File talk:Vernal Fall pano.jpg

From Commons:Village pump:

File:Vernal Fall pano.jpg is a progressive JPEG: the image is encoded in a way that you can get a general idea of what the image looks like before downloading all of it, but generating a thumbnail requires decompressing the entire image (and using 72 MB of RAM). File:Deepest View Ever of the Universe.jpg is a standard JPEG: you can decompress it one batch of eight lines at a time, and generating a thumbnail only takes 150 KB of RAM. --Carnildo (talk) 22:22, 28 July 2009 (UTC)