There are times when Acrobat Reader DC fails to open a PDF file and displays the following error message: Adobe Acrobat Reader could not open PDF because it is either ...

Google Chrome for Android will soon finally open PDF files on its own without the need for a third-party app. You can search through PDFs or annotate them before saving them to Google Drive. This ...

There are two simple ways to remove the password from a PDF file, one of which works no matter what software you have.

PDFs remain a common way to share documents because they preserve formatting across devices and platforms. Sometimes, however, you end up with several separate PDFs that would be easier to handle as a ...

Want to merge PDF files? Follow our guide for simple methods to combine PDF files on computer or mobile device, all in just a ...

Gimp is normally used to create or manipulate images files, but can also work with PDFs if you understand how it works and what it's limits are. If you’ve never used Gimp—a free image editor available ...

To know more about these above-mentioned steps, keep reading. Following that, go to the File Block Settings tab and make sure that the Open selected file types in Protected View setting is selected.

If you ever find yourself with the need to combine several PDFs into one single file, you may be immediately frustrated: It's not immediately obvious how to achieve what you're trying to do. Luckily, ...

Use Preview: Open the PDF in Preview, click File > Export, select “Reduce File Size” under Quartz Filter, and save. Use ColorSync Utility: Open the PDF in ColorSync Utility, click File > Export, ...