Boost your development workflow with fast, browser-based tools for formatting, debugging, converting, and testing code.
Whether you're a frontend developer, backend engineer, or student learning programming, these tools help you save time and improve productivity without installing any software.
✔ No signup required
✔ Works in your browser
✔ Fast & lightweight tools
All tools run locally in your browser to keep your data private and secure.
Free developer tools for everyday use - No downloads, no registration
Convert between binary, hex, octal, and decimal number systems
Test regular expressions with match highlighting and common patterns
Validate JSON syntax with error detection and location highlighting
Encode and decode URLs with component and full URL support
Decode JWT tokens to view header and payload information
Minify or beautify JavaScript, HTML, and CSS in one tool
Generate and parse cron expressions with human-readable descriptions
Parse .env files and export as JSON
Convert curl commands to JavaScript fetch() code
Build SELECT queries visually
Generate JSON Schema from sample JSON
Generate mock API response configs
Convert Unix timestamps to dates and dates to timestamps
Format and beautify HTML code with indentation and minification
Format CSS code with proper indentation and minification
Format and validate YAML config files with clean indentation
Format TOML config files like Cargo.toml and pyproject.toml
Beautify and validate GraphQL queries, mutations, and schemas
Compare two texts and find differences with highlighting
Parse user agent strings to extract browser, OS, and device info
Format, validate, and minify JSON code with syntax highlighting
Find and extract JSON paths to navigate JSON structures
Parse query strings and convert URL parameters to JSON
Format SQL queries with proper indentation and keyword formatting
Edit markdown with live HTML preview and conversion
Escape and unescape strings for JavaScript, HTML, JSON, Regex, and URL
Convert text to binary and binary to text with 8-bit encoding
Convert text to hexadecimal and hex to text
Parse URLs and extract all components including query parameters
View comprehensive browser information and capabilities
Encode and decode HTML entities for safe HTML content
Convert IP addresses to decimal and decimal to IP addresses
Extract domains from URLs with optional subdomain removal
Parse and create cookie strings with all attributes
View and edit localStorage data for the current domain
View and edit sessionStorage data for the current session
Compare and increment semantic versions
Validate version formats and test version compatibility
Developer tools are small utilities that help programmers write, test, debug, and optimize code more efficiently.
Instead of manually formatting data, debugging errors, or converting formats, these tools automate common development tasks and improve workflow speed.
They are especially useful for frontend developers, backend engineers, and anyone working with APIs, data, or code transformations.
You can open a tool in a new tab, paste data, and copy the result in seconds—no install or project setup.
They complement your editor and terminal: clean or convert here, then paste back into your code or docs.
They help beginners learn formats and help experienced developers skip repetitive checks.
For everyday tasks, many people start with a JSON Formatter, the Base64 Encoder, a URL Encoder, or the Timestamp Converter when dates and logs need to line up across systems.
These tools follow standard development practices to ensure reliable and consistent results.
These tools are commonly used by developers, students, and technical professionals worldwide for quick formatting, validation, and everyday data checks.
Most tools follow the same quick workflow—pick a task, run it once, and move on.
These tools are designed to handle common development tasks efficiently so you can focus on building, not fighting formats or small conversions.
Yes, all tools are free to use with no hidden costs.
No, all tools run directly in your browser.
Yes, your data is processed locally and not stored.
Yes, they are suitable for both learning and professional use.
Most tools support standard input sizes. Performance may vary for very large data.
No signup required. Your data stays on your device.
No signup required. Your data stays on your device and is never stored.
Works instantly in your browser. No downloads or setup required.
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Comprehensive guide to developer utilities and coding tools.
Best practices for formatting and validating JSON in your projects.