Developer Tools
Formatters, encoders, hashes and generators for everyday development.
JSON Formatter & Validator
Format, minify and validate JSON with clear error messages.
Base64 Encoder & Decoder
Encode text to Base64 or decode Base64 back to text, with full UTF-8 support.
UUID Generator
Generate random version 4 UUIDs in bulk.
Hash Generator (SHA)
Create SHA-1, SHA-256, SHA-384 and SHA-512 hashes from text.
URL Encoder & Decoder
Encode or decode text for safe use in URLs and query strings.
Regex Tester
Test JavaScript regular expressions with live match highlighting and groups.
JWT Decoder
Decode a JSON Web Token to read its header and payload locally.
Markdown Previewer
Write Markdown and see a live HTML preview side by side.
Text Diff Checker
Compare two texts line by line and see what was added or removed.
CSV ↔ JSON Converter
Convert CSV to JSON or JSON to CSV in your browser.
CSS, JS & HTML Minifier
Remove comments and extra whitespace from CSS, JavaScript or HTML to cut file size.
HTML Entity Encoder & Decoder
Escape special characters into HTML entities or turn entities back into text.