44 tools
Format, validate & beautify JSON
Decode and inspect JWT tokens
Build and understand cron expressions visually
Convert between Unix timestamps and dates
Encode and decode Unicode characters
Encode and decode Base64 text and files
Encode and decode URLs and query strings
Generate SHA-1, SHA-256, SHA-384 & SHA-512 hashes
Write Markdown and preview rendered HTML live
Test and debug regular expressions with highlighting
Convert between YAML and JSON formats
Convert between CSV and JSON formats
Build UTM tracking links for marketing campaigns
Preview how your links appear on social media
Generate SEO meta tags for your website
Generate UUID v4 and ULID identifiers instantly
Generate favicons in all sizes from any image
Convert JSON to TypeScript interfaces instantly
Encode & decode HTML entities and special characters
Look up IP address location and details
Minify HTML, CSS & JavaScript code instantly
Format and beautify HTML, CSS & JavaScript code
Format and beautify SQL queries with proper indentation
Convert text to URL-friendly slugs
Quick reference for all HTTP status codes
Generate secure password hashes with salt
Parse and analyze browser user-agent strings
Convert Markdown text to HTML source code
Encrypt and decrypt text with AES encryption
Generate RSA public/private key pairs
Convert numbers between binary, octal, decimal & hex
Build and encode JWT tokens from header & payload
Convert between TOML and JSON formats
Convert between text and binary representation
Calculate Unix file permission values
Calculate IP subnet ranges, masks and CIDR notation
Find and copy JSON paths interactively
Count tokens and estimate API costs for GPT, Claude & Gemini
Generate valid test credit card numbers
Convert internationalized domain names to Punycode
Compare two JSON objects and visualize differences
Edit CSV files in a spreadsheet interface with export
Browse and copy common Excel formulas with examples
Write and preview LaTeX mathematical expressions