New answers tagged resize
The easiest way I can think of is holding cmd while left clicking the bigger layer, and afterwards press C to crop to the selected area. This should make the canvas the same size as the selected layer.
When printing from Illustrator, you don't need to do that. Just select "Tile Full Pages" in scaling and Illustrator will do that for you: If you can't print from Illustrator, try printing to postscript file or PDF.
In the menu: Illustrator > Preferences > Units Set General to Pixels in the dropdown. Then, you can set all the values to pixels because that is the default.
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