visual-diff
kogo (校合) — local, layout-aware PDF diff for revisions: CJK-aware text, figures, equations, annotations, and style changes, via CLI, web UI, or Docker.
Capture screenshots, run pixel-accurate visual diffs, and get AI page analysis from Python — for QA suites, batch jobs, and data pipelines.
"Onion-skin" visual differences between a reference document image and a scanned copy
