Preview is very slow after Yosemite upgrade.

Try opening Disk Utility and Repair Permissions. Then restart and see if that helps speed it up.

I have the very same issue, with large pdf files is almost unusable. Preview in Mavericks handles the same files without issues.

MacBook Pro Retina 13 Late 2013

8GB RAM 2.5GHz i5

150GB free on 256GB SSD

Please help!.

PS: with Acrobat Reader app works much better but still with a much lower performance than on Mavericks.

The next choice is a restart holding the Command and R keys and then choose Install Mac OS X from Utilities on the menu bar and proceed to reinstall OS X. That should clean up anything that is broken.

Hi Ralph,

I did a clean Yosemite install. I'm also just seeing the same issue on my wife's MBA mid 2013. I am scared of upgrading the OS on my iMAC since I use it for my work.

Your pdf files scroll and and zoom smoothly? even if they are >4mb?

Let apple now about this issue:

https://www.apple.com/feedback/macosx.html

Yes, I have same issue. The preview is very slow!!!

Discussions addressing this issue:

Preview is very slow after Yosemite upgrade.

Slow PDF Viewing in Yosemite

Annoying slowness of Preview after Yosemite upgrade

It seems to be a bug popping up, also other threads are being opened:

http://forums.macrumors.com/showthread.php?t=1658901

http://forums.macrumors.com/showthread.php?t=1797348

http://forums.macrumors.com/showthread.php?p=20171190#post20171190

I Have the same issue,

also tried to reinstall and repair disk permissions!

Did not work. Also Mission control is **** slow (takes up to 2 sec to show up)

Same to me on a 2010 MBP 13'. There are various reports about the new preview.app, as it seems to be by far less smart than its precursor.

The reports include poor resolution of pdfs, slow response to commands and, which is my nightmare, the removal of the yellow auto-adjustment bars for text fields, arrows etc.

My solution: Use preview.app version 7 (current is 8). You can get this by copy&pasting it from a backup of Mavericks or earlier versions out of the applications folder. It will not be possible to replace the app in the applications folder of Yosemite, but it can be put into documents or elsewhere, the two versions can co-exist without problems in my experience.

If you do not have a backup to use, there are several versions available for downloading within the community, just search around. I would upload my old one, but I guess a german version will not help. If you need it though, let me know.

Hope that hels you!

Greetings;

"angry birds" and "cut the rope" are working perfectly on Yosemite hence apple has made a great job

i cannot read my medical pdf files however apple has different priorities due to the fact that MacBooks are professional tools...

i have tried preview 7 on yosemite however i have the same issue

when i open large pdf files i run out of ram(10 mb available) and preview stops responding

my retina macbook has 8gb ram and 256 gb hdd late 2012

i fixed the issue returning to mavericks

the issue was only with large pdf files over 400 mb.i had no issue with small pdf files

with mavericks i cannot use iCloud drive and my iPhone cannot connect with retina MBP

i have decreased my storage plan from 200 to 20 gb because i cannot use this extra gb without cloud drive.Dropbox is still working.Thanks god dropbox is not developed from apple

i liked yosemite however i must read my medical pdf files (some pdf files are more than 1,5 gb)

i am going to wait for this issue to be solved and then install yosemite.

With mavericks i never had issue with pdf files even with some pdf files larger than 3 gb(i merged some medical pdf books and created a large pdf file) preview and search are super fast!

i am disappointed nevertheless i hope that apple will address this issue.

I have downgraded to Mavericks also. 3 Months since the issue was reported and acknowledged by the developer team and still no fix for the UNIVERSAL PORTABLE DOCUMENT FORMAT!. Unbelievable I have paid 4.000 USD for a computer in which I can't view pdf files.