Do they use vastly different algorithms? Are any of those tool particularly ideal for one type of scenario over another?
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Here are some differences
* Some are lossy (information is lost, like JPEG), some are lossless (perfect reproduction, like GIF)
* Some can bundle multiple files into one file (zip), others can’t
* Some are symmetric and are fast (or slow) at both compression and decompression, others are asymmetric and slow for compression but fast for decompression (mpeg)
* Some are faster but don’t compress as much, while others are slower but do better compression
* Some work best with text, or audio, or video, or still images, or random binary
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