JSON Formatter
Format, validate, and minify JSON instantly
Base64 Encoder
Encode or decode Base64 strings
URL Encoder
Encode or decode URLs instantly
Markdown Preview
Write Markdown with live preview
JWT Token Generator
Generate JWT tokens with custom payload and secret
JWT Decoder
Decode and inspect JWT tokens without verification
JSON Validator
Validate JSON syntax with detailed error messages
Regex Tester
Test regular expressions with live matching and highlighting
Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-512 hashes
Cron Expression Generator
Build and explain cron schedule expressions
CSS Minifier
Minify CSS code to reduce file size
HTML Encoder
Encode/decode HTML entities and special characters
Text Diff Checker
Compare two texts and highlight differences
Unix Timestamp Converter
Convert between Unix timestamps and human dates
UUID Generator
Generate random UUIDs (v4) instantly
SQL Formatter
Format and beautify SQL queries
JSON to CSV Converter
Convert JSON data to CSV format
Chmod Calculator
Calculate Linux file permissions
XML Formatter
Format and beautify XML code
YAML Formatter
Format and validate YAML code
CSV to JSON Converter
Convert CSV data to JSON format
HTML to Markdown
Convert HTML code to Markdown syntax
JavaScript Minifier
Minify JavaScript code to reduce file size
Color Code Converter
Convert between HEX, RGB, HSL, CMYK color formats
Unix Permission Converter
Convert between octal and symbolic file permissions
HTTP Status Code Reference
Complete list of HTTP status codes with explanations
JSON Path Finder
Find paths to values in JSON data
API Request Tester
Send GET/POST requests and see responses
Code Beautifier
Beautify HTML, CSS, and JavaScript code
Code Diff Viewer
Compare two code snippets with syntax highlighting
Developer Tools
JSON formatter, regex tester, hash generator, JWT tools, and more for developers. All tools are free, work in your browser, and require no sign-up.