Foreground diff: dark pixels are shared foreground, red is source-PDF-only foreground, and blue is HTML-only foreground.
Color heatmap: white pixels are background or excluded antialiased edges, gray is a close color match, and yellow through dark red indicates increasing perceptual color difference.
needs-review page-dimensions: Browser page dimensions differ from the PDF page dimensions.
needs-review text-run-count: The browser DOM contains 9 text runs, but the extracted layout contains 72.
passed word-boundaries: Rendered HTML text preserves word boundaries at the current threshold.
passed text-image-overlap: No text/image overlaps were found in the browser layout.
passed text-vector-overlap: No text/large-vector overlaps were found in the browser layout.
needs-review visual-foreground-mask: PDF render and browser page screenshot have different pixel dimensions; foreground masks were compared across the overlapping region only.
skipped visual-color-difference: Color comparison found no stable shared-foreground interior pixels after excluding antialiased edges.