Introduction to Web Accessibility (WCAG 2.1)
Learn the fundamentals of web accessibility and why it matters for every website. Understand WCAG 2.1 guidelines and how to make your sites inclusive for all users.
accessibilityWCAGa11yinclusive design
Welcome to Developer Resources
Whether you're building accessible web applications, optimizing code, or designing beautiful interfaces, our comprehensive guides will help you master modern web development best practices.
All our tools are free, privacy-focused (running entirely in your browser), and designed to help developers create better web experiences. Explore our guides below to learn how to use our tools effectively and improve your development workflow.
Web Accessibility
Creating Accessible Forms: Complete Guide
Master accessible form design with proper labels, error handling, ARIA attributes, and keyboard navigation. Ensure your forms work for everyone.
accessible formsform labelsARIAform validation
Color Contrast and Visual Accessibility
Understand color contrast ratios, WCAG AA and AAA standards, and how to choose accessible color combinations for better readability.
color contrastWCAG AAvisual accessibilityreadable design
Keyboard Navigation Best Practices
Implement proper keyboard navigation, focus management, and skip links to make your websites accessible to keyboard-only users.
keyboard navigationfocus managementkeyboard accessibility
Code Quality
Why Code Formatting Matters
Discover how consistent code formatting improves readability, reduces bugs, and enhances team collaboration. Learn about Prettier and modern formatting tools.
code formattingprettiercode qualitycode style
JavaScript Minification: Performance Guide
Learn how JavaScript minification reduces file sizes, improves load times, and optimizes web performance. Master Terser and minification best practices.
javascript minificationterserperformance optimizationfile size reduction
JSON Best Practices for APIs
Master JSON formatting, validation, and best practices for API design. Learn about proper data structures and error handling.
JSONAPI designdata structuresJSON validation
Design & Assets
Complete Favicon Guide for All Platforms
Create perfect favicons for web, iOS, Android, and PWA. Learn about different sizes, formats, and implementation best practices.
faviconapp iconsPWA iconsweb icons
Using Placeholder Images Effectively
Learn when and how to use placeholder images in development, prototyping, and design mockups. Best practices for responsive placeholders.
placeholder imagesprototypingmockupsdesign assets
Card UI Patterns and Best Practices
Explore modern card UI patterns, when to use them, and how to implement accessible, responsive card components.
card UIUI patternscomponent designresponsive design
Try Our Free Developer Tools
Accessibility Playground
Test and validate accessible web components
JavaScript Formatter
Format JS code with Prettier
JSON Formatter
Validate and beautify JSON
JS Minifier
Compress JavaScript with Terser
Favicon Generator
Create app icons for all platforms
Card Generator
Design beautiful card components
Placeholder Generator
Create custom placeholder images
Why Use Our Developer Tools?
Accessibility First
Our Accessibility Playground helps you build WCAG 2.1 compliant web components with real-time validation. Test your code against accessibility standards and ensure your websites work for everyone, including users with disabilities. Learn proper ARIA attributes, semantic HTML, and keyboard navigation.
Professional Code Quality
Format JavaScript with Prettier for consistent, readable code. Minify with Terser to reduce bundle sizes and improve performance. Validate and beautify JSON for API development. All tools run instantly in your browser with no server uploads required.
Design & Asset Tools
Generate favicons for web, iOS, Android, and PWA applications. Create custom placeholder images for prototypes and mockups. Design beautiful card components with live preview and get CSS or Tailwind code instantly. Perfect for rapid prototyping and design systems.
Privacy & Performance
All our tools run entirely in your browser - your code and data never leave your device. No server uploads, no tracking, complete privacy. Lightning-fast processing with no server latency. Free forever with no usage limits or hidden fees.