Browserling is a web-based cross-browser testing tool that allows you to test your website across different browsers and operating systems.
Starting at $19 per month
Best FreeFormatter Alternatives ranked by AI · updated Aug 2026
FreeFormatter is a browser-based collection of formatters, validators, encoders, decoders, and generators for developers. It is particularly useful for XML, JSON, SQL, HTML, CSS, and Java-related data preparation.
Top 6 FreeFormatter alternatives
Postman is a collaboration platform for API development used by millions of developers.
Free with paid plans available
JSONLint is a web-based tool to validate, format, and minify JSON data.
DevTools360 is a browser-based collection of utilities for developers, including formatting, encoding, validation, conversion, and text-processing tools. It is aimed at developers...
Pros
- Provides many common developer utilities from one browser-based interface
- Useful for quick formatting, encoding, conversion, and validation tasks
- No desktop installation is required
Cons
- Less powerful for repeatable workflows than CyberChef or command-line tools
- Browser-based tools may offer fewer integrations than desktop developer tool suites
- Feature depth and documentation can vary between utilities
WTOOLS is a free collection of browser-based utilities for developers, administrators, and technical users. It includes tools for formatting, encoding, conversion, hashing,...
Pros
- Broad selection of small developer and system utilities
- Works directly in a browser without account creation
- Includes useful encoding, hashing, formatting, and conversion tools
Cons
- Interface and tool organization are less polished than dedicated alternatives
- Some tools provide less documentation and configuration depth
- Browser-based processing may be unsuitable for sensitive data
DevToys is a free, open-source Windows utility collection that includes JSON formatting and validation tools. It targets developers who want multiple offline...
Pros
- Provides offline JSON tools alongside encoders, converters, and generators
- Avoids sending sensitive JSON to a web service
- Free and open source for Windows users
Cons
- Windows-focused, unlike browser-based Pretty JSON
- Less specialized for JSON inspection than dedicated web tools
- Not available as a native equivalent across all desktop platforms
Free, open source
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