Privacy-First Tools
for Developers
Build accessible, beautiful web applications with professional tools that run entirely in your browser. No tracking. No signup. No limits.
Accessibility Playground
Most popular tool
Create and share accessible web components with live preview, accessibility checks, and code export.
Accessibility & Testing
Build inclusive web experiences with WCAG compliance
Accessibility Code Playground
Create and share accessible web components with live preview and accessibility checks.
VPAT 2.5 Generator
Create professional VPAT® 2.5 accessibility conformance reports. Export as DOCX, HTML, or JSON.
Contrast Checker
Check WCAG AA/AAA color contrast ratios with live preview and accessible suggestions.
ARIA Reference Guide
Complete WAI-ARIA reference with 69 roles and 45 attributes. Code examples and live demos.
Code Formatters & Validators
Clean, format, and validate your code with professional tools
JavaScript Formatter
Professional code formatting powered by Prettier with customizable options.
CSS Formatter
Format and beautify CSS code with Prettier. Customize indentation and more.
HTML Formatter
Format and validate HTML with accessibility checks and structure validation.
JSON Formatter
Format, validate, and beautify JSON. Sort keys, minify, and more.
Regex Tester
Test and debug regular expressions with live highlighting and pattern library.
Design & Styling Tools
Create beautiful designs with colors, effects, and components
Color Palette Generator
Create beautiful color schemes with harmony rules and WCAG contrast checks.
Glassmorphism Generator
Create stunning glassmorphism and neumorphism effects with live preview.
Card Generator
Design beautiful cards with live preview. Get CSS or Tailwind code instantly.
SVG Illustrator
Create custom SVG illustrations with shapes, text, and instant code export.
Webpage Builder
Build landing pages with drag-and-drop. Export clean HTML/CSS code instantly.
Generators & Converters
Generate assets and convert data formats instantly
UUID Generator
Generate UUID v1 and v4 instantly. Batch generate up to 100 UUIDs.
Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-384, SHA-512 cryptographic hashes.
Favicon Generator
Create favicons and app icons for iOS, Android, PWA, and web.
QR Code Generator
Create custom QR codes with colors and logos. Download as PNG or SVG.
Placeholder Images
Create custom placeholder images with dimensions, text, colors, and gradients.
Base64 Encoder/Decoder
Encode text and images to Base64 or decode Base64 strings.
Invoice Generator
Create professional invoices with logo, line items, and PDF export.
Developer Utilities
Optimize code, compress assets, and design databases
JavaScript Minifier
Compress and optimize JavaScript code with Terser for production.
Image Optimizer
Compress and optimize images. Convert between JPEG, PNG, and WebP.
Database Schema Generator
Visual database designer with drag-and-drop. Export to SQL.
Mock API Generator
Generate realistic REST API endpoints with sample data instantly.
Explore More
Resources for web accessibility and development
Latest from the Blog
Tutorials, guides, and best practices
Base64 Encoding & Decoding: Complete Guide for Developers (2025)
Master Base64 encoding and decoding for web development. Learn when to use Base64, implementation techniques, and best practices with real examples.
November 16, 2025CSS Formatting & Best Practices: Complete Style Guide (2025)
Master CSS formatting, organization, and best practices. Learn clean code techniques, naming conventions, and architecture patterns with real examples.
November 16, 2025Favicon Guide: Complete Implementation & Best Practices (2025)
Master favicon creation, formats, and implementation. Learn sizes, browser support, and optimization techniques with step-by-step examples.
November 16, 2025Frequently Asked Questions
Everything you need to know about our developer tools
Are these tools really free?
Yes! All tools are 100% free with no hidden costs, subscriptions, or usage limits.
Is my code secure and private?
Absolutely. All tools run in your browser—your code never leaves your device.
Do I need to create an account?
No account needed! All tools work instantly. Only the Playground needs an account for saving.
What browsers are supported?
All modern browsers: Chrome, Firefox, Safari, and Edge. Use the latest version for best results.
Can I use these for commercial projects?
Yes! Use our tools for any project. No licensing restrictions or attribution required.
How do I report bugs or request features?
Visit halfAccessible.com to contact us with feedback, bug reports, or feature requests.