Problems with re-sizing images.

[rich2005]

You must remember that Gimp works in pixels, not inches, metres, rods or microns.

See if you can follow the logic in the following. Too many screen shots for all in line and since I use linux it has to be LibreOffice (LO) rather than Word.

This is an avery template open in LO. The image is imported but as you see it is too large: https://i.imgur.com/lNJRFJk.jpg

I can resize that in LO, like this https://i.imgur.com/rpVcmpT.jpg


Somewhere there will be information on the size. If not measure it when printed https://i.imgur.com/soTROoi.jpg
That tells me I want something 0.85" https://i.imgur.com/soTROoi.jpg

Now into Gimp:
You say you do not know the pixel size. It will show at the top of the window (1)
Go into Image -> Print size and you get more details The Print size in various units (2)
The resolution of the image in pixels per inch (ppi) (3)



You can change these values, I set the width and height to the size required for the label 0.85" (1)
Note how the resolution in ppi has changed but the size of the image in pixels remains the same. (2)



Now re-export that as a png or jpeg for the label.

Now when that new image with the print size is imported into the label it (should be) the correct size. https://i.imgur.com/R8bHb2e.jpg