Free Developer Tools
A collection of free online tools for developers. Encode, decode, format, and analyze your data securely. All tools run entirely in your browser - your data never leaves your device.
Security
SSL Metrics
Analyze SSL/TLS certificates, check security configurations, and identify potential vulnerabilities in your website's HTTPS setup.
Security Headers
Check HTTP security headers like CSP, HSTS, X-Frame-Options, and more. Get a grade and recommendations to improve your website's security posture.
Encoding
URL Encoder & Decoder
Encode special characters for URLs or decode percent-encoded strings. Supports component encoding, URI encoding, and recursive decoding.
Base64 Encoder & Decoder
Convert text or files to Base64 encoding or decode Base64 strings. Supports standard and URL-safe Base64 variants.
Formatters
JSON Formatter
Beautify minified JSON for readability or minify JSON to reduce file size. Includes syntax validation and custom indentation options.
JavaScript Formatter
Format and beautify JavaScript code or minify it for production. Preserves strings and regex while handling comments.
HTML Formatter
Beautify HTML markup for better readability or minify for smaller file sizes. Preserves content in pre, code, and script tags.
XML Formatter
Format XML documents with proper indentation or minify for compact output. Validates XML syntax and preserves CDATA sections.
CSS Formatter
Beautify CSS stylesheets for development or minify for production. Supports modern CSS features including variables and media queries.
SQL Formatter
Format and beautify SQL queries for better readability. Supports multiple SQL dialects including MySQL, PostgreSQL, and SQL Server.
Assessment
Serverless Readiness Checker
Evaluate if your workload is a good fit for serverless architecture. Answer 8 questions and get personalized recommendations, architecture patterns, and AI prompts.
Containerization Readiness Checker
Evaluate if containerization makes sense for your application. Answer 8 questions and get an honest assessment, effort estimates, and actionable recommendations.
Cloud Migration Readiness Checker
Evaluate if your organization is ready to migrate to the cloud. Answer 10 questions and get migration risks, complexity estimates, and provider-specific recommendations.
Kubernetes Readiness Checker
Evaluate if Kubernetes is the right choice for your organization. Answer 9 questions and get an honest assessment with alternative platform recommendations.
Why Use Our Tools?
All our developer tools are designed with privacy, speed, and simplicity in mind.
100% Private
All processing happens in your browser. Your data never leaves your device or gets sent to any server.
Lightning Fast
No server round-trips needed. Get instant results as you type or paste your content.
Always Free
No sign-up required, no limits, no ads. Just free tools for developers.
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