Developer Tools

Base64 Encode / Decode Encode text to Base64 or decode it back, with full UTF-8 support. Color Converter Convert colours between HEX, RGB and HSL with a live preview swatch. HTML Encode / Decode Escape text into HTML entities or decode entities back to plain characters. JSON Formatter Beautify or minify JSON in your browser with clear, exact error messages. JSON Validator Check whether text is valid JSON and see the exact error, type and size. JWT Decoder Decode a JSON Web Token to read its header and payload — no signature verification. Number Base Converter Convert integers between binary, octal, decimal, hex and any base from 2 to 36. Regex Tester Test a regular expression against sample text and inspect every match and capture group. SHA-256 Hash Generator Hash any text with SHA-256, SHA-1 or SHA-512 using the Web Crypto API. Unix Timestamp Converter Convert Unix timestamps to local and UTC dates and back, with a one-click Now button. URL Encode / Decode Percent-encode text for safe use in URLs, or decode it back to readable text. UUID Generator Generate one or many RFC 4122 version-4 UUIDs with a cryptographic random source.