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We use ad-blockers as well, you know. We gotta keep those servers running though. Did you know that we publish useful books and run friendly conferences — crafted for pros like yourself? E.g. our upcoming SmashingConf London, dedicated to all things web performance.

Author:

Eric is a Developer Evangelist at Cloudinary and lives on beautiful Orcas Island. He loves visual communication, learning through teaching and building, and the web.

Twitter: Follow Eric Portis on Twitter

Google Profile: https://plus.google.com/+EricPortis/posts

Introducing The Website Speed Test Image Analysis Tool

Web developers spend their days writing hypertext, but, byte for byte, most of the web is composed of images. It is hard to overstate the effect that images have on the average web page’s performance; faster websites have broader reach and a higher impact. The first and most important thing you can do to improve the performance of your website’s images is figure out how to measure them.

Introducing The Website Speed Test Image Analysis Tool

Enter Website Speed Test, a free and drop-dead-simple tool that leverages our (Cloudinary’s) image smarts to let you measure, diagnose and (crucially) communicate about the image performance of any website. Better yet, it’s built on top of, and integrated in, Pat Meenan’s WebPagetest. Interested? Read on!

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Automating Art Direction With The Responsive Image Breakpoints Generator

Four years ago, Jason Grigsby asked a surprisingly difficult question: How do you pick responsive image breakpoints? A year later, he had an answer: Ideally, we’d set responsive image performance budgets to achieve "sensible jumps in file size."

Automating Art Direction With The Responsive Image Breakpoints Generator

Cloudinary built a tool that implements this idea, and the response from the community was universal: "Great! Now, what else can it do?" Today, we have an answer: art direction!

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Responsive Images Done Right: A Guide To <picture> And srcset

On Monday, we published an article on Picturefill 2.0, a perfect polyfill for responsive images. Today's article complements Tim Wright's article and explains exactly how we can use the upcoming <picture> element and srcset, with simple fallbacks for legacy browsers. There is no reason to wait for responsive images; we can actually have them very, very soon. — Ed.

Responsive Images Done Right: A Guide To <picture> And srcset

Images are some of the most important pieces of information on the web, but over the web’s 25-year history, they haven’t been very adaptable at all. Everything about them has been stubbornly fixed: their size, format and crop, all set in stone by a single src.

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