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I've always been drawn to working with images, and when responsive images came onto the scene, I dove deep into learning everything I could about them.
I've written extensively about Responsive images if you need a refresher, but today, let's focus on modern image formats. In particular, WebP.

WebP is a modern image format developed by Google that provides superior compression and quality compared to traditional formats like JPEG and PNG. It supports both lossy and lossless compression, transparency, and animation, making it a versatile choice for web images. WebP helps improve website performance by reducing file sizes, which leads to faster loading times and better user experience.

Since 2020, all major browsers support WebP. (Check caniuse for details). My site, this site, uses WebP exclusively for most images and although it is not a big site, I still see performance improvements.

You would think that a big upgrade like this would be a complex task but you'll be surprised to learn that enabling WebP for new and existing images in Drupal is straightforward. Let's quickly go over the steps.

1. Edit each of your image styles and add the Convert effect.
   

   Fig. 1: Selecting the Convert effect for an image style.

2. Select and add the WebP format to the image style.
   

   Fig. 2: Adding the WebP format to an image style.

That's it!

Fun fact!: WebP support was introduced to Drupal core in Drupal 9.2.0, which was released on June 16, 2021. Before this core integration, WebP support in Drupal was only available through contributed modules or custom code. The inclusion in core made the format's benefits available to all Drupal 9.2+ sites without requiring additional modules.

I did a quick and simple test to show the difference in file size when adding a typical JPEG image to an article, then converting it to WebP using the steps above. The test was done in Drupal 10.x.

Using a JPEG image on an article node, shows a file size of 289kb.

Fig. 3: Example shows using a JPEG format.

After converting the imag eto Webp by updating the image style of that image, the file size was reduced to 76kb. That's about 60% file size reduction.

Fig. 3: Example shows using a WebP format.

NOTE: This was a pretty basic comparison test. File size reduction will vary depending on original file zize, format, and other preferences on your site.

The Avif image format is also a great option with many benefits. The browser support is really good at the time of this post (See caniuse), and it's worth looking into it as an alternative to WebP, or even combining the two depending on your media needs.

It's all about the small wins. This one is pretty simple but can provide significant performance benefits. Give it a try!

• Google's page on WebP
• WebP files explained
• Mozilla's Image file type formats guide

Open source, sometimes you keep up with the notifications, and sometimes the notifications keep up with you.

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