Linked from
The 13 pages that link to Image compression, each with the reason it gives.
Fourier analysisRelated: Transform coefficients concentrate image information for compact encoding.
Digital imageRelated: Compression reduces image file size for storage and transmission.
Image resolutionRelated: Compression can degrade detail even when pixel dimensions stay unchanged.
WaveletRelated: Wavelet coefficients can concentrate image information, as in JPEG 2000 compression.
Image file formatRelated: Compression is a major source of differences in image size and fidelity.