Developer Toolbox
Fast, free, client-side tools for developers
Base64
Encode and decode Base64
URL Encoder
Encode and decode URLs
HTML Encoder
Encode and decode HTML entities
JSON Formatter
Format, validate and minify JSON
YAML ↔ JSON
Convert between YAML and JSON formats
Diff Viewer
Compare two text blocks and highlight differences
Case Converter
Convert text between camelCase, snake_case, kebab-case and more
SQL Formatter
Format and highlight SQL queries with dialect-specific options.
CSV ↔ JSON
Convert between CSV and JSON with table preview
Word Counter
Count words, characters, lines and paragraphs
JSON to TypeScript
Generate TypeScript interfaces from JSON
JSON Schema Generator
Generate a JSON Schema from sample JSON
HTML Formatter
Format, beautify and minify HTML
CSS Formatter
Format, beautify and minify CSS
JavaScript Formatter
Beautify and minify JavaScript
UUID Generator
Generate UUID v4 and ULID
Password Generator
Generate secure passwords with custom options
Hash Generator
Generate MD5, SHA-1, SHA-256 hashes
JWT Decoder
Decode JWT tokens - header, payload, expiry
CSS Box Shadow Generator
Generate box-shadow CSS with live preview and presets
CSS Gradient Generator
Generate CSS gradients with live preview, stop editor, and presets
CSS Border Generator
Generate CSS borders with live preview, per-side control, and presets
Color Converter
Convert HEX, RGB, HSL colors
px to rem Converter
Convert px, rem and em with a custom base font size
Regex Tester
Test regular expressions with live matching
Cron Parser
Explain cron expressions and show next run times
cURL Builder
Parse and build cURL commands
Timestamp Converter
Convert Unix timestamps to dates
Base Converter
Convert between binary, octal, decimal, hexadecimal