Does opening a PDF send it to a server?

No. The reader loads the file in your browser only.

Can I open large PDFs on mobile?

Yes, within your device’s memory. Very large files may feel slower on phones than on a desktop.

No. There is no sign-up or login.

Yes. Use tools such as organize, annotate, or sign from the catalog.

Pick a PDF and open it in the reader

Drop a PDF file here

or click to browse

100% on-device - this file is never uploaded.

Choose a PDF
Select a PDF from your device. Reading happens locally in the browser.
Browse pages
Flip through pages in the on-device reader.
Jump to another tool
Open organize, compress, sign, or other tools when you need to edit.

Does opening a PDF send it to a server?: No. The reader loads the file in your browser only.
Can I open large PDFs on mobile?: Yes, within your device’s memory. Very large files may feel slower on phones than on a desktop.
Do I need an account to view a PDF?: No. There is no sign-up or login.
Can I edit after opening?: Yes. Use tools such as organize, annotate, or sign from the catalog.

PDF Tools

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