Set Image - lifelike/countersheetsextension GitHub Wiki
If the template contains an external image (created using Import Bitmap in Inkscape, found in the button toolbar) it is possible to use different images on different counters generated from the effect. For instance if an external PNG or JPEG image is used for the background or symbol on some counter (or the illustration shown on a card) then each counter can use a different image.
To do this use a CSV heading matching the id attribute of the image object (found in Object Properties when right-clicking the image) in the template. The value found in that column for each counter must then be the name of a file. The full name of the file must be given including its extension (eg mypicture.png, not just mypicture).
Version 3.0: When setting images you must also set the Image Path setting when running the extension to the folder your images are in, or Inkscape will not find them (unless you use full absolute paths to all image files).
For Inkscape (or any other SVG application that will be used to open the generated countersheet) to find the images they need to be in the same folder as the saved SVG. The easiest thing to do is to keep the template SVG drawing (the one open when running the countersheetsextension) and the saved generated countersheet SVG and all the images in the same folder.
It is also possible to modify only a part of a image filename by using %name% as a part of the name. For instance if an image (using the Image Properties dialog in Inkscape) is given the filename symbol-%name%.png then values in the name column will be used to construct filenames with that pattern. A counter that has info in that column for instance will get the image with filename symbol-info.png. Unless you happen to have a file named literally symbol-%name%.png the template will contain a broken image, but this is nothing to worry about as long as the generated countersheet looks ok.