Precomp
A command-line precompressor that unpacks compressed streams inside files so other compressors shrink them further.
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About Precomp
Precomp is a command-line precompressor for files that are already compressed. It finds compressed streams inside a file, such as the deflate data in ZIP, PDF or PNG files, and decompresses them so a strong general compressor can then reach a better ratio. The original file can be restored exactly.
It suits people chasing the smallest possible archive size for backups or distribution who are willing to spend extra processing time. It is written in C++ and can also be built as a DLL for use from other programs.
Strengths
- Improves compression of already-compressed files
- Restores original files bit for bit
- Can be used alongside any general compressor
Limitations
- Command line only
- Adds processing time and temporary space
- Gains depend heavily on the input file type
Details
- Pricing
- FreeFree and open source.
- License
- Open source, license not stated
- Developer
- Christian Schneider
- Platforms
- Windows, Linux, Command line
- How it runs
- Downloadable app
- Account
- Not required
- Works offline
- Yes
- Best suited for
- Squeezing extra space out of archives that contain ZIP, PDF or PNG data
- Categories
- Compression, CLI tools
- Last verified
- Added
- Provenance
- Facts checked against the developer's own pages and store listings, 1 sources on file.
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Related functionality, not necessarily a direct replacement.
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lrzip
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Kanzi
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7-Zip
The small, free archiver that opens practically every archive format and compresses better than ZIP.
