[wilburpan]

I have a folder of jpegs. The finder previewed them just fine. Some of the jpegs had the wrong orientation. I opened them in Preview and used the rotate function to set them right, and saved them. However, the icon preview is still in the old, incorrect orientation.

How can I reset/change/clear the icon preview so that the icon previews will have the new orientation?

[Barry]

after reotating the image try doing a save as, and when the mac asks to replace the image say yes. It should generate a new preview image.

[wilburpan]

Thanks for the reply -- I tried that, but it didn't work.

[TETENAL]

Log out.

[sworthy]

in a similar vein, why do I have some jpg's that display a generic preview icon, and others that show a miniature version of the image?

[lookmark]

Originally Posted by TETENAL

Log out.

Or force-quit and restart the Finder.

[reader50]

Originally Posted by sworthy

in a similar vein, why do I have some jpg's that display a generic preview icon, and others that show a miniature version of the image?

The previews had thumbnails added by whatever application generated them. You can set the Finder to show a thumbnail for all images in that folder, but that is inefficient. The Finder has to generate them on the fly each time.

Instead, you can add the thumbnail yourself. Download Pic2Icon, select all your pictures, and drag/drop them on Pic2Icon. If you change the orientation of the pic, drop it on Pic2Icon again.

[wilburpan]

Logging out, force quitting and restarting the Finder, and even rebooting did not help with my issue, which is different from the generic preview vs. thumbnail problem.

Where are the Finder generated thumbnails stored?

[TETENAL]

The Finder generated thumbnails are generated on the fly. They are not stored anywhere.

How does the image display when opened with QuickTime Player?

[wilburpan]

Hmm. This is interesting. Just for clarity, the picture was originally oriented vertically, which was wrong. I rotated the picture in Preview to a horizontal orientation and saved it. Preview now opens the file horizontally. QuickTime still opens the file vertically, as if I never saved it in the horizontal orientation.

[TETENAL]

So it seems that Preview only added rotation information without actually rotating the picture (so that JPEG rotation is lossless – which is a good thing). It seems like QuickTime does not understand this kind of rotation (that's why I asked how it's displayed in QuickTime Player). Since the Finder uses QuickTime to display image previews the icons are not rotated.

[kjbee]

OK, this is an olllllllld thread, but I seem to be having a similar problem to wilburpan's last post. my camera defaukts to horizontal. i opened up all my pics in preview to look at them, rotated the necessary ones. Now the icon preview is correct (the ones i changed to vertical show that way) and when i open them in finder the open in the correct orientation. (same result whether or not i 'save as' after rotation.) but when, for ex, i upload a pic to a website, it uploads in the original horizontal orientation. how can i fix this?

[Fusion]

You need to use a program other than Preview to rotate the images. Preview is doing lossless JPG rotation which is basically just storing rotation information in the file, the same way for instance that your camera will auto rotate files when you load them into iPhoto.

The fact that the Finder now displays them correctly just means that Apple made the Finder finally pay attention to that rotation information and display a correct icon.

Use an app like Photoshop to rotate the file and you'll be fine.

[peeb]

Why would you want to rotate the file? Surely all apps should just recognize the orientation tag?

[kjbee]

... I don't have photoshop. And try to avoid iphoto. It's just annoying to have to change orientation by opening each one in a program when youre downloading say 200 vacation pics or something. But I guess I'll have to do the import-rotate-moveoutofiphotofilemaze in iphoto.

and yes, apps recognize the file, but the main problem is when uploading the files to a picture-sharing site. they are uploaded as-is since there is no program to 'recognize' the file's orientation.

[dru]

CocoThumbX (free) has a "monitor" feature that will automatically create custom icons for various files in the folder(s) you specify. I use it to make sure every image can be seen as the file icon without having to wait for Icon Preview feature to generate thumbnails.

CocoThumbX - Mac OS X Thumbnail Creator

[dru]

Originally Posted by peeb 

Why would you want to rotate the file? Surely all apps should just recognize the orientation tag?

If only.

Elements 3 doesn't. TY Adobe.

[peeb]

That sucks.