how to update thumbnail in JPG after editing

Started by WHitchings, February 11, 2020, 08:02:21 AM

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WHitchings

February 11, 2020, 08:02:21 AM
Newbie here...after editing a JPG, I want to force the thumbnail of the JPG to reflect the editing (color changes, horizon correction, etc.). All I can find using search is how to extract a thumbnail, not update it. Saving the JPG to a new file doesn't fix this. What's the command line look like to force ExifTool to update the jpg in place for multiple files? Thanks in advance...

Phil Harvey

#1
February 11, 2020, 08:22:02 AM
After you use an image editor to generate the thumbnail image, you can use ExifTool to embed the thumbnail:

exiftool "-thumbnailimage<=THUMB.jpg" FILE

- Phil
...where DIR is the name of a directory/folder containing the images.  On Mac/Linux/PowerShell, use single quotes (') instead of double quotes (") around arguments containing a dollar sign ($).

StarGeek

#2
February 11, 2020, 12:18:34 PM
Take a look at this SuperUser question for some ways to update the thumbnail image.
* Did you read FAQ #3 and use the command listed there?
* Please use the Code button for exiftool code/output.
 
* Please include your OS, Exiftool version, and type of file you're processing (MP4, JPG, etc).
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