Imagiris is a picture lossless enlargement service launched not long ago. Of course, though it is called "lossless enlargement", the loss is inevitable. It just tries to reduce the loss as much as possible. Apart from providing online picture enlargement, Imagiris also provides a Firefox plug-in, which allows users to easily enlarge pictures. In order to verify its effect, I used the same picture to enlarge twice through Imagiris and PhotoZoom respectively for comparison. From the results, there was no significant difference, but the picture enlarged by Imagiris had a much smaller size.