Quote:
Originally Posted by Frailty
Sometimes, whenever I upload a jpeg image on the internet, the image quality somehow downgrades. Any particular reason for this? Is it the bandwidth? how can I upload the image with assurance that the quality won't be lowered?
sorry for the multiple questions  |
I don't think there's anything you can do. Some websites re-encode the jpeg you upload which inevitably lowers quality. Jpeg is a rather complex format that doesn't really store colors but frequencies, I believe, which makes it very adversely affected by re-encodings (just cropping a jpeg can lead to loss in quality). To top it off plenty of sites force the quality settings of the algorithm to a very low size setting which leads to even more compression artefacts. The users really can't do much to fix this.