My Preview keeps crashing. It no longer opens any of my PDFs and automatically crashes when i try to open a PDF. Where can i download Preview from so i can uninstall and re-install ?

You have accidentally posted your topic in the Developer Forum. In order to move it to the correct forum, are you (still) running Snow Leopard (OS X 10.6.x) or Tiger (OS X 10.4.x)?

Do a backup.

Quit Preview.

Go to Finder and select your user/home folder. With that Finder window as the front window, either select Finder/View/Show View options or go command - J. When the View options opens, check ’Show Library Folder’. That should make your user library folder visible in your user/home folder. Remove the following. You may not find them all. Restart and test.

Containers/com.apple.Preview

Containers/com.apple.quicklook.ui.helper

Preferences/com.apple.Preview.LSSharedFileList.plist

Preferences/com.apple.Preview.SandboxedPersistentURLs.LSSharedFileList.plist

Saved Application State/com.apple.Preview.savedState

Credit Linc Davis for this solution.

There is no show library folder when you open this under view on finder

In 10.6, the User Library should be visible without doing that. For 10.7 and 10.8, in Finder, hold down the option/alt key while selecting the Go menu item.

I had the same problem. Your solution worked very well for me. Thanks

You are welcome.

This worked for me as well on macOS Sierra. Thank you for the tip!

You are welcome.