There are generic compression algorithms available, including Google’s open source Brotli. Lepton, written primarily in C++, is tuned to work with images, and it cuts off 22 percent of file size ...

"I began experimenting with file-compression algorithms to see if we could shrink files to the point where they could be sent over standard phone lines," he said.

Not every compression method works for every file, and you can increase efficiency by changing the file type, codec, or program used.

Google just launched Zopfli, a new open source compression algorithm that can compress web content about three to eight percent more densely (PDF) than the standard zlib library. Because Zopfli is ...

MIT researchers could speed up file compression using an improved Fourier transform algorithm A group of MIT researchers believe they’ve found a way to speed up audio, video, and image ...

But algorithms used on the Linux command line to compress or archive user files have to be able to reproduce the original content exactly. In other words, they have to be lossless. How is that done?

This kind of algorithm is therefore only of any real use for things such as images, video, and audio. For images and photos, the archetypal lossy compression algorithm is the JPG file format.

An algorithm based on scale-specific quantization of biorthogonal wavelet coefficients was developed for the compression of high-resolution digitized mammograms.