Page has a unique and descriptive title
What this criterion checks
This criterion maps to 2.4.2 Page Titled. A detailed plain-language description is maintained in the WebLens criteria catalogue; the WCAG sub-test breakdown below describes exactly what the agent checks and what it does not.
How it's assessed
WebLens walks each user journey, captures a screenshot at every step, and an agent reasons over that evidence. See the how WebLens works for the full pipeline and the deterministic checks layered in for accessibility.
Sub-test coverage
2.4.2 Page Titled is broken into 4 sub-tests. Coverage is honest about where the agent is reliable, where it only partially checks the requirement, and where a human reviewer is still needed.
1 full3 not covered
- Page title existenceFull
Our tool checks that the HTML document contains a non-empty title element within the head section.
- Dynamic page title updates (single-page applications)Not covered
Our tool performs a single-page scan and cannot verify whether page titles update dynamically during client-side navigation in single-page applications. Requires behavioral testing across multiple views.
- Page title accuracy for search results and form stepsNot covered
Evaluating whether dynamic page titles reflect current state (e.g., search terms, current form step) requires human judgment. Not automatable.
- Page title describes topic or purposeNot covered
Our tool verifies title element presence but cannot evaluate whether the title meaningfully describes the page's topic or purpose (e.g., distinguishing "Untitled" from an informative title). Requires human judgment.
How reliable it is
This criterion is still building up testing data, so confirm its findings as you review. See Accuracy & confidence for how the confidence tags are set.