vital-scans open quality ledger

nih.gov: image inventory

Unique images encountered on scanned pages in 2026-W33, deduplicated by URL and Alt — the same image reused across pages with the same explanation is one row. Images with alternate captions are split into separate rows.

Image alt-text coverage across 23 page(s) scanned in 2026-W33.
CategoryCountShare
Total image occurrences355—
Unique images54—
Has alt text355100%
Decorative (alt="")00%
Missing alt attribute00%

Alt-text quality

Beyond present-vs-missing, each unique image's alt text is classified for quality. Filenames, redundant phrasing ("image of…"), and too-short or too-long values are technically present but unhelpful — the cases a human should rewrite. Decorative and "looks good" are not problems.

Alt-text quality across 54 unique image(s).
VerdictImagesShareWhat it means
Redundant / meaningless12%Phrases like "image of…" or bare values like "photo" add nothing.
Too short24%A single character or word unlikely to convey the image's meaning.
Looks good5194%Present, plausible, no red flags (still worth a human spot-check).

Image detail

Up to 500 unique image occurrences from 23 page(s) scanned, most-reused first. — click a column heading to sort