Roaring Bitmaps
A better compressed bitset Roaring bitmaps are compressed bitmaps. They can be hundreds of times faster. Grab one of our research papers Roaring Bitmaps on GitHub Widely used Roaring is found in Google Procella: YouTube’s SQL Engine, Apache Lucene and derivative systems such as Solr and Elasticsearch, Apache Druid, Apache Spark, Apache Hive, Apache Tez, Apache Zeppelin, Apache Doris, Apache Carbon
An Experimental Study of Bitmap Compression vs. Inverted List Compression
This document discusses Yarn and its advantages over npm. It notes that Yarn uses yarn.lock files instead of npm-shrinkwrap.json files to lock down dependency versions. Yarn is also described as being faster, able to work offline by caching dependencies, and potentially more secure than npm with features like flat mode and module folders. The document suggests Yarn may handle dependencies and devD
Essential Image Optimization
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Zstandard - Real-time data compression algorithm
Zstandard is a fast compression algorithm, providing high compression ratios. It also offers a special mode for small data, called dictionary compression. The reference library offers a very wide range of speed / compression trade-off, and is backed by an extremely fast decoder (see benchmarks below). Zstandard library is provided as open source software using a BSD license. Its format is stable a
ryg's Homepage - kkrunchy
kkrunchy: pretty good executable compression. kkrunchy is a small exe packer primarily meant for 64k intros. It's relatively useless for anything else actually, because the depacker was relatively slow in older releases (about 1-2MB per second on my machine) and is dog slow in the newest version (about 90-120k per second for typical data on my P4 2.4GHz). kkrunchy also doesn't try to pack DLLs and
Lepton image compression: saving 22% losslessly from images at 15MB/s | Dropbox Tech Blog
Lepton image compression: saving 22% losslessly from images at 15MB/s This open-source project is no longer maintained or supported by Dropbox. Please refer to Lepton’s GitHub page for more information. ~ ~ ~ We are pleased to announce the open source release of Lepton, our new streaming image compression format, under the Apache license. Lepton achieves a 22% savings reduction for existing JPEG i
FLIF - Free Lossless Image Format
UPDATE FLIF development has stopped since FLIF is superseded by FUIF and then again by JPEG XL, which is based on a combination of Pik and FUIF. For more information, see Jon's JXL info page or visit the JPEG XL Discord server. FLIF - Free Lossless Image Format FLIF is a novel lossless image format which outperforms PNG, lossless WebP, lossless BPG, lossless JPEG2000, and lossless JPEG XR in terms
FLIF - Free Lossless Image Format
UPDATE FLIF development has stopped since FLIF is superseded by FUIF and then again by JPEG XL, which is based on a combination of Pik and FUIF. For more information, see Jon's JXL info page or visit the JPEG XL Discord server. FLIF - Free Lossless Image Format FLIF is a novel lossless image format which outperforms PNG, lossless WebP, lossless BPG, lossless JPEG2000, and lossless JPEG XR in terms
Optimized gzip/zip packages, 30-50% faster – defer time.Sleep()
I have worked on optimizing the standard library deflate function, and I am happy to announce revised gzip/zip packages, that on x64 is about 30-50% faster with slightly improved compression. Project: https://github.com/klauspost/compress All packages are drop-in replacements for the standard libraries, so you can use them by simply changing imports. Compressed car by César; Musée d’Art Contempora
WebP Home
Getting started Download and install the conversion tool. Convert your JPEG collection. View your collection. What is WebP? WebP is a method of lossy compression that can be used on photographic images. The degree of compression is adjustable so a user can choose the trade-off between file size and image quality. A WebP file consists of VP8 image data, and a container based on RIFF. Webmasters, w
データ圧縮法概説 目次
最終更新日：2001年7月2日 第1章へ webmaster@snap-tck.com Copyleft (C) 2000 SNAP(Sugimoto Norio Art Production)
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