Metadata - EXIF thumbnail - add extract/replace actions

[user0]

XnViewMP 1.6.3 64bit
Windows11 (23H2), display resolution 3840x2160, win scaling 150%

Browser - metadata - EXIF thumbnail
it is only possible to rotate and rebuild/remove embedded thumbnails,
it would be handy to have extract/replace actions as well

Suggestion

metadata_exif_thumbnail_add_actions.png

• add new commands for embedded thumbnail
  • extract
    exiftool -a -b -W FOLDERNAME/%f_%t%-c.%s -preview:all FILE
    exiftool -a -b -W %f_%t%-c.%s -preview:all test_img_thumbnail.jpg
  • replace
    exiftool '-ThumbnailImage<=SOURCE_FILE' TARGET_FILE
    exiftool '-ThumbnailImage<=new_thumb.jpg' target_img.jpg
    to comply with standard, new thumbnail must be ≤64Kb
  • remove
    same as in Clean... dialog, eg
    exiftool -ThumbnailImage= FILE OR
    exiftool -ifd1:all= -ext jpg FILE
    check link for details

test image

test_img_thumbnail.jpg

Related

• FAQ
  XnViewMP - thumbnails - understanding quality/size

• suggestion
  Metadata - EXIF thumbnail - add extract/replace actions (current post)