In the quest to improve website performance, Brotli has emerged as one of the most effective compression algorithms available today.
Originally developed by Google, Brotli compression is gaining widespread adoption due to its superior compression rates compared to traditional methods like Gzip.
Integrating Brotli in WordPress compression can be a game-changer for your site. Not only does it reduce the size of your files, but it also enhances page load times, providing a better user experience.
In this guide, we’ll explore how Brotli can optimize your WordPress site, making it faster and more efficient.
What Is Brotli
Brotli is an open-source generic-purpose lossless data compression algorithm. Brotli was developed in 2013 by Google under the MIT license.
As a general-purpose lossless compressor, it can effectively compress any type of file without destroying data.
You can check Broti repo evolution in Github
Where do we use the Brotli compressor?
When you open your WordPress page, the browser requests different non-compressed files like HTML, XML, CSS, SVG, Javascript, Json, Font, etc. These formats can travel uncompressed, but modern web servers and browsers can agree to exchange them in a compressed format. And the best part, the compress and decompress is done behind the scenes, between the server and the browser.
How to check if your WordPress is serving Brotli compressed files
When requesting page resources your server and browser exchange headers to agree in the compression method. The agreement has two stages:
- The browser sends a header telling the server it accepts compressed content (gzip and deflate are two compression schemes):
accept-encoding: br, gzip, deflate
This “Accept-encoding” header is just a request by the browser, not a demand. - The server sends a response if the content is compressed:
content-encoding: br
In this example, the content travels compressed with Brotli.
You can observe these exchanged headers using the Chrome Developer Tools.
This image shows you the "content-encoding: br” of our wetopi home page:
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and finely tuned to serve WordPress at lighting speed.
Is Brotli for WordPress better than Gzip?
Yes, Brotli outperforms Gzip in Speed and Compression, and in addition it’s supported by most browsers.
Brotli has a faster compression algorithm:
- It compresses and decompresses data faster than other compression algorithms.
- Compressing data using Brotli uses fewer CPU resources.
Brotli also has a better compression ratio:
There is a benchmark from the CDN Akamai, Understanding Brotli‘s Potential. In this study, Akamai took a list of the top 1000 URLs, downloaded the Html, Css, and JavaScript, and served those files compressed with both Brotli and Gzip.
The Akamai benchmark showed that the:
- Median Brotli savings was 82%
- Median Gzip savings was 78%
More specifically, Akamai found that Brotli was:
- 21% better at compressing Html
- 17% better at compressing Css
- 14% better at compressing JavaScript
Enabling Brotli compression
If you want Brotli compression, you have to enable it in your website’s server.
Enabling Brotli for your server can be a matter of minutes or hours, depending on your technology stack.
If you do not have Brotli compression with your current hosting provider and want to test it right now:
With Wetopi you get FREE Development Servers, Brotli ready,
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and finely tuned to serve WordPress at lighting speed.
There is no unique solution. But don’t worry, we have curated a few links pointing to guides that describe how to get Brotli up and running for the most popular servers:
- The official google nginx Brotli module repo with install instructions.
- How To Enable Brotli Compression In Apache by bash-prompt.net
- Beginning with LiteSpeed Web Server version 5.2, you have Brotli support enabled by default.
- In Cloudflare, Brotli compression in enabled by default on Free and Pro plans since August 15th 2024.
At wetopi, as a WordPress exclusive hosting, we know how a slow website can impact your business, and that’s why we focus on the latest technologies to improve performance. You can learn more on how to get Better WordPress performance and security with TLS 1.3 and how to Improve WordPress site speed with Cloudflare.
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