Photoshop CC 2014: Tiff thumbnails are missing in OS X Finder

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  • Updated 2 years ago
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After a lot of Keyboard trouble I have upgraded to PS CC 2014.
The keyboard trouble seems to be gone. But now, there are no thumbnails saved with the pictures. All previous Versions did, PS 2014 does not. WHY?
I'm working with pictures and can't see them in the Finder. How stupid! (16 bit files)

See screenshots with thumbs of older (PS CS 6) and new PS (CC 2014) version first one as it appears in the Mac finder, second one as shown in open Files in Photoshop CC2014. Previous versions showed a thumb left from the filename. It was clear when the image was saved, after working on the picture it was foggy, to show this version is not jet saved.
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Nicole Ottawa

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Posted 4 years ago

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Jeffrey Tranberry, Sr. Product Manager, Digital Imaging

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Not seeing this problem either.



We had a handful of customers who had damaged OS installs who were seeing something similar with OS thumbnail caches not performing/updating correctly. Doing a clean install of the OS cleared this up.
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Chris Cox

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Photoshop is saving thumbnails with the images, and MacOS can normally read TIFF images to create it's own thumbnails.
But there are some MacOS problems that sometimes cause some folders to not correctly show thumbnails or metadata for files. Adobe has been working on this issue with Apple, but the problem is pretty random and Apple has thus far not been able to narrow down a cause.
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Nicole Ottawa

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Thanks for your replies. As I tested now the problem only occures when I use PS 2014 on my 10.9 System. the OS 10.10 Photoshop works well.
But I'm still not sure to risk a 10.10 update on both machines, because my OS 10.10 sometimes does not find the other 10.9 iMac in my ethernet......
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Nicole Ottawa

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Made another Check with my OS10.10 + PS CC 2014 System:
The Ikon in the upper Frame of the Image still does not show anything. See screenshot. OS 10.10, Newest Photoshop.
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Patrik Hanuschka

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We have the same problem on 6 Mac's and find no solution.

??

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Jeffrey Tranberry, Sr. Product Manager, Digital Imaging

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What OS/version are you on? Are all 6 macs made from the same OS image?
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dennie cody

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This reply was created from a merged topic originally titled Why does PHOTOSHOP CC not save tiff files with thumbnails?.

When I save a tiff file it appears a TIFF icon not an image icon...it works fine with CS6 but not wit Photoshop CC.
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John R. Ellis, Champion

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In the original topic, Chris Cox (Sr. Computer Scientist) wrote:

Photoshop saves previews with files if you choose that in preferences (and it is on by default).

But if you are on MacOS, the Finder sometimes fails to show previews correctly.
And Windows doesn't show many thumbnails by default (needs third party extensions).
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Benedikt Zwölfer

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I'm working on two different Mac's (desktop & laptop). The desktop doesn't show TIFF-thumbnails, the Laptop shows them. Both have newest Photoshop (and both OS X 10.10.5).
It seems this manner hasn't to do with the file, but with the computer, on which it is shown.
If I copy from Desktop a file without thumb preview to the Laptop, it shows the thumbnail. (And the same the other way round, thumbnails were not displayed on the Desktop computer). It seems that the apple system "forgets" here to reckon the preview picture.
It is also independed from settings or hard drives...
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John R. Ellis, Champion

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Benedict Zwölfer wrote, "The desktop doesn't show TIFF-thumbnails, the Laptop shows them. Both have newest Photoshop (and both OS X 10.10.5). It seems this manner hasn't to do with the file, but with the computer, on which it is shown."

A likely cause is Apple's implementation of Quick Look with regards to very large files. (Quick Look is the OS X facility that generates thumbnails and previews for the Finder and other applications.) Quick Look gives up too quickly if a thumbnail isn't generated by the file-type-specific thumbnail generator within about 20 seconds. Usually that's more than enough time. But if you have very large TIFFs or PSDs, and if Finder is configured to show thumbnails larger than about 180 x 180, and especially if Finder is opening a folder with many files whose thumbnails haven't been generated before, then the Finder will generate many thumbnail requsts all at once, and it's more likely that Quick Look won't be able to generate each thumbnail within 20 seconds. This is exacerbated by a bug in Finder that makes multiple thumbnail requests per file.

So in Benedict's testing, he could be tripping over this 20-second time limit. When he copies files from one computer to another, the new computer doesn't have any previously cached thumbnails for the new files, so Quick Look has to generate them. If Quick Look takes more than 20 seconds, that will fail, and you'll see a generic TIFF icon. The time limit will more likely be triggered if there is more than one TIFF being thumbnailed. Differences in computer performance are also be a factor -- for large files, a laptop with an SSD could generate thumbnails significantly faster than a desktop with a spinning-disk hard drive, even if the desktop's CPU is faster. Files stored on network drives are also more likely to encounter this problem, since accessing a network drive is typically slower than a local attached drive.

When Finder shows a generic TIFF or PSD icon, you can usually trick it to regenerate the thumbnail by setting Finder to show very small thumbnails (e.g. 50 x 50). Then slowly increase the size to the desired size. After each increase, wait until the thumbnails fully generate before moving to the next size.
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John R. Ellis, Champion

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Another factor exacerbates Quick Look's 20-second time-limit problem. TIFFs can optionally contain thumbnails, and Photoshop CC 2015 can optionally add these thumbnails to images. But Quick Look won't read them, even though it reads similar thumbnails stored in JPEGs and PSDs. This means that Quick Look must read the entire full-resolution image to generate its thumbnails, and for larger files, that takes much longer than if it just read the thumbnail. This makes it much more likely that the 20-second time limit will be tripped.

Photoshop CC 2015 can optionally store reduced-resolution thumbnails if you select the save option Save Image Pyramid (which is off by default). But don't bother, since Quick Look won't use those stored thumbnails.
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Nicole Ottawa

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And why doesn't Quick Look read the Thumbnails within the image files? That's stupid. But I see (since OS 10) Apple goes closer to windows. More Bugs , more failures. Is Adobe in Contact with Apple about this Problem? Its no fun for photographers.
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Chris Cox

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We have several bugs open with Apple about their thumbnailing issues, on several file formats.
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Nicole Ottawa

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So there is a little hope left.....
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Kitmin Lee

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Used PS to save photos as TIFFs (as a copy) then look in Finder on OS10.10.5 on an imac 27 (2014). When looking at the thumbnails the preview image does not show on the icon. Just get the standard icon i.e. white background with "TIFF" word on it.

It appears that if you shrink the icons to the smallest size and wait wait and wait. The previews will gradually appear. I tried this on my imac and MacBook pro, same files and they all did gradually appear. So start small then enlarge the icon for speed. It's a pain in the derrier waiting. BTW my tiffs are over 100MB each, so I guess it takes time to create the preview.
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John R. Ellis, Champion

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Right, see my previous post: http://feedback.photoshop.com/photosh...
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Kitmin Lee

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thanks john, great explanation.