All WordPress.com sites now support the WebP image format, serving high-quality images with shorter loading times.
Faster-Loading Images on Your Site
We always strive to make your sites run as quickly and smoothly as possible, both on the front end and under the hood. So we’re happy to announce that the WordPress.com image service, which delivers the beautiful images you use in your posts to your site’s visitors, now offers seamless support for the WebP image format.
What does this mean for you and your audience? This new feature provides size reductions of up to 34 percent for served images compared to a JPEG image of an equivalent visual quality level. Your viewers will save a lot of time loading your pages — time they can better spend enjoying the content you publish.
While WebP isn’t currently supported by all browsers (see the WebP FAQ for more details), you don’t have to worry about anything. We auto-detect which browsers your readers are using to make sure they can enjoy your travel photography, family pictures, or recent illustration work at the best possible quality. Our system will always serve your viewers the best image format at the highest speed possible.
If you’d like to learn more about this fast-loading image format, check out the following links:
- Information on the WebP image format.
- A comparative compression study between WebP and JPEG, conducted by Google.
- A page comparing JPEG and WebP images and their respective sizes (you’ll need a WebP-enabled browser to view the WebP images on this page).
- Our Photon image service has supported the WebP format since June.
Does this apply to self-hosting sites as well?
I’m pleased you have taken the time to educate folks on this topic. So many sites use design companies which work on high speed backbone connections where pages load fast. I doubt they test their sites on an average speed connection. I started designing sites in 1996 when most people had dial up connections. We HAD to edit image size or people would only stick around for seconds. We defined the size of the images and for larger ones loaded low definition copies first while the page caught up. Defining image size is very important. How annoying is it to be reading the page and it keeps changing the position of what you are reading? This is usually caused because the size of images is not defined. Another good topic for an article would be “When to use .gif images.”
Thanks for the update and also the ‘add slideshow to page’ feature.
hi, I would like to register to do Blogging 101 course. I registered sometime ago and then couldn’t do it due to time constraints. How can I register now, please?
Thanks as always for all the things, big and small, you do for us. I am a bit nuts about optimizing my images before uploading, but still I do have a few questions. 🙂 Does this mean that lossy images are no longer being compressed on upload? Are *all* our images or only images from a certain size being made available in .webp format? Are images in .webp format being dynamically served to our site visitors or are they being stored against our site media storage limit along with the lossy original? Answers much appreciated.
What would be the best way to verify that this is working on your site properly?
When viewing the source in chrome, I’m not seeing a .webp version at all (hosting is via WP VIP/assuming Photon is automatically activated there)