Developer Hub
Tools built for builders
Formatters, encoders, validators and generators that run privately in your browser.
JSON Formatter
Format, validate, minify and beautify JSON instantly in your browser.
Use Tool →JSON Validator
Check whether a JSON string is valid and see clear error messages.
Use Tool →Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 back to text.
Use Tool →URL Encoder / Decoder
Encode or decode URL query strings and path segments safely.
Use Tool →UUID Generator
Generate UUID v4 identifiers for apps, databases, and APIs.
Use Tool →JWT Decoder
Decode JWT header and payload locally. Does not verify signatures.
Use Tool →Regex Tester
Test regular expressions against sample text with live match highlights.
Use Tool →Hash Generator
Generate SHA-256, SHA-384, or SHA-512 hashes from text in the browser.
Use Tool →Timestamp Converter
Convert Unix timestamps to human dates and back.
Use Tool →Color Converter
Convert between HEX, RGB, and HSL color formats.
Use Tool →Markdown Preview
Write Markdown and preview rendered HTML side by side.
Use Tool →HTML Formatter
Beautify HTML indentation for readability.
Use Tool →CSS Formatter
Beautify or minify CSS for development and delivery.
Use Tool →JavaScript Formatter
Indent JavaScript for readability (best-effort beautify).
Use Tool →