Browsers and extensions

Mozilla juices Firefox's JavaScript with IonMonkey

Mozilla has begun building a new technology called IonMonkey into Firefox to improve its JavaScript performance.

High JavaScript performance is essential in today's hotly competitive browser market, because JavaScript is the language behind complicated Web sites and Web apps such as Google Docs and Facebook. IonMonkey has now been packaged into the "nightly" version of Firefox 18 for hardcore developers; that version is scheduled to become the mainstream version of the browser early in 2013.

IonMonkey is what's called a just-in-time compiler, or JIT for short. In olden days, JavaScript would run line by line in … Read more

IETF standardizes Opus for flexible online audio

The Internet Engineering Task Force has standardized the Opus audio compression technology as RFC 6716.

The move paves the way for much broader use of Opus for anything from playing music to online voice chats. Opus is what's called a codec because it defines how to encode and decode a stream of data for more efficient storage or transmission.

"Opus is the first state-of-the-art, free audio codec to be standardized. We think this will help us achieve wider adoption than prior royalty-free codecs," Jean-Marc Valin, a Mozilla employee and author of Opus, said in a blog post today. … Read more

How to enable Firefox's PDF reader

If you're not a fan of relying on browser add-ons and plug-ins, you'll probably want to enable a feature that can help you ditch at least one of them. Firefox now has a built-in PDF reader, and while it doesn't offer all of the same features that Adobe's version does, it's more than sufficient for most uses.

Before you get started enabling the PDF viewer, make sure you have the latest version of Firefox and you've disabled the Adobe PDF viewer.

To check the version: click the menu at the top left-hand corner and … Read more

Apache Web software overrides IE10 do-not-track setting

Apache, the most commonly used software to house Web sites, will ignore Microsoft's decision to disable ad-tracking technology by default in Internet Explorer 10.

Microsoft set IE10 and Windows 8 so that, by default, Web sites that observe the Do Not Track (DNT) standard won't track people's behavior. The move was made to "better protect user privacy," the company said.

But protecting user privacy turns out to be a thorny matter in practice -- at least when a standard has to be palatable to advertisers as well as browser makers and people surfing the Web. … Read more

Firefox 15 clamps down on memory leaks

Please note that the First Look video below is still applicable to Firefox 15, as is this Firefox How To collection, even though it features Firefox 4. A new video will be posted soon.

Review: Mozilla Firefox has undergone an enormous rebirth over the past two years. Since Firefox 4 debuted in March 2011, the browser has been hell-bent on improvements. These have come in large part on the rapid-release cycle, which sees a new version of Firefox every six weeks. Many people like them, but a vocal minority has pooh-poohed the increase in version numbers. That's hardly a … Read more

New HEVC video compression wins big over today's standard

A new compression technology represents a significant improvement over today's standard, a new study found. The result could help pave the way for video with at least four times the pixels of today's 1080p standard.

The new compression technology, called HEVC or H.265, is significantly better than today's prevailing standard video codec, called AVC or H.264, researchers from the Ecole Polytechnique Federale de Lausanne in Lausanne, Switzerland, concluded.

"The test results clearly exhibited a substantial improvement in compression performance, as compared to AVC," the researchers said. "As ultra-high definition television has recently … Read more

Firefox 15 remembers to forget old memory

As with many tech code-names, MemShrink doesn't sound particularly exciting. And yet, the memory leak-managing project at Mozilla finally sees some of its biggest changes reach the vast majority of people using Firefox with today's major update.

Mozilla expects that the new Firefox 15 for PCs (download for Windows | Mac | Linux) finally will put an end to the multitude of memory-managing issues that have plagued Firefox for years. As we noted in July when Firefox 15 went beta, the MemShrink project has spent much of its time fixing how the browser handles add-ons that contribute to memory problems. … Read more

Google adds more social integration for Chrome iOS app

Google yesterday announced the first update to its Chrome iOS app. Now available in the App Store, the 21.0.1180.77 update brings a few tweaks for iPhone and iPad users.

The biggest change is the ability to share directly from Chrome through e-mail or on Facebook, Google+, and Twitter (see our How To for more information). That follows a Google+ update last week, which allowed users to open shared Web links directly in Chrome.

Also new are improved sign-in error messages, better language detection for the welcome tour, and fixes for Web pages that load blank in Incognito … Read more

HEVC, a new weapon in codec wars, to appear in September

A trade show in September will be the coming-out party for video technology called HEVC or H.265, a new arrival in a hotly contested market for the best approach to compression.

HEVC, short for High Efficiency Video Coding, is for encoding and decoding video streams so they can be stored or transmitted more economically than today's dominant H.264, aka AVC or Advanced Video Coding. Specifically, HEVC allies say it can deliver the same quality video as H.264 with half the network bandwidth.

The codec has been in the making for years, but it's now almost … Read more

Google adds Octane to its benchmark suite

Although speed is a major factor in browser choice, many people don't want to know why their favorite browser is fast -- they just care that it is. But the standards and tests used to determine how we measure a browser's speed can be varied, so Google has set out to further define the playing field.

This doesn't appear to be a case of the tech giant stomping all over open standards, though. Octane v1 is a revamp of Google's V8 benchmark and adds five tests to the eight current ones, the company said today in … Read more