Content can be presented without loss of information or functionality when scrolling in only one direction at 320px width.
ADA Relevance: Level AA is the standard courts reference for ADA compliance. Failing this criterion creates direct legal exposure for ADA lawsuits.
Users who zoom to 400% or use small viewports should not need to scroll horizontally to read content. Horizontal scrolling makes content nearly unusable.
Set browser width to 320px. Verify no horizontal scrolling is needed (except for data tables, maps, or images that require two-dimensional layout). All text should reflow.
Use responsive design with CSS media queries. Avoid fixed-width layouts. Use relative units. Ensure content reflows to a single column at narrow viewports.
These industries commonly fail WCAG 1.4.10 due to the nature of their website content and functionality:
Different platforms have different levels of built-in support for WCAG 1.4.10:
WCAG 1.4.10 requires that content can be presented without loss of information or functionality when scrolling in only one direction at 320px width. This is a Level AA criterion under the Perceivable principle, meaning it is required for ADA compliance (courts reference WCAG 2.1 AA).
Set browser width to 320px. Verify no horizontal scrolling is needed (except for data tables, maps, or images that require two-dimensional layout). All text should reflow.
Yes. WCAG 1.4.10 is a Level AA criterion, and courts consistently reference WCAG 2.1 AA as the standard for ADA compliance. Failing to meet this criterion creates legal exposure for ADA lawsuits, which typically settle for $10,000 to $75,000+.
Failing WCAG 1.4.10 Reflow means users who zoom to 400% or use small viewports should not need to scroll horizontally to read content. Horizontal scrolling makes content nearly unusable. This violation is detectable by automated scanning tools that ADA plaintiff attorneys use to identify lawsuit targets. ADA CodeFix can scan your site for this specific violation and provide AI-generated code fixes.
ADA CodeFix automatically scans for Reflow violations and provides AI-generated code fixes — not overlay widgets.
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