💻 Developer Tools
22 free developer tools tools. No sign-up. Works on any device.
Available now
Random Password Generator
Generate cryptographically secure random passwords with adjustable length, character classes, and ambiguous-character exclusion.
Regex Tester
Test regular expressions with live match highlighting.
Cron Expression Builder
Build and decode cron expressions with next-run times.
JSON Formatter
Format, validate, and minify JSON instantly.
Text Diff Tool
Compare two texts and highlight the differences.
JWT Decoder
Decode and inspect JSON Web Tokens instantly.
Unix Timestamp Converter
Convert Unix timestamps to human dates and back.
UUID Generator
Generate random UUID v4 identifiers instantly.
Hash Generator
Generate SHA-1, SHA-256, SHA-384, and SHA-512 hashes.
Text to Binary Converter
Convert text to binary, hex, or decimal and back.
Resistor Colour Code
Decode 4-band and 5-band resistor colour codes.
HTML Minifier
Minify HTML by removing whitespace, comments, and redundant attributes.
LED Resistor Calculator
Correct series resistor value for any LED circuit.
CSS Minifier
Minify CSS files by removing whitespace, comments, and redundant code.
Invoice Number Generator
Generate sequential invoice numbers with custom prefix and padding.
JavaScript Minifier
Minify JavaScript files by removing whitespace, comments, and shortening variable names.
Contrast Ratio Checker
WCAG contrast ratio for any text and background colour.
HTTP Status Code Reference
http status code reference.
Colour Palette Generator
Generate harmonious colour palettes from any base colour.
Cron Expression Generator
cron expression generator.
MD5 Hash Generator
Generate MD5 hash values for any text input.
SHA-256 Hash Generator
Generate SHA-256 hashes for any text or file.