Illustrator [Tutorial] Guide for remove the white areas of the artboard that are outside the original image area

Guide for remove the white areas of the artboard that are outside the original image area

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If you import the image into Illustrator, you can see that there is a white margin.

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Applying Object→Artboards→Fit to Artwork Bounds will make the white margin disappear.

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You will see the blanks on the artboard disappear and only the original area remains.