Developer Tools
A variety of tools for web development
Encoding/Decoding
Formatting
HTML Encoder/Decoder
Encode or decode HTML special characters to HTML entities.
CSS Minifier
Minify or beautify CSS code.
JS Minifier
Minify or beautify JavaScript code.
SQL Formatter
Format or minify SQL queries.
JSON Formatter
Free online tool to beautify, minify, and validate JSON data.
JSON/YAML Converter
Convert between JSON and YAML formats bidirectionally.
CSV/JSON Converter
Convert between CSV and JSON.
Markdown Preview
Preview Markdown as HTML in real-time.
Generators
Lorem Ipsum Generator
Generate dummy text in English and Korean.
Color Palette Generator
Generate a harmonious 5-color palette.
Hash Generator
Generate MD5, SHA-1, and SHA-256 hashes.
UUID Generator
Generate UUID v1 (time-based) or v4 (random).
Password Generator
Generate secure random passwords.
QR Code Generator
Convert text/URL to QR code.
CRON Expression Generator
Description
Gradient Generator
Generate and preview CSS linear and radial gradients.
Slug Generator
Generate URL-friendly slugs.
Developer Tools
RegEx Tester
Test regular expressions and view match results.
JWT Decoder
Decode and analyze JWT tokens.
Date/Time Converter
Convert date/time to various formats.
Special Characters & HTML Entities
Common special characters and HTML Entities.
String Case Converter
Convert strings to various cases.
Diff Checker
Compare differences between two texts.
Number Base Converter
Convert between binary, octal, decimal, and hexadecimal.
API Tester
Test REST API requests.