Almost exactly a year ago, CloudFlare announced a feature called Mirage. Mirage was designed to make the loading of images faster in two primary ways: 1) deliver smaller images for devices with smaller screens; and 2) "lazy load" images only when they appeared in the viewport. Both of
Optimizing Your Linux Stack for Maximum Mobile Web Performance
The following is a technical post written by Ian Applegate (@AppealingTea), a member of our Systems Engineering team, on how to optimize the Linux TCP stack for mobile connections. The article was originally published as part of the 2012 Web Performance Calendar. At CloudFlare, we spend a significant amount of
Why mobile performance is difficult
Mobile web browsing is very different, at the network level, to browsing on a desktop machine connected to the Internet. Yet both use the very same protocols, and although TCP was designed to perform well on the fixed-line Internet, it doesn't perform as well on mobile networks. This
Mobile Web Performance: Optimizing TCP Congestion Control Algorithms
Transmission Control Protocol (TCP) is one of the primary protocols of the Internet. When you request a web page, the server responds with the data that makes up that page. The data is subdivided into discrete packets of data as they are sent across the Internet from the server back
Introducing Mirage: Automatic Responsive Web Design via Intelligent Image Loading
Yesterday, we announced Polish, which helps to automatically optimize the images on your site to decrease their size and thereby increase performance. Today we're releasing something more ambitious: a system to automatically manage the loading of images in order to maximize your site's performance which we
Introducing Polish: Automatic Image Optimization
Today, the average web page has more than 85 objects (images, Javascript, CSS, etc.) that make up more than 750 KB of data. All that data needs to be downloaded when a page loads. On the average web page, more than 50% of the data is made up of images.
