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ARC Toolkit
A browser developer-tools extension for checking page accessibility and reviewing findings by element.
About ARC Toolkit
ARC Toolkit is a browser extension for Chrome and Firefox that tests a single web page for accessibility on demand. It checks the page against WCAG 2.1 Level A and AA guidelines and reports failures grouped by element, so each element that failed one or more rules can be reviewed. Recommendations include code-level advice for fixing WCAG errors, and the tool can also flag color contrast issues and show the tab order as a visual path.
The toolkit uses the same rules engine as ARC Monitoring and the ARC API, so reports should match when the tools are used together. The source describes ARC Toolkit as one part of the wider ARC Platform, and it suggests using ARC Monitoring dashboards to prioritize work before running detailed page-level testing with the toolkit. The toolkit itself is free for all users. Testing is limited to one page at a time, and the source does not describe coverage of other WCAG versions or levels.
Key features
- Scans individual pages for WCAG 2.1 Level A and AA conformance failures
- Groups results by element, showing all elements that failed one or more rules
- Provides code-level recommendations for resolving WCAG errors
- Identifies color contrast issues on the page
- Highlights tab order with a visual path through the page
- Configurable preferences to report only the issues you select
Best for: Web developers and accessibility testers who need to check individual pages for WCAG 2.1 Level A and AA issues in Chrome or Firefox.
Good for
- Free for all users
- Uses the same rules engine as ARC Monitoring and the ARC API, so reports stay consistent
- Tests and retests on demand without scheduling
Watch out for
- Testing covers one page at a time
- Checks against WCAG 2.1 Level A and AA guidelines as stated
- Available as a browser extension for Chrome and Firefox
ARC Toolkit at a glance
- Website
- vispero.com/lp/arc-toolkit
- Category
- Development › Web Development
- Type
- Online tool
- Pricing
- Free
- Open source
- Not stated
- Last checked
- Oct 9, 2026 · Online when checked
- Listed
- Oct 9, 2026
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ARC Toolkit FAQ
Is ARC Toolkit free to use?
The homepage states that ARC Toolkit is free for all users.
Which accessibility guidelines does ARC Toolkit test against?
It tests against the WCAG 2.1 Level A and AA guidelines.
Can test results be moved into bug tracking software?
Yes. The homepage states that results can be cut and pasted into bug tracking software.
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