Question 1

How do I open a PDF on my phone fast?

Accepted Answer

Open this page once, tap 'Add to Home Screen' (Safari on iOS) or 'Install app' (Chrome on Android), and the viewer is one tap away from your home screen. Tap the icon, choose your PDF, and it renders instantly — no app download, no upload.

Question 2

Is this faster than the native PDF app?

Accepted Answer

For most use cases, yes — boarding passes, tickets and short documents render in well under a second once the page is cached. The native PDF app cold-starts more slowly, especially on iOS where AirPort, Mail, and Files all hand off to Quick Look.

Question 3

Are my PDFs uploaded?

Accepted Answer

No. The viewer renders entirely in your browser using pdf.js. Your file never leaves your device — even the 'Recently viewed' list stores only filenames and sizes, never the contents.

Question 4

Is there a file size limit?

Accepted Answer

No size limit on the viewer — viewing is much cheaper than converting. Very large PDFs (hundreds of MB) may take a few seconds to render the first page on mobile.

Question 5

Can I install this as an app?

Accepted Answer

Yes. The page ships a Web App Manifest, so iOS Safari shows 'Add to Home Screen' and Android Chrome offers 'Install app'. Once installed, it launches in standalone mode (no browser chrome) for a native-app feel.

Question 6

Why isn't my recent PDF re-opening on its own?

Accepted Answer

Browsers don't allow websites to read files without explicit user action — that's a privacy feature, not a bug. We remember the filename so you know which file you opened, but you have to re-pick the file to view its contents.

Question 7

Does pinch-zoom and swipe work?

Accepted Answer

Yes. Pinch-zoom uses your browser's native zoom (so it's smooth and battery-efficient). Swipe left/right pages forward/back. Plus you can use the +/- buttons or arrow keys on desktop.

Open PDFs instantly

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