Free browser-based developer and utility tools. No data leaves your browser.
Developer Tools
Format, validate and minify JSON data
Encode or decode Base64 strings
Encode or decode URL components
Generate MD5, SHA-1, SHA-256 hashes
Decode and inspect JSON Web Tokens
Generate random UUIDs (v4)
Test regular expressions with live highlighting
Build and validate cron schedule expressions
Convert Unix timestamps to dates and back
Format, beautify and minify SQL queries
Convert between YAML, JSON and TOML formats
Generate a URL and inspect incoming HTTP requests
Text Tools
Write Markdown and see live HTML preview
Compare two texts and see differences
Convert between CSV and JSON formats
Generate placeholder text for designs
Generate fake names, emails, addresses for testing
Convert between camelCase, snake_case, kebab-case
Encode and decode HTML entities
Count words, characters, sentences, reading time
Encode strings to UTF-8, Unicode, Hex, Binary
Web & Design Tools
Minify or beautify HTML, CSS and JavaScript
Generate Apache .htaccess rules for redirects, security
Pick colors and convert HEX, RGB, HSL
Generate QR codes from text or URLs
Generate placeholder images with custom size and colors
File Tools
Convert images between PNG, JPEG, WebP
Resize and compress images in browser
Create and extract ZIP archives
Merge or split PDF files in browser
Network & Sysadmin Tools
Look up DNS records for any domain
Look up domain registration information
Check SSL/TLS certificate details
View HTTP response headers for any URL
Ping a host or trace the network route
Send HTTP requests and inspect responses
Scan open ports on a host
Calculate subnet mask, host range from CIDR
Convert between numeric and symbolic Unix permissions
Parse browser user agent strings
Security & Crypto Tools
Generate strong, random passwords
Encrypt and decrypt text with AES-256
Generate and verify 2FA one-time passwords
Sharing Tools
Share code snippets and text securely
Shorten long URLs for easy sharing
Share files up to 1 GB with a simple link