Dev Tools

Developer Tools

Format, encode, decode, and inspect data without leaving the browser.

No uploads

Client-side processing

Common tasks

Start with practical workflows users run most in this category.

Validate JSON API responses

Beautify and inspect payload structure instantly.

Inspect authentication tokens

Decode JWT headers and payload claims quickly.

Beautify, minify, and validate JSON data instantly.

Encode or decode text and files using Base64 encoding.

Generate MD5, SHA-1, and SHA-256 hashes for any input.

Decode and inspect JWT token header and payload fields.

Test regular expressions with live match highlighting.

Convert colors between HEX, RGB, HSL, and OKLCH formats.

How to choose the right tool

Use JSON Formatter first to make payloads readable before debugging.
Use Regex Tester to validate field rules against sample data.
Use Hash Generator for quick checksum verification in diagnostics.

Privacy and safety

Tokens, payloads, and secrets remain in your browser context with no backend transmission.

Category FAQs

Can I decode JWTs safely?

Yes. JWT decoding happens locally, so tokens are not sent to a server.

Can I test regex against large text snippets?

Yes. Paste sample text into Regex Tester to preview live matches.