Use 28 free developer tools to format code, test APIs, optimize assets, validate configurations, and debug faster. Fast, beginner-friendly & totally free — perfect for developers.
Our collection of 28 development tools is designed to streamline your workflow, improve code quality, and accelerate development cycles. From frontend to backend, testing to deployment.
Whether you're debugging API calls, optimizing assets, or validating configurations, our tools provide instant solutions without the need for complex setup or installations.
Built by developers for developers. Each tool is optimized for speed, accuracy, and ease of use in real-world development scenarios.
Explore ToolsFormat, validate, and beautify JSON data with syntax highlighting and error detection.
Use ToolClean and format HTML code with proper indentation, line breaks, and structure.
Use ToolMinify CSS files by removing whitespace, comments, and optimizing selectors.
Use ToolCompress JavaScript code for production while maintaining functionality.
Use ToolFormat SQL queries with proper indentation and syntax highlighting.
Use ToolVisualize and format git diff outputs with syntax highlighting and line numbers.
Use ToolTest REST APIs with multiple HTTP methods, headers, and authentication options.
Use ToolTest regular expressions with live matching and generate regex patterns.
Use ToolDecode JSON Web Tokens and verify their signature and claims.
Use ToolAnalyze HTTP headers from any URL with security and performance insights.
Use ToolTest Cross-Origin Resource Sharing configurations and debug CORS issues.
Use ToolTest web applications for SQL injection vulnerabilities with safe testing methods.
Use ToolGenerate unit test templates for popular testing frameworks based on your code.
Use ToolCheck CSS and JavaScript compatibility across different browser versions.
Use ToolTest website responsiveness across different device sizes and orientations.
Use ToolTest Websocket connections with real-time message sending and receiving.
Use ToolGenerate harmonious color palettes with hex, RGB, and HSL values.
Use ToolGenerate unique identifiers (UUID v1, v4) for databases and applications.
Use ToolGenerate secure API keys with configurable length and character sets.
Use ToolSave, organize, and share code snippets with syntax highlighting.
Use ToolOptimize SVG files by removing unnecessary metadata and compressing paths.
Use ToolManage, encrypt, and format environment variables for different deployment stages.
Use ToolValidate Dockerfile syntax and check for best practices and security issues.
Use ToolValidate Kubernetes YAML configurations and check for common errors.
Use ToolExplore and validate GraphQL schemas with interactive documentation.
Use ToolAnalyze npm package sizes and their dependencies for optimization.
Use ToolCheck software licenses and generate SPDX-compliant license expressions.
Use ToolProfile web application performance with basic metrics and recommendations.
Use ToolBuilt with developers in mind, our tools solve real problems you face every day
No setup, no installation. Get results immediately in your browser.
Your code and data are never stored on our servers. Complete privacy.
Use our tools as many times as you need. No limits, no subscriptions.
Tools built for actual development workflows, not just demos.
Regular updates with new features and improvements based on feedback.
Features and tools suggested by developers like you.
Start using our powerful development tools today. No registration required — just pick a tool and begin!
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