Developer Tools
JSON Formatter & Validator
Format, validate, and minify JSON directly in your browser, with precise error locations and adjustable indentation.
Unix Timestamp Converter
Convert Unix timestamps to human-readable dates and back, with UTC and local time views for seconds and milliseconds.
Base64 Encoder & Decoder
Encode text or files to Base64 and decode Base64 back to text, entirely in your browser, with full Unicode and Base64URL support.
URL Encoder & Decoder
Encode and decode URLs or individual URL components in your browser, with correct Unicode handling and malformed input detection.
UUID Generator
Generate version 4 (random) or version 7 (time-ordered) UUIDs in bulk, entirely in your browser.
Regex Tester
Test regular expressions against sample text with live match highlighting, flags, and capture groups.
Text Diff Checker
Compare two blocks of text and clearly see every added, removed, and changed line.
JWT Decoder
Decode a JSON Web Token to view its header and payload and check its expiry status. Does not verify the signature.
Hash Generator
Generate SHA-1, SHA-256, SHA-384, and SHA-512 hashes from text, computed locally with the Web Crypto API.
JSON Diff Checker
Compare two JSON documents and clearly see every added, removed, and changed key or value.