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Alberto_aa
Alberto_aa
Known Participant
June 15, 2017
Answered

Disable compression seems not to work

  • June 15, 2017
  • 1 reply
  • 4160 views

Hello,

I was experimenting with compression of psd and psb files but it seems not to work (Photoshop CC2017.1.1).

My aim is to monitor performances while opening/saving a 2.9GB psb on SSD and HDD.

Unfortunately disabling compression seems not to work, indeed the file saved without compression is the exact same size of the one saved with compression (already tried not maximizing compatibility).

So far my findings with compression on are as expected, the two drives have nearly the same timing:

Compression enabled1xSSD1xHDD2xSSD2xHDD3xSSD3xHDD
open (s)10.211.810.610.410.210.4
save (s)14.117.313.814.313.814.2

is there a way to effectively disable the compression?

I tried checking disable and reopen Photoshop but still not working.

Message was edited by: Alberto Bua - added PS version.

This topic has been closed for replies.
Correct answer davescm

Of course - I meant only for your testing.

Just got back to my workstation and gave compressed/uncompressed PSD a try. The compressed PSD took longer to save, so I figured it had worked.  Sure enough, it had - compressed: 565,220K; uncompressed: 960,549K. See here:

So now I must ask for further details on your testing process. Did you simply change the setting under Edit > Preferences > File Handling and save...or did you change settings, restart PS, rebuild file, save? The latter is what you should do.

I am also running PS CC 2017.1.1 (4/25/17 build) There is an update over in the CC app I've not installed yet. I'll update and try again to be sure.


I wonder if this is something in the files. I also tried this and got identical results to the original poster i.e. no change in file size. That wasin both CC2017 and CS6. I will try variations on the image mode and content later this evening.

Dave

1 reply

Benjamin Root
Benjamin Root
Legend
June 15, 2017

Why not try Tiff?

Alberto_aa
Alberto_aaAuthor
Known Participant
June 15, 2017

Because I would like the setting to works

Benjamin Root
Benjamin Root
Legend
June 15, 2017

Of course - I meant only for your testing.

Just got back to my workstation and gave compressed/uncompressed PSD a try. The compressed PSD took longer to save, so I figured it had worked.  Sure enough, it had - compressed: 565,220K; uncompressed: 960,549K. See here:

So now I must ask for further details on your testing process. Did you simply change the setting under Edit > Preferences > File Handling and save...or did you change settings, restart PS, rebuild file, save? The latter is what you should do.

I am also running PS CC 2017.1.1 (4/25/17 build) There is an update over in the CC app I've not installed yet. I'll update and try again to be sure.

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