Developer Tools

Format, validate, and minify JSON data with syntax highlighting

Encode text to Base64 and decode Base64 strings

Encode and decode URL components and query strings

Generate random UUID v4 identifiers

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text

Test and debug regular expressions with match highlighting

Decode and inspect JWT token header and payload

Beautify and format HTML code with proper indentation

Minify CSS code by removing whitespace and comments

Minify JavaScript code to reduce file size

Format and beautify SQL queries with proper indentation

Format and validate XML documents with syntax highlighting

Convert YAML to JSON and JSON to YAML format

Live preview of Markdown with syntax highlighting

Compare two texts and highlight differences side by side

Build and validate cron expressions with human-readable descriptions

Convert colors between HEX, RGB, HSL, and other formats

Convert CSV with headers to JSON objects, or arrays of objects back to CSV

Turn a cURL command into JavaScript fetch() with method, headers, and body

Build a full URL with query parameters; values are encoded for safe sharing

Convert Unix timestamps to human-readable dates and times in multiple formats

Convert numbers between binary, octal, decimal, and hexadecimal bases

Generate complementary, analogous, triadic, and monochromatic color palettes from any base color

Create beautiful linear and radial CSS gradients with a live preview

Parse and understand cron expressions with human-readable descriptions and next run times

Parse and analyze HTTP response headers with descriptions and security insights

Generate Apache .htaccess rules for HTTPS redirects, caching, GZIP, and security

Test and validate robots.txt rules to see which URLs are allowed or blocked for crawlers

Convert CSV data into a formatted Markdown table with alignment options

Generate .env and .env.example files visually with templates for Node.js, Next.js, and Vite projects

Convert any JSON object to a Zod schema with smart type inference for email, URL, datetime, and more

Build multi-layer CSS box shadows visually with live preview — copy the CSS with one click

Generate .gitignore files for any tech stack — Node, Python, React, Go, Java, and 30+ more

Check WCAG 2.1 AA/AAA color contrast ratios for accessible web design

Generate a professional GitHub README.md with badges, features, installation, usage, and license sections

Convert JSON arrays of objects to CSV format with custom separators and download

Validate JSON data against a JSON Schema with detailed error reporting

Encode special characters to HTML entities and decode HTML entities back to text

Paste JSON and instantly get TypeScript interfaces or type aliases with nested types

Convert vanilla CSS to Tailwind utility classes and Tailwind classes back to CSS

Paste JSON and click any value to get its JSONPath in bracket or dot notation

Build and send HTTP requests visually with headers, query params, body, and auto-generated cURL/fetch code

Generate Nginx server blocks with SSL, reverse proxy, gzip, security headers, CORS, and rate limiting

Build docker-compose.yml visually with pre-built templates for PostgreSQL, Redis, MongoDB, Nginx, and more

Calculate Unix file permissions in octal, symbolic, and command format with an interactive grid

Optimize and minify SVG files by removing comments, metadata, editor attributes, and unnecessary whitespace

Generate signed JSON Web Tokens (JWT) with HS256 using the WebCrypto API, right in your browser