Developer Utilities
Simple, fast and free online tools for developers, designers and everyday tasks.
All Tools
Choose a tool to get started.
JSON Formatter
Format, validate and beautify JSON data online.
SQL Formatter
Format and beautify SQL queries with clean indentation and readable structure.
HTML Formatter
Format and beautify HTML code with clean indentation and readable structure.
XML Formatter
Format and beautify XML code with clean indentation and readable structure.
Markdown Preview
Write Markdown and preview the formatted result instantly.
Hex to RGB Converter
Convert HEX colors to RGB and HSL instantly.
PX to REM Converter
Convert pixels to REM and EM for responsive CSS.
Color Converter
Convert colors between HEX, RGB, HSL and HSV with a live color preview.
JSON ↔ CSV Converter
Convert JSON data to CSV and CSV data to JSON online.
YAML ↔ JSON Converter
Convert YAML to JSON and JSON to YAML quickly and safely.
Number Base Converter
Convert numbers between binary, octal, decimal and hexadecimal.
Timestamp Converter
Convert Unix timestamps to dates and dates to Unix timestamps.
JSON → TypeScript
Convert JSON data into TypeScript interfaces or type definitions.
Base64 Encoder
Encode and decode text using Base64.
URL Encoder / Decoder
Encode or decode URL text safely and instantly.
HTML Entity Encoder / Decoder
Encode or decode HTML entities safely and instantly.
JWT Decoder
Decode JWT tokens and inspect their header and payload.
Character & Word Counter
Count characters, Thai words, English words, numbers and lines.
Case Converter
Convert text between uppercase, lowercase, title case, camelCase and more.
Clean Text
Remove extra spaces and empty lines from text.
Remove Duplicate Lines
Remove duplicate lines from text while keeping the original order.
Sort Lines
Sort lines alphabetically, numerically or by text length.
Lorem Ipsum Generator
Generate placeholder text for websites, designs and UI layouts.
Regex Tester
Test regular expressions against text and inspect matching results.
JSON Diff
Compare two JSON objects and find added, removed and changed values.
Text Diff
Compare two text blocks and find added, removed and changed lines.
UUID Generator
Generate random UUIDs online quickly and securely.
Password Generator
Generate random passwords with customizable length and character types.
Hash Generator
Generate SHA-1, SHA-256 and SHA-512 hashes from text.
QR Code Generator
Generate QR codes from URLs, text and other information instantly.
Cron Expression Generator
Create cron expressions for recurring tasks without memorizing cron syntax.
CSS Gradient Generator
Create beautiful CSS gradients and copy the generated CSS instantly.