FreeDevToolsby WhiteCoder
Free online developer tools

Developer tools that keep your workflow moving.

Format JSON, decode JWTs, generate CSS, convert data, build SEO tags and complete everyday web tasks from one fast, private workspace.

Browse 28 free tools Create free workspace
Browser-first No forced signup API available
Find a free tool Ready
JSON FormatterFree Data tool Base64 StudioFree Security tool JWT DecoderFree Security tool Hash GeneratorFree Security tool Timestamp ConverterFree Data tool
Local processing where supportedPrivate by default
28Free tools
6Categories
LocalDevice Vault
RESTDeveloper API
Browse by category

Find the right tool faster.

Search the full directory or open a category for code, data, design, security, backend and SEO work.

Backend tools1Code tools6Data tools5Design tools10SEO tools3Security tools3
Popular utilities

Free tools developers use every day.

View all tools
JSON FormatterFormat, minify and validate JSON instantly.FreeBase64 StudioEncode or decode text and files with Base64.FreeJWT DecoderInspect JWT header, payload and expiry locally.FreeHash GeneratorGenerate MD5, SHA and bcrypt hashes.FreeTimestamp ConverterConvert Unix timestamps and readable dates.FreeCode MinifierMinify HTML, CSS and JavaScript.FreeText Diff CheckerCompare two texts line by line.FreeCSS GradientBuild linear and radial CSS gradients visually.Free
Privacy-first tools

Large tool data is not stored on the server.

Normal inputs and outputs stay in the browser. Device Vault saves remain on the current device, while cloud snippets have a strict small-file limit.

Read the privacy policy
FreeDevTools API

Use selected utilities in your own workflow.

Create an API key, review usage and call supported operations from PHP, JavaScript or another HTTP client.

View API documentation
Common questions

Free developer tools, without the friction.

Are the developer tools free to use?

Yes. Core tools are free and can be opened without creating an account.

Does FreeDevTools upload my tool data?

Supported tool inputs and outputs are processed in the browser whenever possible. Large tool data is not automatically saved to the hosting account.

Can I use FreeDevTools on a phone?

Yes. The tools directory and individual workspaces are responsive and use a mobile application-style layout.

Built by WhiteCoder

Choose a free tool and start working.

No account is required for the core browser tools.

Explore all tools