Compare with the original
Open the source and the archive side by side. Compare page count, paper dimensions, orientation, small text, transparency and visible form values. The conversion report records the dimensions and pixel size used for every page.
Inspect source PDFs that use unusual fonts, optional layers or annotations especially carefully. Rendering is based on the supported default PDF.js view; an application-specific print preset can produce a different appearance.
Keep provenance
Store the original, converted file and conversion report together. A visual copy is a derived file and should not silently replace the source, particularly for signed or interactive documents.
Downloads may contain document titles or file-related information that you chose to retain. Review them before sharing. Processing stays in your browser, including when optional analytics is enabled.
Use a repeatable inspection sample
Start with the first and last pages to catch missing boundaries. Then inspect a page with the smallest text, one with fine lines, one containing an image and any page containing a form or signature appearance. Compare portrait and landscape pages separately. The report records page dimensions in points, where 72 points equal one inch, so you can detect an unintended paper-size change without relying on the viewer’s zoom.
At a comparable zoom, look for clipped edges, replacement glyphs, missing characters, unexpected white boxes and faint text. Enlarge a troublesome area in both files. Pixelation that appears only in the archive indicates a resolution trade-off; missing content may require a different source export or rendering workflow. Do not interpret a matching page count as proof that every page contains the same information.
Record a decision, not just a download
Use a clear folder structure containing the original PDF, visual archive, conversion report and independent validation report. Record the resolution and any known differences that you accepted. If a formal archive has size or naming rules, check those before submission. Keep the signed original when evidentiary integrity matters: the visual appearance of a signature in the raster copy is not the original cryptographic signature.