Labels and symbols scale incorrectly when image size is increased in an ArcMap Server GET_IMAGE request

Description

The labels and symbols of an ArcMap Server GET_IMAGE request may be larger or smaller than expected.

Cause

This result occurs if:

1. The output format is an image format; for example, JPG.

2. The request includes a setting for DPI along with the image and height of the output, in pixels.

Solution or Workaround