JSON formatter, Base64 encoder, UUID generator, regex tester, and more. All tools run in your browser - your code stays private.
All processing happens in your browser. Your code never leaves your device.
No server uploads means instant processing. Work at maximum speed.
Once loaded, our tools work without internet. Code anywhere.
Start using tools immediately. No signup, no email, no hassle.
Format, encode, and decode data in various formats
Generate unique identifiers, hashes, and more
Test, validate, and debug your code
Convert between formats and data types
Common questions about our free developer tools
Yes, all developer tools are completely free with no limitations. There are no hidden fees, watermarks, or usage caps. We believe quality developer tools should be accessible to everyone.
Absolutely. All tools use client-side processing, meaning your code and data never leave your browser. Nothing is uploaded to our servers. This makes it completely safe to use with sensitive code, API keys, or production data.
No installation required. All tools run directly in your web browser. They work on any modern browser (Chrome, Firefox, Safari, Edge) on any operating system.
Our JSON formatter is one of the best free options available. It offers instant formatting, validation with detailed error messages, syntax highlighting, minification, and 2/4 space indentation options. Plus, it is 100% private with client-side processing.
Use our Regex Tester tool. Paste your regex pattern and test string, and see matches highlighted in real-time. It shows capture groups, supports flags (g, i, m), and provides a quick reference for regex syntax.
Yes, our JWT Decoder lets you safely decode JSON Web Tokens. Since all processing happens in your browser, your tokens are never sent to any server. You can see the header, payload, and verify expiration times.
Our Hash Generator supports MD5, SHA-1, SHA-256, SHA-384, and SHA-512 algorithms. You can hash text input or files. The tool is useful for verifying file integrity or generating password hashes.
Yes, all tools are fully responsive and work on smartphones and tablets. The interface adapts to smaller screens while maintaining full functionality.
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