Building the DOM faster: speculative parsing, async, defer and preload In 2017, the toolbox for making sure your web page loads fast includes everything from minification and asset optimization to caching, CDNs, code splitting and tree shaking. However, you can get big performance boosts with just a few keywords and mindful code structuring, even if you’re not yet familiar with the concepts above
HTTP Compression Brotli is an open source data compression library formally specified by IETF draft. It can be used to compress HTTPS responses sent to a browser, in place of gzip or deflate. Support for Brotli content encoding has recently landed and is now testable in Firefox Developer Edition (Firefox 44). In this post, we’ll show you an example of how to set up a simple HTTPS server that takes
You spent an entire weekend building a library, jQuery plugin, build tool, or other great piece of code you wanted to share far and wide, but after some tweets and a failed attempt to make the front page of Hacker News, your creation languished, unloved, in a GitHub repo. A common situation for many developers nowadays, but one you can avoid. As the editor of several programming newsletters, I fre
Thanks! Please check your inbox to confirm your subscription. If you haven’t previously confirmed a subscription to a Mozilla-related newsletter you may have to do so. Please check your inbox or your spam filter for an email from us. Jan! You could upload an image to a security-sensitive bug in Bugzilla to check if a user is logged in as a member of the security group, but this would change over t
This is a re-post from David Baron’s blog. This feature has landed in Mozilla Central (trunk) and only available with a Firefox Nightly Build for the time being. Last night I landed support for :-moz-any() selector grouping. This allows providing alternatives between combinators, rather than having to repeat the entire selector for once piece that’s different. For example, it allowed replacing thi
Thanks! Please check your inbox to confirm your subscription. If you haven’t previously confirmed a subscription to a Mozilla-related newsletter you may have to do so. Please check your inbox or your spam filter for an email from us. jpvincent so, will this engine be only in FF4 or it could happen sooner in a 3.6.x version ? May 11th, 2010 at 09:23 jng You can in 3.6.x, but you have to go to about
Thanks! Please check your inbox to confirm your subscription. If you haven’t previously confirmed a subscription to a Mozilla-related newsletter you may have to do so. Please check your inbox or your spam filter for an email from us. Christian Thanks for the great article! Too bad there is no support in IE yet. Btw shouldn’t the following be converted from: 1 to: 1 April 22nd, 2010 at 10:22 Christ
Firefox 3.6 allows you to do more with CSS backgrounds: you can use gradients, set a background size, and specify multiple backgrounds. Custom Background Size In Firefox 3.6, you can specify the size of a background image to scale it as a percentage of the element’s size, or to a specific length, using -moz-background-size. -moz-background-size: [, ]* Percentages. In this example, you can see the
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