A free PDF viewer for Windows that opens before you blink

Most free PDF readers make you wait: a splash screen, an update nag, a banner ad, sometimes a sign-in wall. AllofPDF renders the first page while the rest of the file is still loading, so large reports and scanned contracts appear almost instantly. It is free, has no ads, needs no account and never uploads your files.

Download for Windows

Also available for Windows ARM64 Portable ZIP (no install)

Version: Latest stable release
Size
SHA-256
Signature: Signed with Microsoft Azure Trusted Signing

How to open and read PDFs faster

Download and install AllofPDF, or unzip the portable version if you cannot install software.
Accept the one-click prompt to make it your default PDF app, so every PDF opens in it on double-click.
Open several files as tabs, jump around with page thumbnails and search the whole document with Ctrl F.
Switch on reading mode or read-aloud for long documents, and pin the window with always-on-top while you work elsewhere.

Why people switch to AllofPDF

First page first

Pages are rendered on demand, so a 500-page manual opens as quickly as a one-page invoice and scrolling stays smooth.

Nothing in the way

No banners, no upgrade pop-ups, no bundled toolbars in the installer and no account to create. The document is the brightest thing on screen.

Built for Windows

Recent files appear in the taskbar Jump List, the app can minimize to the tray and the Windows share sheet sends a PDF to Mail, Teams or nearby devices.

Tips for heavy PDF readers

Press Ctrl K to open the command palette and type what you want, such as a page number, a recent file or an action. Use reading mode to hide the toolbar and side panels, and read-aloud to listen to a report while you take notes. If a file looks suspicious, Document X-Ray lists hidden layers, embedded files and JavaScript before you trust it.

Frequently asked questions

Is this PDF viewer really free and ad-free?

Yes. Viewing, searching, annotating and every other core feature is free, with no trial period, no watermark and no advertising anywhere in the app.

Can it replace Adobe Acrobat Reader as my default PDF app?

Yes. After installation the app offers a one-click shortcut to the Windows default-apps settings, so double-clicking any PDF opens AllofPDF instead.

Does it work offline?

Yes. Opening, reading and editing PDFs works without an internet connection. Only the optional Cloud AI features need to be online.

Get AllofPDF, it's free

Windows 10 & 11 · x64 & ARM64 · Installer or portable ZIP