Tools for Developer
JSON formatting, regex testing, hashing, encoding — the everyday developer utilities that don't deserve their own npm install.
JSON formatting, regex testing, hashing, and encoding are the kind of small, frequent tasks that come up constantly during real development work but are individually too minor to justify a dedicated npm package or app -- this collection exists specifically for that gap, the utilities reached for many times a day without much thought.
JSON / YAML Formatter
Format, validate, and beautify JSON & YAML
Regex Tester
Test and debug regular expressions
Base64 Encode / Decode
Encode or decode Base64 strings
Hash Generator
Generate MD5, SHA-1, SHA-256 hashes
JWT Decoder
Decode and inspect JSON Web Tokens
UUID Generator
Generate random UUIDs and unique keys
Diff Checker
Compare two blocks of text or code and highlight differences
Binary / Hex / ASCII Converter
Convert text between binary, hexadecimal, and decimal ASCII codes
HTML to PDF
Convert HTML content into a PDF document
Unix Timestamp Converter
Convert between Unix timestamps and human-readable dates
Cron Expression Builder
Build and understand cron expressions in plain English
HTTP Status Code Reference
Look up what any HTTP status code means
CSS & JS Minifier
Minify CSS and JavaScript to reduce file size
User-Agent Parser
Parse a user-agent string into browser, OS, and device info
URL Encoder / Decoder
Encode or decode URLs and query strings
User Manual Writer
Build a structured, printable user manual with your own sections and content