Free online utilities for developers. All tools run in your browser — your data stays private.
Format, validate, and beautify JSON
Validate YAML syntax and preview parsed JSON
Convert text to camelCase, snake_case, kebab-case, and more
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