Developer Tools
Explore our comprehensive collection of developer tools. Everything runs locally for maximum speed and security.
URL Encoder / Decoder
Ensure your web addresses are processed correctly with our professional URL encoder and decoder. This tool uses percent-encoding (RFC 3986) to transform reserved, non-ASCII, and special characters into a format that can be securely transmitted over the internet. Whether you are a web developer debugging API endpoints, a digital marketer creating clean tracking links with UTM parameters, or an SEO specialist fixing broken links with special characters, this utility is essential. It safely sanitizes URL parameters for web apps, preventing browser parsing errors and improving cross-browser compatibility. Use it to encode query strings for GET requests or decode complex percent-encoded strings back into human-readable text instantly. Keywords: URL encoder online, percent-encoding tool, sanitize URL parameters, decode URL string, web safe URL converter, percent-encoding special characters, online URL decoder for developers.
HTML Formatter
Optimize your frontend workflow with our advanced HTML formatter and beautifier. This developer-centric tool allows you to take messy, unorganized source code and transform it into a perfectly indented, readable structure. It supports both beautification for debugging and minification for production performance, helping you reduce page load times and improve Core Web Vitals. As a powerful online HTML editor, it identifies syntax errors and ensures your tags are properly nested. Perfect for web designers cleaning up exported code from site builders or developers inspecting legacy projects. Our local browser-based processing means your proprietary code never touches a server, ensuring 100% privacy and security. Keywords: HTML formatter online, beautify HTML code, minify HTML for speed, online HTML beautifier, clean HTML source code, fix HTML indentation, HTML syntax highlighter, professional HTML formatting tool.
CSS Formatter
Transform your stylesheets with our professional CSS formatter and minifier. This tool is designed for modern web development, allowing you to beautify complex CSS, SCSS, or LESS files with customizable indentation levels and property ordering. It effectively removes unnecessary whitespace, comments, and line breaks to create a minified CSS version that boosts website performance. Whether you are debugging a layout shift or preparing a production-ready build, this CSS pretty printer ensures your styles are clean and consistent. It is an essential utility for frontend engineers looking to maintain high-quality code standards while optimizing delivery. Keywords: CSS formatter online, beautify CSS styles, minify CSS for production, online CSS beautifier, CSS pretty printer, optimize CSS file size, format CSS code online, high-performance CSS minifier.
JS / TS Formatter
Achieve perfect code consistency with our JavaScript and TypeScript formatter. Designed to mimic the behavior of professional linters like Prettier or ESLint, this tool beautifies your JS/TS code with standard indentation, semicolon management, and clear bracket spacing. It is ideal for developers cleaning up minified scripts, debugging complex logic, or standardizing collaborative codebases. By providing a readable view of obfuscated JavaScript, it aids in security audits and logic verification. Our formatter supports modern ES6+ features and TypeScript syntax, making it the go-to utility for full-stack developers. Process your code locally in-browser for maximum speed and security. Keywords: JavaScript formatter online, beautify JS code, TypeScript formatter, format JavaScript online free, JS beautifier for developers, minify JS code, online TypeScript beautifier, JavaScript code cleaner.
Regex Tester
Debug and validate your Regular Expressions in real-time with our advanced Regex Tester. This tool provides a live playground where you can test patterns against custom strings, featuring instant syntax highlighting and match explanations. Whether you are validating email addresses, extracting data from logs, or building complex search-and-replace logic, this regular expression debugger is an indispensable developer asset. It supports various flavors of Regex, including JavaScript, PHP (PCRE), and Python, helping you catch edge cases and logic errors before deployment. With a focus on performance and accuracy, it simplifies the most intimidating part of programming. Keywords: Regex tester online, test regular expressions live, regex debugger for developers, online regex validator, regular expression pattern tester, javascript regex tester, regex cheat sheet tool, debug regex patterns.
UUID / GUID Generator
Bulk generate Universally Unique Identifiers (UUID) or Globally Unique Identifiers (GUID) for your database and software testing needs. Our tool produces standards-compliant UUID version 4 (v4) strings, which are essentially 128-bit random numbers used as primary keys or unique asset tags in modern applications. You can generate a single ID or hundreds in a single click, perfectly suited for seeding databases, creating session tokens, or testing distributed systems. This fast UUID generator follows the RFC 4122 standard, ensuring a high degree of entropy and near-zero collision probability. It is a critical utility for backend engineers and QA testers. Keywords: UUID generator online, bulk GUID generator, generate random UUID v4, online GUID creator, unique identifier generator, bulk UUID v4 generator for testing, standards-compliant UUID generator.
Hash Generator
Securely generate cryptographic hashes for data integrity and verification. Our tool supports industry-standard algorithms, including MD5, SHA-1, SHA-256, and SHA-512. Whether you are verifying file checksums, creating digital signatures, or testing password storage logic, this online hash generator provides instant, accurate results. By processing data locally in your browser, your sensitive strings never leave your machine, providing a secure alternative to server-side hashing. It is an essential tool for cybersecurity professionals and developers working with sensitive data transmission. Keywords: online hash generator, SHA256 generator free, MD5 hash creator, generate SHA512 hash, cryptographic hash tool, file checksum verifier, secure data hashing online, developer hash utility.
XML Viewer / Formatter
Visualize and format complex data structures with our online XML viewer and beautifier. This tool takes raw, unformatted XML strings and transforms them into a clean, hierarchical tree structure that is easy to read and navigate. It features syntax highlighting, error detection, and indentation controls, making it the perfect utility for debugging SOAP APIs, configuration files, or data exports. Beyond viewing, you can minify XML to reduce payload sizes for network requests. Our XML validator checks for well-formedness, ensuring your code adheres to standard markup rules before use in production. Keywords: XML viewer online, beautify XML code, format XML online free, XML validator and formatter, XML tree viewer, minify XML online, professional XML debugger, fix XML syntax.
JSON Diff Checker
Quickly find differences between two JSON objects with our powerful JSON diff checker. This side-by-side comparison tool highlights additions, deletions, and modifications in real-time, helping you debug API response changes or configuration drift. It handles nested arrays and objects with ease, providing a clear visual representation of data disparities. Essential for developers managing microservices or QA engineers verifying data migrations, this utility saves hours of manual comparison. Simply paste your source and target JSON to see a color-coded analysis of the differences instantly in your browser. Keywords: JSON diff checker online, compare two JSON objects, find differences in JSON, JSON comparison tool free, online JSON diff viewer, debug JSON changes, side-by-side JSON comparison.
SQL Formatter & Validator
Format and validate SQL queries with syntax highlighting, error detection, and code beautification. Essential for database developers and SQL query optimization with professional formatting.
Frequently Asked Questions
Are all tools completely free to use?
Yes, all our online tools are 100% free with no hidden costs, subscriptions, or premium features. We believe in providing powerful utilities accessible to everyone, supported by ethical advertising and user donations.
How do you ensure data privacy and security?
All processing happens locally in your browser using client-side JavaScript. Your files never leave your device, aren't uploaded to our servers, and aren't stored anywhere. This ensures complete privacy and eliminates data breach risks.
Do the tools work offline?
Once loaded, most tools function offline since they run entirely in your browser. However, initial loading requires internet connection to download the tool interface and processing libraries.
What browsers are supported?
Our tools work on all modern browsers including Chrome, Firefox, Safari, Edge, and mobile browsers. We use progressive web technologies to ensure compatibility across desktop, tablet, and smartphone devices.