precomp-cpp
p7zip
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precomp-cpp | p7zip | |
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14 | 13 | |
390 | 735 | |
- | 2.2% | |
0.0 | 0.0 | |
about 2 months ago | 7 months ago | |
C | C | |
Apache License 2.0 | - |
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precomp-cpp
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Does epub compress well?
You should look at Precomp - an apparently abandoned, but awesomely working arhiver that is dedicated to compressing those ZIP-based formats, and compresses them twice-thrice as small as LZMA2 can.
- Any suggestion for compressing a large batch of photos and videos into a single zip?
- Compression for Documents
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Putting 5,998,794 books on IPFS
You can also have a look at this packer. It compresses PDF and EPUB 2-3 times smaller than 7z at maximum settings, at half the speed. I keep all my books in it and never had a problem.
- .bin compression
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libgen currently adds around 1,300 books a day
There is an opensource archiver called precomp that is designed specifically for e-documents and compresses them 2-3 times smaller than 7z in ultra mode. It works, and I keep my e-books in it. However, it seems nobody else does, and development has stopped due to lack of interest.
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AWS switch from gzip to zstd – about 30% reduction in compressed S3 storage
There are tools like preflate [1] or precomp [2] that guarantees a bitwise identical reconstruction, of course modulo bugs.
[1] https://github.com/deus-libri/preflate
[2] https://github.com/schnaader/precomp-cpp/ (which internally makes use of preflate)
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Which compression method for archiving OS ISOs?
You may use "precomp" in order to seek and uncompress those parts. Then you can use a better compression algorithm : http://schnaader.info/precomp.php
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Is there any research as to what's the best way to compress each file type?
Precomp http://schnaader.info/precomp.php is a program which will seek compressed parts and decompress those parts in order to compress with another algorithm. This greatly improve compression ratio with the other algorithm.
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How can I perfectly recreate a PNG losslessly compressed to JXL?
This may be of help. (a255854 and d649919)
p7zip
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Ubuntu 23.04 (Lunar Lobster)
nearly every main distro I am aware of has both available. The reason you still see p7zip is because the CLI incompatibilities vs the newer 7z/7zip executables and the general licensing issues. Most users of "old p7zip" are actually using the actively maintained https://github.com/p7zip-project/p7zip which is updated, supporting unix permissions and zstd and so on.
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7-zip 22.00 – APFS, Posix TAR, high precision timestamps
Thank you for pointing this out! This is the source of much confusion. Although Arch for example uses https://github.com/jinfeihan57/p7zip which seems to be reasonably maintained?
- Ark and 7-zip
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Replace p7zip with upstream 7-Zip
Then you can compile p7zip from source: $ mkdir p7zip-git $ cd p7zip-git $ git clone https://github.com/jinfeihan57/p7zip .
- Don't Use RAR
- TIL there's a fork of the unmaintained p7zip port of 7-Zip
- I can't compress in 7zip with Ark and p7zip
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will arch replace p7zip with normal 7-zip?
April 4th was the latest release. Had some commits in May. I think it is active.
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Why is 7z so outdated?
I think the point is, the '7z' at 17.04 available in Arch Linux's repo is actually p7zip, the development of which is independent of 7-zip. So comparison of the version number is meaningless (if I am right). Also, p7zip 17.04 is released in April this year, not 2017, according to its release page
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7-Zip 21.0 alpha introduces native Linux support
this comment might clarify that.
What are some alternatives?
PDF-Writer - High performance library for creating, modiyfing and parsing PDF files in C++
7-Zip-zstd - 7-Zip with support for Brotli, Fast-LZMA2, Lizard, LZ4, LZ5 and Zstandard
clawPDF - Open Source Virtual (Network) Printer for Windows that allows you to create PDFs, OCR text, and print images, with advanced features usually available only in enterprise solutions.
NanaZip - The 7-Zip derivative intended for the modern Windows experience
xdelta - open-source binary diff, delta/differential compression tools, VCDIFF/RFC 3284 delta compression
7z - Because 7-zip source code was in a 7z archive [mirror]
mcm - MCM file compressor
libarchive - Multi-format archive and compression library
qpdf-rs - Rust bindings for QPDF C++ library
engrampa - A file archiver for MATE
libharu - libharu - free PDF library
fast-lzma2 - Fast LZMA2 Library