PDF Viewer General

General questions/answers about PDF Viewer

10 articles in this collection
Written by Peter Steinberger, Christoph Mantler, and Rad Azzouz

Unable to open files with ".pdf.icloud" extension

This article explains what files with the icloud file extension are and how they can be resolved to actual files

Written by Peter Steinberger
Updated over a week ago

Replies and Reviews

Add replies to annotations and write reviews directly inside a PDF.

Written by Rad Azzouz
Updated over a week ago

3rd-Party Compatibility

This article describes compatibility with 3rd-Party apps and potential issues when using them.

Written by Christoph Mantler
Updated over a week ago

Other Platforms

What about PDF Viewer on Windows, Web, Linux?

Written by Peter Steinberger
Updated over a week ago

Non-Destructive Image Editing

Edit PNG and JPG documents as if they were PDFs in PDF Viewer Pro.

Written by Rad Azzouz
Updated over a week ago

How to send files in support

If you have issues with a particular file, it helps a lot if you share it with us

Written by Peter Steinberger
Updated over a week ago

Why is PDF Viewer free?

Learn why we chose to give away PDF Viewer for free.

Written by Peter Steinberger
Updated over a week ago

What is PSPDFKit?

Learn about the PSPDFKit SDK for iOS, Android and the Web.

Written by Peter Steinberger
Updated over a week ago

PDF Viewer Pro

With the Pro subscription, PDF Viewer gets even better!

Written by Peter Steinberger
Updated over a week ago

How can I annotate PDF documents?

You can add various types of annotations to your PDFs (highlights, notes, ink drawings, images, ...)

Written by Rad Azzouz
Updated over a week ago