Topic: Performance Page 3

It was mid-afternoon on a Wednesday when my team started finding strange bugs in older versions of Internet Explorer. At first these appeared to be unrelated… until we noticed seemingly random chunks of style appeared to be missing entirely. What… More

Most of the time when people refer to responsive images, they are referring to inline images, not CSS images. This is because before <picture> and srcset there were no good solutions for inline responsive images. When it comes to CSS… More

So far we’ve been focused on how to make responsive images more performant. That’s essential, but at the end of the day, we still have the same old image on the page. Now, it is time for the fun stuff!… More

In Parts 3, 4 and 5, we focused on solutions for resolution switching. Now it is time to look at how to solve for art direction. The picture element—the media attribute in particular—is designed to make… More

When we last left our intrepid web developers, they had discovered the power of srcset width descriptors, only to be faced with a new challenge—the browser only knows the size of the viewport when it begins downloading images. Now, it… More

In Part 3, we looked at display density descriptors and concluded that they are great for fixed width images, but are insufficient for flexible images. Flexible images is where srcset’s width descriptors shine. Width descriptors The syntax for width… More

Ever since Apple launched a retina display on the iPhone 4, web designers have been looking for a way to handle high density displays. That is where srcset and its display density descriptors come in. Resolution switching uses srcset As… More

One of the main reasons why we need solutions for responsive images is because the <img> element is insufficient. It only has one src and we need multiple sources. Given that fact, it may be surprising that we’re going to… More

Over the last few years, we’ve written a quite a few articles about responsive images. Now that responsive images have landed in browsers, it seemed like a good time to step back and cover the basics for those… More

When you start incorporating the new responsive images standards across your site, the task can seem daunting. How do you know which standards to use and where? How will you maintain the new markup and image sizes? We have… More