thumbadder - manually add thumbnails to files

first argument needs to be the path to a file. Second argument is optional but if it is present it should be the path to an image. If no second image argument is passed, zenity is used to prompt for an image file via the filechooser dialog.

thumbadder doesn't set the Thumb::URI and Thumb::MTime attributes, and might not work with all filemanagers, only tested with thunar. https://specifications.freedesktop.org/thumbnail-spec/thumbnail-spec-latest.html

dependencies

zenity, libnotify, gdk-pixbuf-thumbnailer, curl

example

$ thumbadder ~/Documents/file.md ~/Pictures/rose.jpg
# will generate thumbnails for file.md from rose.jpg

See this video on youtube for a demo: https://youtu.be/TRzTxtFLJa4

Created by budRich@budlabs 2020