jpg file incopatibility

Question

Level 1

4 points

jpg file incopatibility

After creating jpg files on my iMac21 OSX High Sierra 10.13.5, saving them to a thumb drive and opening them on my Windows-10 machine, I find '._' prepended to all file names, and Windows throwing errors saying 'It looks like we don't support this file format'. This error message persists after renaming the file to remove the '._'.

This is really strange. I checked iMac Preferences | file sharing, and iMac files _are_ being shared in 'SMB' mode, although I'm not sure that matters here(?).

Would appreciate any insights into what may be happening.

Best,

jwc

Posted on Jul 5, 2018 7:16 PM

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Answer 1

Wolfgang31 Author

Level 1

4 points

Jul 6, 2018 5:54 PM in response to Wolfgang31

It appears that I just solved this issue by changing the format option in Photoshop | Save as | JPEG Options | Format Options | Baseline Optimized [rather than Baseline ("Standard")].

Thanks,

jwc

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Answer 2

rccharles

Level 6

13,037 points

Jul 5, 2018 9:14 PM in response to Wolfgang31

File that begin with ._ are hidden files for macOS. The pictures are in the files that do not sort with ._

If you have a jpg file named lakeview, you should see:

._lakeview.jpg

lakeview.jpg

The picture is in lakeview.jpg. The ._lakeview.jpg contains Apple metadata. You can safely delete ._lakeview.jpg. There are some programs around to automate the deletion.

I'm surprised the ._lakeview.jpg files are still being created. What app did you use to create the lakeview.jpg file?

R

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Answer 3

VikingOSX

Level 10

125,368 points

Jul 6, 2018 8:54 AM in response to Wolfgang31

Plug the thumb drive back into your iMac. Run the following command from the Terminal command line. Type only bold below:

jpg file incopatibility

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