Free online utilities for developers. All tools run in your browser — your data stays private.
Format, validate, and beautify JSON
Generate random UUIDs (v4)
Generate strong, random passwords
Generate placeholder text
Encode and decode Base64
Encode and decode URLs
Decode and inspect JSON Web Tokens
Generate MD5, SHA-1, SHA-256 hashes
Count words, characters, sentences
Test and debug regular expressions
Compare two texts and see line-by-line differences
Copy-ready snippets for JS, regex, Git, APIs, and CSS
Convert Unix timestamps to dates
Convert between HEX, RGB, HSL