PDF Viewer

Read a PDF on any device without installing an app: zoom in, search the text, jump between pages with thumbnails, and print.

Opened on your device: the PDF is never uploaded. Scanned pages show as pictures, so search finds only real text.

How to use the PDF viewer

  • Zoom: − and + step through 50% to 300%; Fit width fills the screen.
  • Go to a page: type the number and press Enter, or open Thumbnails and tap a page.
  • Search: type a word or phrase and press Search; the arrows move between matches, which are highlighted on the page.
  • Print: opens your browser's print window with every page.

Zoom and screen size

At 100%, one PDF point is shown as one screen pixel, so an A4 page (595 × 842 points) is 595 pixels wide. On a phone whose page area is 358 pixels wide, Fit width sets the zoom to 358 ÷ 595 = 60%. Pages are redrawn sharply for high-resolution screens, up to twice the pixels.

Searching

Search ignores capital letters and accents, so "cafe" finds "Café". A phrase is found even when the PDF stores its words as separate pieces or breaks it over two lines: "annual report" matches "Annual" at the end of one line and "Report" at the start of the next.

Need the text itself? PDF to Text copies all of it, and PDF to Word makes it editable.

Frequently asked questions

Is it safe to open a PDF here?

Yes. The PDF is opened by pdf.js, the PDF engine built into Firefox, inside your browser. It isn't uploaded, and links or scripts inside the PDF don't run.

Why doesn't search find anything?

The PDF is probably scanned: its pages are pictures, so there is no text to search. Run it through Image to Text (OCR) to get searchable text.

How do I print the PDF?

Press Print. The pages are prepared as images and your browser's print window opens, where you can pick a printer or save as PDF. Up to 300 pages print at once.

Can I fill in or sign the PDF here?

Not in the viewer. Use Fill PDF Form for forms, Sign PDF to add a signature, or the PDF editor to add text.

How big a PDF can it open?

Up to 100 MB and 2,000 pages. Pages are drawn only when they scroll into view, so long documents stay smooth on phones.

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