When the image at the source is smaller (lower resolution) than the image on Danbooru.

This may be because the artist [[revision|revised]] the original image and replaced it with a smaller version after it was uploaded to Danbooru, or because the uploader uploaded an [[upscaled]] version of the image, or because they uploaded a larger version of the image that actually came from a different source.

h4. See also

* [[has downscaled revision]]
* [[source larger]] - the opposite case
* [[resolution mismatch]]
source smaller