why are image thumbnails not displaying in finder since updating to sequoia on my m1 MacBook pro

In case this can be useful, below is AppleScript code to modify Show icon preview. The sample code can be edited and included in an Automator workflow (via the run AppleScript action) to process multiple folders.

- Pie Lover

Turn off icon preview

	tell application "Finder"
		
		open (choose folder)
		
		if (current view of front Finder window) is icon view then
			set (shows icon preview of icon view options of front Finder window) to false
		else if (current view of front Finder window) is list view or (current view of front Finder window) is flow view then
			set (shows icon preview of list view options of front Finder window) to false
		else if (current view of front Finder window) is column view then
			set (shows icon preview of column view options of front Finder window) to false
			set (shows icon of column view options of front Finder window) to false
		end if
		
		close front Finder window
		
	end tell

Turn on icon preview

	tell application "Finder"
		
		open (choose folder)
		
		if (current view of front Finder window) is icon view then
			set (shows icon preview of icon view options of front Finder window) to true
		else if (current view of front Finder window) is list view or (current view of front Finder window) is flow view then
			set (shows icon preview of list view options of front Finder window) to true
		else if (current view of front Finder window) is column view then
			set (shows icon preview of column view options of front Finder window) to true
			set (shows icon of column view options of front Finder window) to true
		end if
		
		close front Finder window
		
	end tell

Since I’m having the same problem, MacBook Pro m3 with 15.3.2 and last version of photoshop, are we sure it’s not adobe’s problem the icon preview issue? I can’t believe that apple keeps ignoring thousands of users without solving it

Thanks but this does not work for me. RAW images shot with my Canon R1 have the generic "CR3" placeholder icon. I tried doing a "Get Info" on one of the photos but where the image should be is just a black box. Fortunately I can see the images in Adobe Lightroom Classic (my primary photo editing program) and Photoshop.

Hopefully I will be able to see video that I shot with this camera this past weekend. I need to edit it in iMovie.

Jan

I have been looking into this problem for a while, and recently one of my Macs was updated from 15.3.1. to 15.3.2, and the thumbnails all suddenly came back. I still had three other Macs with no thumbnails, I updated the three of them as well, and now all of four Macs are showing thumbnails.

I'm using Sequoia 15.3.2 and I have the same issue only for some folders, and only for a few jpg pictures files. Adjusting the displayed thumbnail icon size to 80x80 or to smaller sizes has solved the issue for me... The problem seems to appear when the thumbnail icon size is 84x84 or larger ...

RyckyP wrote: "...Anyone know the process for inveigling (by flattery) Apple to fix the bug?"

Rycky ~ Use this form:

Feedback - macOS - Apple

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Make sure this View/Show View Option is set for each folder you're having problems with as shown below:

Can you me a bit more specific about what you are not seeing? Are we talking about the images that Finder displays for different parts of you Mac, like Applications, Documents, Desktop?

Clicking on one image and Get Info and see what "Open With" shows. On mine it shows Preview.

This is probably the only way. But I have a lot of files in different folders, and it's not very convenient to convert. I hoped there would be a fix in 15.0.1, but nothing has changed. Thanks anyway!

You mean they actually blocked third party thumbnail previews on purpose? What would be the rationale, if any? Safety?

This is usually a preferences updating problem.

Try deleting the com.apple.finder.plist and relaunching the the finder.

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Is there any Nikon software you can use. Like the NX Studio.app?

Mine was also fixed with 15.2