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I'm trying to open two PDF files simultaneously, in order to compare their contents, one on the right (Win) and another on the left (Win) side of my screen.

Unfortunately I'm trying without success. I already tried to open another Foxit reader, using "open as", but nothing worked.

May I have to install Adobe and Foxit to do that?

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up vote 31 down vote accepted

There's an option in Foxit Reader's settings that allows multiple instances of the program to be opened.

Go to Tools->Preferences->Documents->Allow Multiple Instances

However In foxit reader version 7.2.2 go to Edit->Preferences->Documents->Allow Multiple Instances.

This will open single file in multiple windows not in multiple tabs. Then arrange windows vertically or horizontally to view two files simultaneously. however i have nt found the split window command like adobe reader in foxit.

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Wow, it worked. Thank you very much. – Diogo Nov 17 '11 at 13:14

In the others versions the useful funcations can be found here:

Edit->Preferences->Documents->Allow Multiple Instances

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In Foxit Reader 6.0 this option is here:

File->Preferences->Documents->Allow Multiple Instances

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Press Ctrl+K, go to Documents, tick Allow multiple instances.

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