Strangely-corrupted thumbnails [Solved]

[slademann]

I have certain .jpg photos which have thumbnails with strange colours and bands across them. When opened, it looks OK. Unfortunately, I can't upload it as it's ~4Mb in size and there's a 2Mb limit, and if I resize it, the thumbnail looks normal. Thumbnails of the full-size look normal with Windows Explorer.

[cday]

Unfortunately, I can't upload it as it's ~4Mb in size and there's a 2Mb limit, and if I resize it, the thumbnail looks normal.

Are you able to provide a download link, for example if you have a Google account from Google Drive with the file marked as available to anyone?

[slademann]

Of course, silly me, should have thought of that myself! Here's a link that should show a couple of photos which exhibit the strangeness. https://1drv.ms/f/c/3c47221e741787c3/Ig ... A?e=eG12DX

[user0]

embedded thumbnail is corrupted, also some software simply generates a new one on the fly

you can remove/rebuild embedded thumbnail

[slademann]

Thanks everso guys, problem solved! I've found the menu item that fixes the embedded thumbnails perfectly. If it helps anyone else with a similar problem, in XnView, select the image and then select Tools->EXIF Thumbnail->EXIF thumbnail - Rebuild. It's not a show-stopper obviously, just annoying.