Developer Tools
JSON formatters, encoders, regex testers, and more
JSON Formatter
Prettify, validate, and minify your JSON code instantly.
Color Palette Generator
Generate beautiful color palettes from a base color or image.
SQL Formatter
Format and beautify SQL queries with keyword case control, indent style, and compact/expanded modes.
Base64 Encoder/Decoder
Encode and decode text or files to/from Base64.
Color Picker
Pick colors and convert between HEX, RGB, and HSL.
CSS Gradient Generator
Create beautiful linear and radial CSS gradients with live preview.
Cron Expression Builder
Build cron expressions visually with human-readable descriptions, next execution times, and 13 common presets.
URL Encoder/Decoder
Encode and decode URLs for safe web transmission.
Markdown Editor Live
Live markdown editor with real-time preview, export to HTML and PDF.
API Tester
Test any HTTP API endpoint with full control over method, headers, params, body, and auth. Request history included.
Box Shadow Generator
Generate complex CSS box shadows with live visual preview.
Diff Checker
Compare two text blocks and highlight differences line by line.
JSON Validator
Validate JSON syntax and find errors instantly.
Markdown Table Generator
Build Markdown tables visually — add rows/columns, set alignment, preview rendered output, and import from CSV.
HTML Formatter
Beautify and format HTML code with proper indentation.
JWT Decoder
Decode and inspect JWT tokens without a secret.
HTML Previewer
Live HTML/CSS/JS sandbox with instant preview.
Hash Generator
Generate MD5, SHA1, SHA256 hashes for any input.
Flexbox Generator
Generate CSS Flexbox layouts visually with copy-paste code.
CSS Formatter
Format and minify CSS stylesheets instantly.
SQL Query Builder
Build SELECT, INSERT, UPDATE, DELETE queries visually without writing SQL.
API Response Formatter
Format and prettify JSON/XML API responses with syntax highlighting.
CSS Grid Generator
Build CSS Grid layouts with a visual editor and instant code output.
.gitignore Generator
Generate .gitignore files for any language, framework, or tool.
Regex Cheat Sheet
Interactive regex reference with examples and live tester.
Webhook Tester
Test webhooks by receiving HTTP requests and inspecting payloads.
Cron Expression Parser
Parse and validate cron expressions with human-readable schedule output.
JWT Generator
Generate and sign JWT tokens with custom payload and secret.
Lorem Image Generator
Generate placeholder images with custom size, color, and text.
Regex Generator
Generate common regular expressions from natural language descriptions.
UUID Validator
Validate UUID format and version (v1, v3, v4, v5) instantly.
Unix Permission Calculator
Calculate and convert Unix file permission numbers (chmod) visually.