LM Studio has a useful semantic baseline, but the sampled audits identify fixes that affect navigation and comprehension. Homepage, pricing, blog, developers, and models samples expose header, navigation, main, and footer landmarks; the model search has the explicit label "Filter catalog" and a visible focus ring. PSI nevertheless reports homepage contrast failure, focusable descendants inside aria-hidden content, missing required ARIA children, prohibited attributes, and visible-label/name mismatches. The MCP documentation page adds no main landmark, missing image alternatives, unnamed SVGs, contrast failure, and heading-order issues. Add a first-focusable skip link, repair widget semantics and color pairs, provide image/SVG names, and retest with live keyboard and accessibility-tree checks.