DNS resolution is cheap, but it ain't free. In scenarios when it counts, the `dns-prefetch` resource hint could give you a nice, slight edge in the front-end performance game.

Get a Chrome extension reviewed a smidge more quickly by more carefully executing its client-side scripts only when they're needed.

Walking through how I used Puppeteer to programmatically collect every image loaded when a page is viewed in the browser.

Despite it's key role in modern meme culture, it may be ready to migrate from the animated GIF to a format offering some serious technical advantages -- WebP.

I’ve decided I don’t like the responsive image API in HTML, or at least the idea that we still need it as a performance tool. By "responsive," I mean "show different versions of an image based on device," using only HTML. If it’s

Depending on the site, image sitemaps can be a helpful tool in an SEO strategy, making it ultra-clear to search engines the images they can and should index. Let's explore setting one up.

Cloudflare Workers make it easy to quickly transform HTML on the fly with no third-party dependencies. Let's show how smooth the process is by building one to prepare every image URL for use with PicPerf.io.

The web has made many significant, meaningful advancements in performantly loading and rendering images over the years. Let's reminisce about a few.

With respect to performance, the format you choose for your site's images can have a huge impact on your site's performance and overall user experience.