All Developer Tools
Complete collection of free online tools for developers and designers
📝Text & Data Tools
JSON Formatter
Format, validate and beautify JSON data instantly with syntax highlighting and error detection. Perfect for debugging APIs.
Markdown Previewer
Live markdown editor with real-time preview. Create and preview README files with GitHub Flavored Markdown support.
Base64 Converter
Encode and decode Base64 strings instantly. Convert text, images, and files to Base64 format for web development.
Hash Generator
Generate secure MD5, SHA-1, SHA-256, and SHA-512 hashes for password encryption and data integrity verification.
URL Encoder
Encode and decode URLs for safe transmission. Convert special characters to URL-safe format instantly.
Text Diff Checker
Compare two texts side-by-side with highlighted differences. Perfect for code reviews and document comparison.
JWT Decoder
Decode and inspect JWT tokens instantly. View header, payload, and signature for authentication debugging.
JWT Encoder
Create and sign JWT tokens with custom claims. Generate secure authentication tokens for your applications.
JSON ⇄ CSV Converter
Convert between JSON and CSV formats seamlessly. Import/export data for Excel, databases, and spreadsheets.
XML Formatter
Format, beautify, validate and minify XML data instantly. Perfect for debugging APIs, RSS feeds, and configuration files.
Curl ↔ Fetch Converter
Convert curl commands to JavaScript fetch() and fetch snippets back to curl. Ideal for API testing and frontend development.
🚀Developer Tools
Dockerfile Generator
Generate production-ready Dockerfiles instantly. Create optimized Docker configurations for any programming language or framework.
.env Generator & Validator
Create and validate environment variable files. Manage configuration securely with syntax validation and best practices.
.gitignore Generator
Generate custom .gitignore files for any project type. Pre-configured templates for popular languages and frameworks.
SLA Uptime Calculator
Calculate allowed downtime for any SLA percentage (99.9%, 99.99%). Plan infrastructure reliability and maintenance windows.
Database URL Generator
Construct secure database connection strings for PostgreSQL, MySQL, MongoDB, Redis, SQLite and SQL Server with auto-encoded credentials.
Cron Expression Generator
Generate and parse cron expressions visually. Create cron schedules, preview execution times, and convert cron syntax to plain English instantly.
⚡Code Tools
Code Formatter
Minify and beautify HTML, CSS, and JavaScript code. Optimize code for production or improve readability instantly.
SQL Formatter
Format and beautify SQL queries with proper indentation. Supports MySQL, PostgreSQL, SQL Server, Oracle and more.
Markdown to HTML
Convert Markdown to HTML with live preview. Perfect for GitHub README files, documentation, and blog posts.
JSON to TypeScript
Generate TypeScript interfaces from JSON data instantly. Perfect for API types and type-safe development.
Lorem Ipsum Generator
Generate Lorem Ipsum placeholder text for paragraphs, sentences, or words. Perfect for mockups and designs.
Regex Tester
Test and debug regular expressions in real-time. Validate patterns with syntax highlighting and match visualization.
🖼️Image Tools
Image Compressor
Reduce image file size without losing quality. Compress PNG, JPG, and WebP images up to 80% smaller for faster websites.
Image Converter
Convert between image formats instantly. Support for PNG, JPG, WebP, GIF, and more. Batch conversion available.
Image Resizer
Resize and crop images to exact dimensions. Maintain aspect ratio or create custom sizes for social media and web.
Image to Text Converter
Extract text from images using advanced OCR technology. Convert photos, screenshots, and scanned documents to editable text.
🎲Generator Tools
Password Generator
Generate strong, secure passwords with custom length and character options. Create cryptographically secure passwords instantly.
UUID Generator
Generate unique identifiers (UUID/GUID) for databases, APIs, and applications. Supports v1, v4, and v5 formats.
QR Code Generator
Create custom QR codes for URLs, text, WiFi, and contact info. Download as PNG or SVG with customizable colors.
🔄Converter Tools
Timestamp Converter
Convert Unix timestamps to human-readable dates and vice versa. Support for milliseconds, seconds, and multiple timezones.
Color Picker
Pick and convert colors between HEX, RGB, HSL, and CMYK formats. Visual color picker with palette generator.
API Request Converter
Convert API request code between Curl commands, Fetch API, and Axios formats instantly. Fully client-side and secure.
Need More Tools?
We're constantly adding new tools to help developers. If you have a suggestion, feel free to contact us or check our latest blog posts!