Lab — Glow Check
Test web experiences for accessibility, responsiveness, performance, and implementation quality.
Preview HTML, CSS, and JavaScript
The Lab is a browser-based sandbox for trying interface code and refining visual experiments. Work with HTML, CSS, and JavaScript locally in your browser to see how a composition behaves before integrating it into a larger project.
Refine your implementation
Bring ideas from HTML Blocks or the Code Vault into your testing workflow. Use the Accessibility Auditor for contrast, semantic HTML, and ARIA checks; automated findings are a starting point rather than a guarantee of accessibility.