From Johnny’s dev blog:
…The challenge: Calculate the real percentage of unused CSS
Our goal is to create a script that will measure the percentage of unused CSS of this page. Notice that the user can interact with the page
Vitaly Friedman swings wide with a massive list of performance considerations. It’s a well-considered mix of old tactics (cutting the mustard, progressive enhancement, etc.) and newer considerations (tree shaking, prefetching, etc.). I like the inclusion of a quick wins section …
JavaScript’s Performance API is prudent, because it hands over tools to accurately measure the performance of Web pages, which, in spite of being performed since long before, never really became easy or precise enough.
That said, it isn’t as easy …
Popular image file formats such as JPG, PNG, and GIF have been around for a long time. They are relatively efficient and web developers have introduced many optimization solutions to further compress their size. However, the era of JPGs, PNGs, …
With CSS filter effects and blend modes, we can now leverage various techniques for styling images directly in the browser. However, creating aesthetic theming isn’t all that filter effects are good for. You can use filters to indicate hover state, …
The breadth and depth of knowledge to absorb in the web performance space is ridiculous. At a minimum, I’m discovering something new nearly every week. Case in point: The Save-Data header, which I discovered via a Google Developers …
It’s a great time to be a web performance aficionado, and the arrival of the Paint Timing API in Chrome 60 is proof positive of that fact. The Paint Timing API is yet another addition to the burgeoning Performance API…
HTTP/2 has been one of my areas of interest. In fact, I’ve written a few articles about it just in the last year. In one of those articles I made this unchecked assertion:
…If the user is on HTTP/2: You’ll
I was asked to do a little session on this the other day. I’d say I’m underqualified to answer the question, as is any single person. If you really needed hard answers to this question, you’d probably look to aggregate …
Content compression can be as simple as flipping a switch, but there’s a lot to consider beyond that. We pretty well know what we need to compress, but what about configuring compression? Or static versus dynamic compression? What about Brotli?…
Geutzili, Google’s new open source algorithm…
…that creates high-quality JPEG images with file sizes 35% smaller than currently available methods, enabling webmasters to create webpages that can load faster and use even less data.
I’ve seen this fairly widely reported, …
