Dev tools
JSON, regex, base64, hashes
JSON Formatter
Format, validate and minify JSON online
JWT Decoder
Decode JWT token header and payload
Regex Tester
Test regular expressions with flags and live match highlighting
Timestamp Converter
Convert between Unix timestamp and human-readable date
UUID Generator
v1, v4 or v7 with bulk export
ASCII Table
Complete ASCII reference table (0-127)
Base64 Encode / Decode
Two-way encoding and decoding
Binary Translator
Text ↔ UTF-8 binary
Color Picker
Visual + HEX, RGB, HSL, oklch
Cron Expression Builder
Build cron expressions with presets and natural-language description
CSS Minifier
Reduce CSS size by removing whitespace and comments
CSV to JSON
Convert CSV to JSON array
Diff Checker
Compare two texts and see differences by char, word or line
Hash Generator
MD5, SHA-1, SHA-256, SHA-512
Hex Translator
Text ↔ UTF-8 hexadecimal
HTML Escape / Unescape
Encode and decode HTML entities
JS Minifier
Basic JavaScript minification (strips comments and whitespace)
JSON to CSV
Convert a JSON array to CSV
Markdown Preview
Markdown editor with live preview and XSS sanitization
Number Base Converter
Convert between binary, octal, decimal and hexadecimal
RGB ↔ HEX Converter
Convert between RGB and HEX bidirectionally
URL Encode / Decode
Percent-encode strings