Developer Tools
Browse free online Developer Tools on AI Super Tools — fast, private, no installation, available in 11 languages.
Free tools
FreeJSON Formatter
Format, validate, minify and sort JSON — 100% in your browser
Base64 Encode / Decode
UTF-8 safe Base64 with URL-safe variant and file support
UUID Generator
Bulk UUID v4 & time-ordered v7 (RFC 9562), client-side
Hash Generator
MD5, SHA-1, SHA-256, SHA-512 & CRC32 with HMAC and checksum verification
JWT Decoder & Verifier
Decode JSON Web Tokens and verify HS/RS/ES/PS signatures — fully in your browser
Unix Timestamp Converter
Convert epoch time to a date and back — seconds, millis, micros & nanos
Regex Tester
Test regular expressions live with match highlighting, groups and replace
Random Address Generator
Plausible test addresses for 50+ countries, in each one's own language — for QA, demos and form testing
XML Formatter
Pretty-print, minify, and check well-formedness of XML
YAML Formatter
Reformat YAML with consistent indentation, plus a validity/tabs check
SQL Formatter
Pretty-print or minify a SQL query
HTML Beautifier
Reindent nested markup, or minify
CSS Beautifier
Reindent rules with one declaration per line, or minify
JS Beautifier
Reindent braces/statements, or safely minify