Preview thumbnails

It's good to hear back from you, CSL20trew.

Let's make sure these other settings are correct as well.

With Finder open, click on View in the top menu, then select Show View Options. Make sure "Show icon preview" is selected.

Next, with Finder open, select one of the files but do not open it. Does the file preview now show as expected?

This information is found, here: macOS User Guide: Use the Preview pane in the Finder on Mac

Thanks!

Hi, CSL20trew!

Are these particular files stored inside a parent folder? If so, let's have you go up one level and select the parent file where these are kept. From there, you'll want to turn on the same settings that you did for the individual file.

• Open Finder, click on View in the top menu, then select Show View Options. Make sure "Show icon preview" is selected.

Also, are all file types affected or is it just the ones associated with Adobe Illustrator? It's possible that if these files types have Illustrator set as the default application, their previews may only show the app icon.

In order to test that, you can select one file, and change the default program it is associated with. Then select the file to see if the preview appears as expected. If it does, this could be expected with Adobe's programs.

Let us know if that works.

Hey there, CSL20trew!

Where are you trying to view the thumbnails? Is this in Finder? If yes, are these items that are in the process of being downloaded from another source?

If you're using Finder, navigate to the folder that contains the items you wish to preview. On the top menu bar, click on View > Show Preview. That should open up a small sidebar on the right side that will show you a preview of each item as you select it.

Have a great rest of your day!

Thanks for reaching back out CSL20trew,

As the issue does appear to be limited to the Adobe Illustrator files, we do recommend reaching out to Adobe support to see if tis is expected for their files.

Thanks for contacting Apple Support Communities!