What is image compression?
Image compression is the process of converting a raw image file (usually a photo) to a smaller format. JPEG and GIF are two such formats. See also file compression.
How does image compression work?
Compression can be either lossy or lossless. Lossy compression results in a smaller, but lower quality image. Lossless compression results in a larger file but the image is the same quality as the original.
Unlike file compression formats like .zip and .tar, compressed images usually don’t need to be manually decompressed to view or manipulate them.