Page Structure Preservation

The principle of maintaining the original spatial layout and DOM structure of a webpage when applying accessibility enhancements, content filtering, or other modifications. Preserving page structure ensures that users' mental models of familiar websites remain intact, that heading and landmark navigation continue to work as expected, and that the relationship between visual and structural elements is maintained. This approach contrasts with DOM restructuring methods that rearrange content for accessibility but may disrupt user expectations and navigational patterns.