How scoring works
The accessibility score
Every audited page gets a 0–100 score for how many WCAG 2.1 AA checks pass. It's an objective count of detectable issues — not a legal verdict, and not a guarantee of compliance.
TOOLING — NOT LEGAL ADVICE
Severity weights
Each violation deducts points from 100 based on how badly it blocks users. The store score is the average across the pages we audit.
Critical
−6 eachBlocks a whole group of users — e.g. an image with no text alternative, invisible to screen-reader shoppers. Deducts 6 points each.
Serious
−3 eachA real barrier — an unlabeled form field, a link with no name, zoom disabled, or a missing page language/title. Deducts 3 points each.
Moderate
−1 eachDegrades the experience — skipped heading levels, a missing skip-link, duplicate IDs, a positive tabindex. Deducts 1 point each.
How the number is computed
score = max(0, 100 − 6×critical − 3×serious − 1×moderate)
A page with no detectable issues scores 100. One image missing alt text drops it to 94; three of them plus an unlabeled search field lands at 79. The dashboard averages your audited pages and lists every issue worst-first, so you fix the biggest barriers first.
The checks we run
Images without a text alternative
criticalWCAG 1.1.1
Form fields without a label
seriousWCAG 3.3.2
Page language not set
seriousWCAG 3.1.1
Page has no title
seriousWCAG 2.4.2
Links with no discernible text
seriousWCAG 2.4.4
Buttons with no accessible name
seriousWCAG 4.1.2
Zoom disabled in the viewport
seriousWCAG 1.4.4
Frames without a title
moderateWCAG 4.1.2
Duplicate id attributes
moderateWCAG 4.1.1
Positive tabindex disrupts focus order
moderateWCAG 2.4.3
Heading levels skipped or missing
moderateWCAG 1.3.1
Empty headings
moderateWCAG 1.3.1
List markup with non-list children
moderateWCAG 1.3.1
No skip-to-content link
moderateWCAG 2.4.1
What the score is not
A 100 means the automated WCAG 2.1 AA checks AccessProof runs all pass on the pages we audited — it does not certify that your store is legally accessible, EAA-compliant, or approved by any regulator. Automated tools catch a large share of issues but not all of them; some criteria (like colour contrast and full keyboard journeys) need human review. AccessProof is tooling and evidence, and we do not sell an accessibility overlay.