plone-based organizations looking to consolidate their document workflows. The expanded language templates included in v4.1.0 improve accessibility for international and multilingual teams, while compatibility improvements across both releases reduce friction in day-to-day collaborative work.
Organizations using Plone – whether on the classic interface or the Volto frontend – can get started with either add-on through the npm Registry, PyPi.org, or GitHub, with the detailed configuration guides available.
Useful links
- Plone add-on on GitHub | PyPI
- Volto add-on on GitHub | npm
- ONLYOFFICE Docs
- All ONLYOFFICE integrations


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