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Landmark Validator

v1.1.0

Verify ARIA landmark regions for complete and non-overlapping page structure.

Validates that an HTML page uses ARIA landmark regions correctly — checks for a main landmark, skips repeated banners/contentinfos, ensures no orphaned content outside landmarks, and flags missing search and navigation roles.

How to use
  • →Paste HTML or enter a URL to extract and validate the landmark structure.
  • →Review the landmark tree — every major content area should be wrapped in a semantic landmark.
  • →Fix missing landmarks first: add main, nav, header, and footer elements (or their ARIA role equivalents).
  • →Check that no content sits outside any landmark region — orphaned content is inaccessible to screen-reader users.