Developer Tools
Format, encode, decode, hash and inspect developer data fast.
JSON Formatter & Validator
Format, prettify, compact, validate syntax errors, and inspect JSON with clean indentation.
Base64 Encoder / Decoder
Encode plaintext or decode Base64 strings safely with UTF-8 support.
URL Percent Encoder / Decoder
Safely encode special characters for query parameters or decode percent-encoded URLs.
HTML Entity Encoder / Decoder
Escape HTML tags and special entities (<, >, &, ") or unescape them.
Cryptographic Hash Generator
Generate SHA-256, SHA-512, SHA-384, and SHA-1 message digests with the browser Web Crypto API.
JWT Token Decoder
Decode JSON Web Tokens into Header, Payload, and expiration status without sending secret keys.
Regex Tester
Test regular expressions with flags, highlighted matches, capture groups and replacement preview. Runs safely with a time limit.
UUID / GUID Generator
Generate cryptographically random UUID v4 strings individually or in bulk.
CSS Minifier / Formatter
Compress stylesheet size by stripping comments and whitespace, or un-minify back to clean rules.
JavaScript Minifier
Minify JavaScript with Terser, with optional compression and name mangling, on your device.
XML Formatter
Pretty-print or minify XML and check that it is well-formed, on your device.
SQL Formatter
Format SQL queries for standard SQL, MySQL, PostgreSQL, SQLite and T-SQL with keyword casing options.