Developers often need small utilities during daily work.
Sometimes you just need to format XML, convert CSV to JSON, decode a JWT, test a regex, compare two text blocks, parse a cron expression, minify HTML or JavaScript, or generate a quick secret key.
These tasks are small, but they can interrupt your workflow if you have to search for a different tool every time.
Extractly has a Developer Tools section with multiple browser-based utilities for quick development tasks. I went through the section and picked 16 tools that are useful to bookmark.
Developer tools:
Developer tools - Extractly | Extractly
Decode JWTs, test regex patterns, compare text, parse cron expressions, generate secrets, format JSON, convert CSV/XML, and minify HTML or JavaScript snippets.
extractly.vip
1. JSON Key Sorter
Sort JSON object keys alphabetically for cleaner diffs and easier review.
Useful when you want a stable JSON structure before committing, comparing, or sharing configuration data.
2. CSV to JSON Converter
Convert CSV rows into formatted JSON objects locally.
Useful when working with exports, spreadsheets, mock data, or quick API payload examples.
3. JSON to CSV Converter
Convert JSON objects or arrays into CSV.
Useful when you need to move structured data into a spreadsheet or share it with non-technical users.
4. XML Formatter
Format compact XML with readable indentation.
Useful for config files, API responses, feeds, and XML snippets that are hard to read in one line.
5. XML Validator
Check whether XML tags appear balanced and properly nested.
Useful before sending XML to an API or debugging a broken XML document.
6. JWT Decoder
Decode a JWT header and payload locally without verifying or sending the token anywhere.
Useful when debugging authentication flows, inspecting claims, or checking token expiry.
7. Regex Tester
Test a regular expression against sample text and inspect matches.
Useful when writing validation rules, search patterns, filters, or text extraction logic.
8. Text Diff Checker
Compare two text blocks line by line and summarize added or removed lines.
Useful for checking config changes, snippets, logs, or generated output.
9. Cron Expression Parser
Parse a five-field cron expression into minute, hour, day, month, and weekday fields.
Useful when checking scheduled jobs, deployment tasks, background workers, or automation rules.
10. HTML Minifier
Remove comments and extra spacing from HTML snippets.
Useful for quick cleanup before embedding or testing small HTML blocks.
11. JavaScript Minifier
Remove comments and extra whitespace from small JavaScript snippets.
Useful for quick testing, embeds, and lightweight script cleanup.
12. Secret Key Generator
Generate cryptographically secure Base64 or URL-safe secrets locally in the browser.
Useful for app secrets, session keys, test credentials, and internal tooling.
13. Password Generator
Generate strong passwords with adjustable length, numbers, symbols, and readable character options.
Useful when creating temporary accounts, test users, or secure internal passwords.
14. API Token Generator
Create URL-safe bearer tokens with optional prefixes.
Useful for development, testing, internal tools, and mock authentication flows.
15. Random Hex Generator
Generate secure random hexadecimal strings for nonces, salts, IDs, and configuration values.
Useful when you need quick random values during development.
16. .env Secret Generator
Generate ready-to-copy environment variable lines for app secrets and session keys.
Useful when setting up a new project, local environment, or test configuration.
Final thoughts
Small developer tools do not need to be complicated.
For quick formatting, conversion, validation, token inspection, diff checking, and secret generation, browser-based utilities can save time without opening a full IDE plugin or installing another package.
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