UIImageJPEGRepresentation increases image size

HI , Am picking images from device photolibrary , and compress them using UIImageJpegCompression , but some images are doubled in size then the original image , say the original image is 5mb , then the compressed image size increases to 15mb , why so??
NSData *imageData = UIImageJPEGRepresentation(imgFromPhotoLibOrCamera, .95);
increases image size?
Thanks in Advance.

Yes. I don't optimize before importing and have iWeb's option turned off. I have a tutorial on using Web Site Maestro: Old Toad's Tutorial #12 - Using Web Site Maestro to Publish to MobileMe.. It's a little dated but can help you a little. The WSM help file is very good.
You need to create a folder on your HD to publish to, I have one called WSM Input. In that folder put another folder for your site but don't have it the same name. Call it "Folder for Site_Name". Publish to that and never delete any of the files that get created in the "Folder for Site_Name". If you do than all edits and publish site changes will result in all pages getting published and WSM will not be able to optimize and upload just the changed pages. It will have to upload the entire site and you definitely want to avoid that.
WSM does a very good job, IMO, of uploading to the server. I use MobileMe and it uploads much faster than I could upload using the Finder but that shouldn't be any surprise. The Finder is the best uploading client for an iDisk.

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