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woogley on March 22, 2012 | parent | context | favorite | on: WebKit Limit on Retina JPG Image Display

In case you're wondering why that is ..

> JPEG images can be up to 32 megapixels due to subsampling, which allows JPEG images to decode to a size that has one sixteenth the number of pixels. JPEG images larger than 2 megapixels are subsampled—that is, decoded to a reduced size. JPEG subsampling allows the user to view images from the latest digital cameras.

Reference: https://developer.apple.com/library/IOs/#documentation/Apple...

ajasmin on March 22, 2012 [–]

Yes. libjpeg can generate scaled previews faster than decoding the whole image. Maybe that's why Apple didn't bother to implement this for png images.

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