Trim

Image trimming

Removes any single-color padding around the image if present.

The parameter does not specify the amount of border or frame to trim but rather how aggressive the trim algorithm should be. A bigger value of the parameter (e.g. 25) might trim part of the image. Typical values are between 0 and 10.

This allows you to use the same parameter values for all your images.

trim=X

If the image is resized with the width and/or height commands, the resizing is performed after the border (if present) is trimmed.

Trim gravity

When gravity=trim is set alongside trim=X (for the Crop, Fit or Cropfit operations), the focal point is defined depending on the trim result:

When the image is trimmed on all sides, gravity is set to center;
When no trim has been performed, gravity is set to smart;
If the image has been trimmed on some edges only, the gravity is set to:
- fit operation - gravity is set to the edges opposite of the trimmed ones so that the canvas is extended only on the trimmed sides;
- crop operation - gravity is set to the trimmed edges so that the image is not cropped anymore on the trimmed edges.