← Resources
Tools
Bookmarklets
Browser bookmarklets for manual accessibility testing. Drag any bookmarklet to your bookmarks bar, then click it on any page to run the test.
SC 1.4.10
Reflow Tester
Simulates a 320px viewport width to test content reflow without horizontal scrolling.
or right-click → "Bookmark this link"
SC 2.4.4
Ambiguous Links
Highlights anchor elements that lack discernible or descriptive text for screen readers.
or right-click → "Bookmark this link"
SC 1.3.1
Heading Structure
Overlays heading levels visually to audit document outline and skipped heading levels.
or right-click → "Bookmark this link"
SC 1.1.1
Missing Alt Text
Flags images missing alt attributes or with empty alt where context suggests meaning.
or right-click → "Bookmark this link"