[Gimp-user] crop to content

[geop <forums gimpusers com>]

I have scanned photographs which have a white border. I try "Crop to content"
and get the following popup:

"Cannot crop because the image is already cropped to its content."

The border is unchanged.

I thought that possibly there are some pixels on the outer edge of the border
that are confusing the crop, so I manully removed the outer edges of the border
and tried "crop to content" again. Same result.

What am I missing here?

Attachments:
* https://www.gimpusers.com/system/attachments/1353/original/two-women-300dpi-compr2-80.jpg

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geop (via www.gimpusers.com/forums)