Do I need to install anything?

No. FreeDevKit runs entirely in your web browser. Just open the website and start using it.

Yes. All processing happens in your browser using JavaScript. Your data never leaves your device.

Can I use FreeDevKit on my phone?

Yes. FreeDevKit works on any device with a modern browser — iPhone, Android, iPad, desktop, or laptop.

FreeDevKit includes 47 tools across JSON, encoding, hashes, regex, CSS, SQL, code generation, Markdown, API, and test-data workflows.

Yes. Once the page is loaded, all tools work without an internet connection since everything runs locally in your browser.

No limits at all. Use the tools as many times as you want, with any amount of data. Everything runs on your device.

Step-by-step guides for every tool. Get started in seconds.

Select any tool from the navigation bar — JSON, encoding, hash, regex, diff, cron, CSS, tests, notepad, markdown, table, API, or fake data.

Type or paste your text, JSON, URL, or token into the input area.

See instant results — formatted JSON, hashes, regex matches, diffs, CSS code, generated tests, and more.

Click the copy button to copy the result to your clipboard. Done!

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