Photoshop is saving thumbnails with the images, and MacOS can normally read most of the extensions images to create its own thumbnails. But there are some MacOS problems that sometimes cause some folders to not correctly show thumbnails for files.
Try to rename the file .JPG or .PNG manually sometimes you can see the file name without extension name so that's why!
Not seeing that on my iMac. Photoshop CC version.
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Just yesterday I was looking some old files from Photoshop. The old thumbnails had no border and the new ones do. It was part of Apple's move to a new way of creating thumbnails. It did take a while for Adobe and Apple to fix the bugs.
So first thing, set up the Finder to report filename extensions on the thumbnails under Finder > Preferences
Then be sure your image files have the proper extension. A jpeg Photo should be Photo.jpg and have that extension or it won't work.
Next, use these settings in Photoshop Preferences to create thumbnails.
You then open your image and make a non-destructive change such as clicking a layer eyeball off and on.
When you save your image, you should see the new thumbnail with the border.
On occasions an image may get the wrong extension. Preview will fix that for you. Open the suspicious file in Preview, save it and it will replace the errant extension with the proper one.
Thank you for the reply, Gene!
Sadly it seems like these steps aren't working for me, on both the .jpg and .psd files, as finder is still just showing the image as a preview and keeps giving me the white border and this as thumbnail:
Still when I open the file in the old Photoshop (CS5.1), is automatically adds the thumbnail when I save the file. Either Finder is unable to read the saved thumbnail from the new photoshop (CC), or it simply isn't saved with the file at all, as opening the file in CC removes it again.....
You may try using the Photoshop in a user account which should have all the Admin rights and check if that helps.
How to create new user account on Mac OS Sierra: macOS Sierra: Set up users, guests, and groups on your Mac
I have the same problem. preview images not saved to thumbnails.
Also modified images saved as new with current date, not as modified with original created date!
Having the same issue as OP.
When saving a psd as a png it will not display the thumbnail. Tried checking all the file viewing and file handling options too. Even opening the png and saving it as a jpeg caused the new jpeg to not have an thumbnail. It is extremely frustrating and when trying to use the image for Twitter, etc, it has issues with the files with no thumbnail.
I really hope this is looked into and fixed soon.
You can try opening the png in Preview and going to File > Save. See if that solves it.
Here is a fix that worked for me, if you are a member of Amazon Prime. They let you upload an unlimited number of photos. I found that if I uploaded the jpegs whose icons were not showing the picture to Amazon Prime Photos and then downloaded them all back to my computer, the icons now showed the image picture.
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Here is the solution if you are using a Mac. Right-click on the icon. From the drop-down menu choose "Show view options". From the next drop-down menu check "show icon previews". Then go to the bottom and click to save as default.
That was the first thing that I tried (repeatedly). It doesn't work. But, thank you for the reply.
I’m sorry to hear that. It worked for me. Just in case, here are the precise details of my situation some of which you might be able to duplicate and see if it works. I am using an older (2011?) MacBook Pro running High Sierra version 10.13.3. The photos were originally taken with an iPhone and were stored in Photos on my laptop via iCloud. I dragged the images to the desktop from Photos and opened and edited them in Elements. I renamed them on the desktop by editing the caption under the icon. The icon changed from thumbnail to that generic icon sometime during this editing and renaming process. (this didn’t use to happen, maybe there was an update or something, don’t remember). I dragged the images into a folder, where they still retained the generic icon in list view. Then I went through the process I described in my post and all the generic icons changed to thumbnails even though I had only worked on one of them. This happened even before I selected the default thing at the bottom of the dropdown. I am using Elements version 11.0.
I just looked at your post again and realized that we are not using the same version of Photoshop, you are using something called CC and I’m using Elements, which is a simplified version of Photoshop. I suppose none of that advice will help, too bad.
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Actually, I am using Elements also. All new photos that I edit with the current version of Elements save with no problem and the preview picture shows up. However, the thousands of pictures I edited and saved with previous versions of Elements reverted to the generic jpeg icon and can't be changed unless I either open them again one by one in Elements and resave them or do that upload and download trick I described using Amazon Prime. I suspect the problem lies in the upgrades within the Mac OS from one version to another. Anyway, I have almost finished slogging through my photos and resaving them.
I am using CC 2018 on a 2017 27" iMac running Sierra. It worked for me.
Ok, been over a year now, and nothings seems to help. Thanks to everyone who has commented, but none of the solutions seems to work. I have now also upgraded to High Sierra, and now even my old photoshop(Cs5.1) won't save a thumbnail!