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.NET Forum / ASP.NET / General / September 2007Gzip weirdness
I tried using a custom Http Module to Gzip pages since my host wont enable GZIP via IIS. What i found was that page size actually increased - the increase came from the images. The total size of the 15 images on the page increased by about 15K with Gzip enabled using the Http Module. Anyone else experience this? The acutal size of the rendered HTML did decrease by about 50%. Ashok Padmanabhan DVM that fairly typical of trying to compress a file thats already been compressed. standalone zip makes multiple tries, and will notice nothing works, so no compression is used and only a little overhead is added to the file. with http/gzip the blocks must be ziped as they pass and every block pays the extra overhead, so the file is larger. -- bruce (sqlwork.com) > I tried using a custom Http Module to Gzip pages since my host wont enable > GZIP via IIS. What i found was that page size actually increased - the [quoted text clipped - 4 lines] > > Ashok Padmanabhan DVM So then it really isnt worth to Gzip via an HttpModule since the final overhead is actually more even though the HTML size is smaller. Right? > that fairly typical of trying to compress a file thats already been > compressed. [quoted text clipped - 15 lines] >> >> Ashok Padmanabhan DVM You are not supposed to GZip images. Gif and Jpeg are already compressed formats. And you can not compress them more. Try to configure it so it comresses only aspx, html, js, css. George. >I tried using a custom Http Module to Gzip pages since my host wont enable >GZIP via IIS. What i found was that page size actually increased - the [quoted text clipped - 4 lines] > > Ashok Padmanabhan DVM I am not deliberately zipping the images. Its just that the total image file size increases when using any Gzip HttpModule. I even tried excluding file types in web.config and that still still did not help. > You are not supposed to GZip images. Gif and Jpeg are already compressed > formats. And you can not compress them more. [quoted text clipped - 10 lines] >> >> Ashok Padmanabhan DVM Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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