PDF reader guide
How to zoom, rotate, and navigate a large PDF
Use thumbnails, page numbers, fit modes, zoom, and temporary rotation to move through a long document efficiently.

Open the PDF in the reader
- Choose one PDF from the device and wait for the page viewer to open it.
- Use page navigation, zoom, and temporary view rotation to inspect the document.
- Check browser memory use and reopen the source if a very large document stops rendering reliably.
Viewing a PDF versus changing it
Read-only browser viewer; no generated output, edit, annotation, signing, text-to-speech, print, save, or download action.
FAQ
Does opening a PDF in the reader edit the source file?
No editing is required to view the document. Use an editing or annotation tool only when you need to add or change visible content.
What is the current input limit for PDF Reader?
PDF; One PDF ≤50 MiB, ≤500 pages, ≤40 MP canvas.
What does PDF Reader create?
Read-only canvas rendering for viewing; it does not generate a converted output. No generated output or result screen.