Steve Souders:
Comparing the ASYNC and DEFER waterfalls, we see that using DEFER makes DOM Interactive fire sooner and allows rendering to proceed more quickly.
Even though <script async></script> is more commonly seen in the wild, defer is typically preferable …
InstantClick is a pretty popular JavaScript library (4,344 stars, as I type). This is the gist:
…Before visitors click on a link, they hover over that link. Between these two events, 200 ms to 300 ms usually pass by (test
If you’ve been reading at all about HTTP/2, then you’ve likely heard about server push. If not, here’s the gist of it: Server push lets you preemptively send an asset when the client requests another. …
If you’ve been working around web development for a while, you’ll know that the web has a need for speed. The truth is simple: speed matters and faster is considered better.
One “easy win” for increasing performance is using a …
You’ve been hard at work optimizing your site. You’ve already done things like lazy-loading Google Maps and been wondering if there was anything else you could do. For example, is there anything we can do to improve the loading of …
Potch:
…If you absolutely must perform tasks on the main thread (mutating the DOM or interacting with main-thread-only Web APIs), you can now request the browser provide you with a window of time in which it is safe to do
Web performance is vital, but lately I’ve felt that the topic has only been brought up by front-end developers, and only becomes a point of discussion at the end of a project. Subsequently, whenever I hear about solutions to …
We’ve all been there before: You’re browsing a website that has a ton of huge images of delicious food, or maybe that new gadget you’ve been eyeballing. These images tug at your senses, and for content authors, they’re essential in …
At De Voorhoede we try to boost front-end performance as much as possible for our clients. It is not so easy to convince every client to follow all of our performance guidelines. We try to convince them by talking to …
I recently worked on a project that was getting a ton of traffic but users were bouncing because the page load was too long at around 10 seconds. They called me in because the majority of the images on …
There’s lots of neat tricks for reducing the size of JPGs in this article by Colt McAnlis:
…With the Average webpage size now larger than the original DOOM game, you have to start asking where all the bytes are coming
