How to combine 2 images into 1 file?

Question

GIMP

Prompt:
There are 2 files. Image in PNG on a transparent background, easy to stand out. We need to collect this image into one file.
Those. Picture A - file a1.png, picture B - b1.png. It is necessary to make A be a pixel from the image border to the left, B - a pixel from A. and at the output, conditionally, 1.jpg
Is this possible? And then manually cut about 500 pictures.

Answer 1

IMHO Imagemagik will save the father of Russian democracy.

Answer 2

If I understood you correctly, then you need to do this:
1) Move the mouse button to the desired layer, press alt and right-click and only this layer will remain visible.
2) Select the rest of the layers you need;
3) On the top panel, click "Layers" (or Layers, if you have English) and select: "Merge Visible" in the list. You have one picture from all the layers you have selected. It remains to crop the image.
4) On the resulting layer, right-click and click on "Duplicate Layer". Select a new document, write a name and move on.
5) On the top panel, find "Image" and click Trimming (Trim).
6) ALT+CTRL+SHIFT+S and save your picture in the resolution you need. We did it!
It is worth noting that this is probably the most difficult option, but it is done in a minute). Slicing images in modern realities happens differently and is done faster)