Developer Tools
Explore our curated collection of free, instant developer calculators and converters. All computations execute client-side for maximum speed and privacy.
JSON Formatter & Validator
DeveloperFormat, beautify, and validate JSON data
Base64 Encoder & Decoder
DeveloperConvert text to and from Base64 format
URL Encoder & Decoder
DeveloperEncode or decode percent-escaped URL strings
Hash Generator
DeveloperCalculate MD5, SHA-1, and SHA-256 digests
UUID Generator
DeveloperGenerate random RFC4122 Version 4 UUIDs
Lorem Ipsum Generator
DeveloperGenerate dummy placeholder text
HTML Entity Converter
DeveloperEncode characters to HTML entities or decode them
Markdown to HTML Converter
DeveloperCompile markdown syntax into clean HTML
Slug Generator
DeveloperCreate SEO-friendly URL slugs
Markdown Editor
DeveloperWrite and preview Markdown
JWT Decoder
DeveloperDecode JSON Web Tokens
Regex Tester & Debugger
DeveloperTest and debug JavaScript regular expressions live
HTML Minifier & Beautifier
DeveloperMinify HTML code for production or format it cleanly
Base64 Image Converter
DeveloperConvert images to Base64 data URIs and back