It is great to see Google create a new Page Experience signal using a brilliant object-oriented approach. I think it is smart, flexible, and scalable. That said, in my opinion, the signal must have teeth in order for it to be taken seriously by site owners, developers, and SEOs. If not, it can fall by the wayside.
We need an alternative to JPEG that a) is widely supported, b) has better compression efficiency and c) has a wider feature set. We believe AV1 Image File Format (AVIF) has the potential. Using the framework we have open sourced, AVIF compression efficiency can be seen at work and compared against a whole range of image codecs that came before it.
Being able to run Google’s Lighthouse analysis suite programmatically provides a lot of advantages, especially for larger or more complex web applications. Using Lighthouse programmatically allows engineers to set up quality monitoring for sites that need more customization than straightforward applications of Lighthouse (such as Lighthouse CI) allow.
content-visibility enables the user agent to skip an element's rendering work, including layout and painting, until it is needed. Because rendering is skipped, if a large portion of your content is off-screen, leveraging the content-visibility property makes the initial user load much faster. It also allows for faster interactions with the on-screen content.
This is not a React hit piece, but rather a plea for consideration of how we do our work. Some of these performance pitfalls can be avoided if we take care to evaluate what tools make sense for the job, even for apps with a great deal of complex interactivity.
[…] if you use React or any VDOM library, you should spend some time investigating its impact on an array of devices. Get a cheap Android device and see how your app feels to use. Contrast that experience with your high-end devices.
The implementations of Back/Forward caches in popular browsers are helping to improve this experience even further - which has the benefit of significantly speeding up the web for up to 20% of navigations!
Fortunes are made and lost based on how brands thread the needle between site speed and functionality. Despite this, the Retail Systems Research (RSR)’s survey reveals the average retailer’s website is still too slow, and their mobile sites are even slower.
[A-zÀ-ú] // accepts lowercase and uppercase characters
[A-zÀ-ÿ] // as above but including letters with an umlaut (includes [ ] ^ \ × ÷)
[A-Za-zÀ-ÿ] // as above but not including [ ] ^ \
[A-Za-zÀ-ÖØ-öø-ÿ] // as above but not including [ ] ^ \ × ÷
… ~50% savings compared to JPEG, and ~20% savings compared to WebP.
… can be lossy or lossless, has the ability to use an alpha channel (transparency for UI and design elements), and even has the ability to store a series of animated frames (think lightweight high-quality animated GIFs).
… one of the first image formats to support HDR color support; offering higher brightness, color bit depth, and color gamuts.
Results show that enabling TLS 1.3 is a good idea. It offers more security and better performance for your users. It’s also worth noting that TLS 1.3 will be a requirement to use the QUIC transport layer network protocol in the future. This will pave the way to HTTP/3. And once 0-RTT becomes more prevalent, for repeat website visits the purple on the graphs displayed above will disappear completely. Even faster connections for all (at least for those that use a browser that supports it anyway).