Also, if you need just to shrink an image file to save space, JPG is the format you want to go for. The biggest advantage of JPG files is, quite obviously, the great ratio between image compression and quality.įor example, if you’re designing a website, smaller images mean quicker loading times, and each second can make the difference. The compression algorithm known as discrete cosine transform (DCT) checks which pixels in the image are similar to the others around them, and merges them together in entities known as tiles. If you compress it to 20MB, a trained eye may spot that difference. In a nutshell, if you compress a 100MB image to a 10MB one, the loss of quality is practically negligible. Pictures are lossy compressed with a ratio that ranges between 10:1 and 20:1., but the image quality is preserved well enough (although it is always lost to some extent). This bitmap compression format is used to make huge photographic files smaller and share them between people. It’s nearly the same thing as a JPEG image. The JPG is an image file extension that stands for Joint Photographic Experts Group – the team that developed it back in 1992. JPG vs PNG – Which Image Format to use?.
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