25 Sep 2007
21 Apr 2011
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We use the Sitefinity 4.1 generated thumbnails in one of our public
controls. The thumbnail images render correctly, however, they appear to
be much larger than necessary. It seems that they are also padded with NULL
characters (binary zeroes) perfectly to 8K, 16K, 64K,128K and 256K. For
example, a 146x146 JPEG image is 128KB (see attached for reference). We
have double-checked these results by running everything through
Fiddler2 and Firebug.
For reference, the homepage of our clients' website is 2662KB in
production mode, of which 36% is Sitefinity thumbnail load (968KB in
/Sitefinity/Content/Images page currently downloads 9.9MB to the client.
We will cache the images to alleviate the bandwidth requirements,
but first-load times will still be longer than necessary. We are not sure if this qualifies as "bug" per se, but we wanted to make you aware of
what appears to be an inefficiency.