Accesserty DevCheck
Run in-browser web accessibility checks, WCAG-related issue review, manual review lenses, simulations, AI-assisted semantic review, and PDF structure checks on current pages and PDFs.
Accessibility checks should not belong to one role
DevCheck does not replace accessibility expertise. It gives people reviewing pages and PDFs a practical first check when they notice a concern.
You can check public pages, local builds, staging sites, authenticated flows, interaction states, and PDF documents without sending the page to an external URL scanner.
Most checks run in the browser. Only the optional AI Semantic Check sends extracted text and selected images to Google Gemini after you explicitly start it.
What you can check first
Make accessibility issues concrete first, then let the right person review, fix, and re-test them.
Automated web accessibility scan
Use axe-core to check machine-detectable WCAG A/AA and best-practice issues on the current page, then locate affected elements.
Visual and sensory review
Switch color vision, text spacing, visual field loss, presbyopia, myopia, and cataract modes to review readability risks in real page states.
Manual review lenses
Use Focus Path, Heading Structure, Landmark Regions, image alt overview, and touch target size to draw page structure and common interaction risks for manual review; orange hints mean review manually, not confirmed failures.
AI-assisted semantic check
Review semantic quality that rule-based tools often cannot judge, such as whether link text explains its destination, language changes are marked, and image alt text matches the actual image, with suggested alt text improvements.
PDF accessibility structure signals
Inspect basic PDF accessibility signals such as language, tags, links, images, form fields, bookmarks, and page structure consistency.
Who should use DevCheck?
- Designers
Use simulations for color vision, text spacing, visual conditions, and touch targets as concrete input for design reviews and cross-functional discussion.
- PMs and product people
Use scans and simulations to turn a vague concern into clues the team can discuss, track, and assign.
- Engineers and QA
Run web accessibility scans and simulations in local builds, staging pages, authenticated flows, and regression checks so issues are found earlier and re-tested faster.
It does not replace a full audit
DevCheck is useful for first checks, issue discussion, and re-testing fixes. It is not an ADA compliance checker or a legal certification tool. Formal accessibility audits still require human judgment, keyboard testing, assistive technology testing, and contextual review.
AI Semantic Check provides assistive suggestions, not a compliance guarantee. Do not use it on confidential or unauthorized pages, and review suggestions before applying them.
How to start checking
Install the browser extension (Chrome/Edge or Firefox), then open the page you want to inspect.
- Step 1. Install Accesserty DevCheck
Install the extension from the Chrome Web Store or Firefox Add-ons.
- Step 2. Open the page you want to check
It can be a public page, local build, staging site, authenticated flow, interaction state, or PDF document.
- Step 3. Run a scan, review lens, simulation, or semantic check
Run an automated scan, Focus Path, Heading Structure, Landmark Regions, image alt overview, touch target size, visual simulation, AI semantic check, or PDF structure signal check depending on the task.
Install Chrome / Edge
Install Firefox
Frequently asked questions
Accesserty DevCheck is a free, in-browser web accessibility checker for current pages and PDFs. It combines axe-core automated scans, WCAG-related issue location, Focus Path, Heading Structure, Landmark Regions, sensory simulation, AI semantic checks, image alt suggestions, and PDF structure signals so any role can find barriers earlier.
Yes, it is free. Install the browser extension and start checking — no paid plan required.
Yes. DevCheck axe-core scans, Focus Path, Heading Structure, Landmark Regions, simulations, and PDF checks run inside your own browser, so you can check localhost, staging, internal test pages, and authenticated states without sending the page to an external URL scanner. The optional AI Semantic Check sends extracted text and selected images to Google Gemini only after you start it.
No. DevCheck can help with preliminary accessibility checks and re-testing, but it does not provide an ADA legal compliance decision and does not replace a formal audit, assistive technology testing, or legal advice.
It is for people who review pages: product, design, QA, engineering, content, and operations roles. It helps more people run a first check when they spot a risk, without replacing accessibility experts or real-user testing.