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: Continuous semantic HTML width differs from the PDF page width.
skipped text-run-count: Continuous semantic HTML intentionally groups extracted text runs into paragraphs and other semantic elements.
needs-review word-boundaries: Rendered HTML text appears to have lost word boundaries or token coverage.
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.
needs-review visual-color-difference: PDF render and browser page screenshot have different pixel dimensions; color was compared across stable foreground interiors in the overlapping region only.