QA & Testing
Accessibility, visual-regression, performance and asset-optimization testing.
12 resources.
12 of 12
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axe DevTools
Accessibility testing
Automated a11y checks.
Best for Testing accessibility.
- Verified Sep 2026
- Maintenance: Active
More
Why it's here Wire into Playwright so AI coding agents tests a11y itself.
- Freemium
- Open source
- MCP
- npm
- MCP
- npm
- Installs for AI agents
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axe-core
Accessibility testing
Automated a11y checks.
Best for Testing accessibility.
- Verified Sep 2026
- Maintenance: Active
More
Why it's here Wire into Playwright so AI coding agents tests a11y itself.
- Freemium
- Open source
- MCP
- npm
- MCP
- npm
- Installs for AI agents
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BackstopJS
Visual regression
Open-source screenshot diffing.
Best for Catching unintended visual changes.
- Verified Sep 2026
- Maintenance: Active
More
Why it's here Useful for 'did my update break the client's site'.
- Open Source
- Open source
- npm
- npm
- Installs for AI agents
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ffmpeg
Asset optimization
Programmatic image/SVG/video optimisation.
Best for Optimizing images and media for the web.
- Verified Sep 2026
- Maintenance: Active
More
Why it's here AI coding agents can batch-optimise every asset without you.
- Open Source
- Open source
- npm
- npm
- Installs for AI agents
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Lighthouse
Performance testing
Core Web Vitals, SEO, a11y.
Best for Measuring performance and Core Web Vitals.
- Verified Sep 2026
More
Why it's here A standard, automatable audit for performance, accessibility and SEO.
- Free
- MCP
- npm
- MCP
- npm
- Installs for AI agents
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pa11y
Accessibility testing
CLI a11y runner.
Best for Testing accessibility.
- Verified Sep 2026
- Maintenance: Active
More
Why it's here CI-friendly.
- Free
- Open source
- npm
- npm
- Installs for AI agents
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PageSpeed Insights
Performance testing
Core Web Vitals, SEO, a11y.
Best for Measuring performance and Core Web Vitals.
- Verified Sep 2026
More
Why it's here AI coding agents can run it and fix what it finds.
- Free
- MCP
- npm
- MCP
- npm
- Installs for AI agents
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Responsively App
Accessibility testing
All breakpoints side by side.
Best for Testing accessibility.
- Verified Sep 2026
More
Why it's here Nice for client demos.
- Free
- Open source
- Desktop
- Desktop app
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sharp
Asset optimization
Programmatic image/SVG/video optimisation.
Best for Optimizing images and media for the web.
- Verified Sep 2026
- Maintenance: Active
More
Why it's here Lets a build pipeline batch-optimise every asset automatically.
- Open Source
- Open source
- npm
- npm
- Installs for AI agents
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Storybook
Visual regression
Component workshop.
Best for Catching unintended visual changes.
- Verified Sep 2026
- Maintenance: Active
More
- Open Source
- Open source
- npm
- npm
- Installs for AI agents
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SVGO
Asset optimization
Programmatic image/SVG/video optimisation.
Best for Optimizing images and media for the web.
- Verified Sep 2026
- Maintenance: Active
More
Why it's here AI coding agents can batch-optimise every asset without you.
- Open Source
- Open source
- npm
- npm
- Installs for AI agents
-
WAVE
Accessibility testing
Browser a11y evaluator.
Best for Testing accessibility.
- Verified Sep 2026
More
Why it's here Human check after axe.
Less suited to Human check after axe.
- Free
- Web
- Browser only
No resources match these filters. Clearing a filter usually widens the results.
Compare tools for a job
Compare tools for accessibility testing 3 options
| Option | Maintenance | Cost | Access |
|---|---|---|---|
| axe-core via Playwright | Active | Free | Installs via npm |
| pa11y | Active | Free | Installs via npm |
| WAVE | Live | Free | Manual, in the browser |