zlib-ng VS brotli

Compare zlib-ng vs brotli and see what are their differences.


zlib replacement with optimizations for "next generation" systems. (by zlib-ng)


Brotli compression format (by google)
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zlib-ng brotli
13 25
1,437 13,111
1.6% 1.1%
9.4 8.3
7 days ago about 21 hours ago
C TypeScript
zlib License MIT License
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.


Posts with mentions or reviews of zlib-ng. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-09-24.


Posts with mentions or reviews of brotli. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2024-04-03.
  • Jpegli: A New JPEG Coding Library
    9 projects | news.ycombinator.com | 3 Apr 2024
    JPEGLI = A small JPEG

    The suffix -li is used in Swiss German dialects. It forms a diminutive of the root word, by adding -li to the end of the root word to convey the smallness of the object and to convey a sense of intimacy or endearment.

    This obviously comes out of Google Zürich.

    Other notable Google projects using Swiss German:

    https://github.com/google/gipfeli high-speed compression

    Gipfeli = Croissant

    https://github.com/google/guetzli perceptual JPEG encoder

    Guetzli = Cookie

    https://github.com/weggli-rs/weggli semantic search tool

    Weggli = Bread roll

    https://github.com/google/brotli lossless compression

    Brötli = Small bread

  • Compression efficiency with shared dictionaries in Chrome
    3 projects | news.ycombinator.com | 6 Mar 2024
    The brotli repo on github has a dictionary generator: https://github.com/google/brotli/blob/master/research/dictio...

    I have a hosted version of it on https://use-as-dictionary.com/ to make it easier to experiment with.

  • The Full-Stack development experience
    2 projects | dev.to | 12 Oct 2023
    An additional element that we can finally remove from our stack is the minification of JavaScript and CSS files. Thanks to algorithms like brotli (with a very Swiss flavour) we no longer need to minify and compress our files before distributing them. Cloudflare, Nginx, or Apache will take care of everything for us.
  • Brotli vs. GZIP vs. Zopfli: Comparing JavaScript Compression Techniques.
    1 project | dev.to | 5 Oct 2023
    As you navigate the intricate world of JavaScript compression and web development, having a trusted partner by your side can make all the difference. That's where Coding Crafts comes in. At Coding Crafts, we take pride in being a top-tier software development company in USA. Our team of experts specializes in web development, optimization, and everything in between. As the best IT company in USA, we are dedicated to delivering cutting-edge solutions that drive performance and efficiency. Our expertise extends to choosing the right compression technique for your web application, ensuring that your website performs optimally. In conclusion, the choice of JavaScript compression technique depends on various factors, including your specific goals, browser and server support, and performance requirements. Whether you opt for Brotli, GZIP, or Zopfli, Coding Crafts is here to provide the guidance and expertise you need to enhance your web application's performance and user experience. For more information on how Coding Crafts can assist you with your web development and optimization needs, contact us today. Resources "Brotli - GitHub Repository": https://github.com/google/brotli "Zopfli - Google Developers": https://developers.google.com/speed/articles/zopfli "Introduction to GZIP Compression - MDN Web Docs": https://developer.mozilla.org/en-US/docs/Web/HTTP/Overview#gzip_compression "Brotli vs. GZIP vs. Zopfli: Which Compression Method is Best?" - KeyCDN Blog: https://www.keycdn.com/blog/brotli-vs-gzip-vs-zopfli
  • Framer Update: 2x Faster Sites
    1 project | /r/framer | 2 Feb 2023
    We serve your site from a global cache location close to your visitors to make sure your site loads fast. In addition, we use an advanced HTML and text compression algorithm called Brotli. Compressed content is now cached, so we can send it directly to your visitors instead of compressing each request individually. In our tests this often improves loading speed by up to 2x, which will have a very positive impact on your Lighthouse scores like LCP. This will be especially noticeable on larger sites, so you can scale your site without worry.
  • How Much Faster Is Making a Tar Archive Without Gzip?
    8 projects | news.ycombinator.com | 10 Oct 2022
    For anyone who wants to try this, zstd -T0 uses all your threads to compress, and https://github.com/facebook/zstd has a lot more description. Brotli, https://github.com/google/brotli, is another modern format with some good features for high compression levels and Content-Encoding support in web browsers. You might also want to play with the compression level (-1 to -11 or more, zstd's --fast=n).

    One reason these modern compressors do better is not any particular mistake made defining DEFLATE in the 90s, but that new algos use a few MB of recently seen data as context instead of 32KB, and do other things impractical in the 90s but reasonable on modern hardware. The new algorithms also contain logs of smart ideas and have fine-tuned implementations, but that core difference seems important to note.

  • Troubling Launching Duckstation
    2 projects | /r/macgaming | 5 Sep 2022
    It seems to be using a lib called brotli - https://github.com/google/brotli. Can you compile from source?
  • 2000’s Winamp/WMP-ish skins?
    9 projects | /r/foobar2000 | 26 Jul 2022
    (++) Play Youtube videos and playlistsRelease date: Feb 3 20223dyd, [email protected] libraries: brotli https://github.com/google/brotli (1.0.7)
  • Stop delaying. Share knowledge on a blog built with Eleventy.
    7 projects | dev.to | 19 Jul 2022
    Alright, the minifying is done. What else? Did you know you can serve HTML, CSS and JS compressed? A lot of websites still use gzip, but there’s also Brotli. Brotli is specifically made for the web and compresses a lot better than gzip in most cases.
  • Configuring CloudFront to compress objects in AWS CDK
    2 projects | dev.to | 1 Jun 2022
    You can use CloudFront to automatically compress certain types of objects (files) and serve the compressed objects when viewers (web browsers or other clients) support them. Viewers indicate their support for compressed objects with the Accept-Encoding HTTP header. CloudFront can compress objects using the Gzip and Brotli compression formats. When the viewer supports both formats, CloudFront prefers Brotli.

What are some alternatives?

When comparing zlib-ng and brotli you can also consider the following projects:

zstd - Zstandard - Fast real-time compression algorithm

Snappy - A fast compressor/decompressor

ZLib - A massively spiffy yet delicately unobtrusive compression library.

LZ4 - Extremely Fast Compression algorithm

Minizip-ng - Fork of the popular zip manipulation library found in the zlib distribution.

libdeflate - Heavily optimized library for DEFLATE/zlib/gzip compression and decompression

LZMA - (Unofficial) Git mirror of LZMA SDK releases

uzlib - Radically unbloated DEFLATE/zlib/gzip compression/decompression library. Can decompress any gzip/zlib data, and offers simplified compressor which produces gzip-compatible output, while requiring much less resources (and providing less compression ratio of course).

haproxy - HAProxy Load Balancer's development branch (mirror of git.haproxy.org)