precomp-cpp
libharu
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| precomp-cpp | libharu | |
|---|---|---|
| 14 | 1 | |
| 390 | 1,679 | |
| - | 1.4% | |
| 0.0 | 4.0 | |
| 2 months ago | 19 days ago | |
| C | C | |
| Apache License 2.0 | zlib License |
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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)
libharu
What are some alternatives?
PDF-Writer - High performance library for creating, modiyfing and parsing PDF files in C++
p7zip - A new p7zip fork with additional codecs and improvements (forked from https://sourceforge.net/projects/sevenzip/ AND https://sourceforge.net/projects/p7zip/).
pdfmm - A C++ PDF manipulation library forked from PoDoFo
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.
sioyek - Sioyek is a PDF viewer with a focus on textbooks and research papers
xdelta - open-source binary diff, delta/differential compression tools, VCDIFF/RFC 3284 delta compression
PDFGen - Simple C PDF Writer/Generation library
mcm - MCM file compressor
qpdf-rs - Rust bindings for QPDF C++ library
libvips - A fast image processing library with low memory needs.