Compare— help & troubleshooting

Diff two PDFs.

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Compare troubleshooting: password errors, scans with no text diff, and all-red overlays
Fixes for the most common problems when comparing two PDFs in AttachKit: password-protected files, scanned pages that show no text differences, overlays that flag the whole page, and very long pages that overwhelm the text diff.
How to compare two PDF versions side by side in your browser
Drop a Before and an After PDF to see exactly what changed between them — side-by-side pages, a pixel-level overlay, or a word-level text diff — with neither file ever leaving your browser.

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