Comment 4 for bug 1842116

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Steve Stevenson (marginallosses) wrote :

It's worth noting that for some images `jpegtran` isn't able to perform its lossless transformations cleanly due to the nature of JPEG encoding. If you use the `-perfect` option it will fail on such images. You can use the `-trim` option as an alternative, but as the name of the option implies the resulting image will be slightly cropped.