Catalog comparison
Pa11yWAVE Evaluation Tool
Side-by-side facts from the TestGuild Tool Matcher catalog. Empty cells mean the catalog does not list that attribute — not that the product lacks it.
A comprehensive suite of free and open source tools to help designers and developers make their web pages more accessible. Pa11y believes making the web more accessible improves it for everyone.
A web accessibility evaluation tool developed by WebAIM.org that provides visual feedback about the accessibility of your web content by injecting icons and indicators into your page. WAVE facilitates human evaluation and educates about accessibility issues.
At a glance
Primary testing surface
Pa11y
Accessibility
WAVE Evaluation Tool
Accessibility
Primary capability
Pa11y
Accessibility
WAVE Evaluation Tool
Accessibility
License and pricing
Pa11y
free · open source
WAVE Evaluation Tool
free
Free trial
Pa11y
No
WAVE Evaluation Tool
No
Complexity
Pa11y
beginner
WAVE Evaluation Tool
beginner
Team fit
Pa11y
enterprise, large, medium, small
WAVE Evaluation Tool
enterprise, large, medium, small
Test authoring languages
Pa11y
CSS, HTML, JavaScript, JSON, Node.js
WAVE Evaluation Tool
ARIA, CSS, HTML, JavaScript
Supported platforms
Pa11y
Azure DevOps, CLI, Docker, GitHub Actions, GitLab CI, Jenkins, Node.js, Web
WAVE Evaluation Tool
Browser Extension, Chrome, Web
MCP server
Pa11y
No
WAVE Evaluation Tool
No
Key features (catalog)
Pa11y
Accessibility improvement recommendations, Accessibility issue highlighting and reporting, Automated accessibility compliance reporting, Automated accessibility issue detection, CI/CD pipeline integration, Command-line interface for one-off accessibility testing, Cross-platform compatibility, Custom dashboard front-end capabilities, Daily automated accessibility monitoring, Extensible architecture for custom needs +14 more
WAVE Evaluation Tool
Accessibility error highlighting, ARIA (Accessible Rich Internet Applications) validation, Browser-based accessibility evaluation, Color contrast evaluation, Context menu integration for easy access, Contrast checking tools with alpha/opacity support, Cross-browser compatibility (Chrome extension), Educational information about accessibility issues, Form accessibility evaluation, Image accessibility checking +14 more
Limitations (catalog)
Pa11y
Limited to WCAG guidelines compliance, Limited to web accessibility testing only, May generate false positives requiring manual review, May not catch all accessibility issues (manual testing still needed), No enterprise support or SLA guarantees, No mobile app accessibility testing, Requires JavaScript-enabled environment, Requires web pages to be publicly accessible or properly configured
WAVE Evaluation Tool
Limited to Chrome browser (extension-based), Limited to web page evaluation (no mobile app testing), May generate false positives requiring manual review, May not catch all accessibility issues (manual testing still needed), No automated testing or CI/CD integration, No enterprise features or team collaboration tools, No historical data tracking or reporting, Requires manual activation for each page
| Attribute | Pa11y | WAVE Evaluation Tool |
|---|---|---|
| Primary testing surface | Accessibility | Accessibility |
| Primary capability | Accessibility | Accessibility |
| License and pricing | free · open source | free |
| Free trial | No | No |
| Complexity | beginner | beginner |
| Team fit | enterprise, large, medium, small | enterprise, large, medium, small |
| Test authoring languages | CSS, HTML, JavaScript, JSON, Node.js | ARIA, CSS, HTML, JavaScript |
| Supported platforms | Azure DevOps, CLI, Docker, GitHub Actions, GitLab CI, Jenkins, Node.js, Web | Browser Extension, Chrome, Web |
| MCP server | No | No |
| Key features (catalog) | Accessibility improvement recommendations, Accessibility issue highlighting and reporting, Automated accessibility compliance reporting, Automated accessibility issue detection, CI/CD pipeline integration, Command-line interface for one-off accessibility testing, Cross-platform compatibility, Custom dashboard front-end capabilities, Daily automated accessibility monitoring, Extensible architecture for custom needs +14 more | Accessibility error highlighting, ARIA (Accessible Rich Internet Applications) validation, Browser-based accessibility evaluation, Color contrast evaluation, Context menu integration for easy access, Contrast checking tools with alpha/opacity support, Cross-browser compatibility (Chrome extension), Educational information about accessibility issues, Form accessibility evaluation, Image accessibility checking +14 more |
| Limitations (catalog) | Limited to WCAG guidelines compliance, Limited to web accessibility testing only, May generate false positives requiring manual review, May not catch all accessibility issues (manual testing still needed), No enterprise support or SLA guarantees, No mobile app accessibility testing, Requires JavaScript-enabled environment, Requires web pages to be publicly accessible or properly configured | Limited to Chrome browser (extension-based), Limited to web page evaluation (no mobile app testing), May generate false positives requiring manual review, May not catch all accessibility issues (manual testing still needed), No automated testing or CI/CD integration, No enterprise features or team collaboration tools, No historical data tracking or reporting, Requires manual activation for each page |
How the trade-offs apply to your team
Guidance below is inferred only from catalog differences. It is not a winner pick.
Consider Pa11y if…
- you need coverage for Azure DevOps, CLI, Docker, GitHub Actions
- your team writes tests in JSON, Node.js
- open source matters for your team
- you care about Accessibility improvement recommendations and Accessibility issue highlighting and reporting
Consider WAVE Evaluation Tool if…
- you need coverage for Browser Extension, Chrome
- your team writes tests in ARIA
- you care about Accessibility error highlighting and ARIA (Accessible Rich Internet Applications) validation
Questions to verify before choosing
- Confirm current pricing and packaging on the Pa11y and WAVE Evaluation Tool websites.
- Trial both tools against a real slice of your application, not a demo site.
- Verify the exact browser, device, or OS matrix you must support.