The Brave web browser "claims to have delivered a '69x average improvement' in its ad-blocking technology using Rust in place of C++" reports ZDNet.

They cite a blog post by Brave performance researcher Dr. Andrius Aucinas and Brave's chief scientist Dr. Ben Livshits: The improvements can be experienced in its experimental developer and nightly channel releases... "We implemented the new engine in Rust as a memory-safe, performant language compilable down to native code and suitable to run within the native browser core as well as being packaged in a standalone Node.js module," the two Brave scientists said. The new engine means the Chromium-based browser can cut the average request classification time down to 5.6 microseconds, a unit of time that's equal to a millionth of one second.

Aucinas and Livshits argue that the micro-improvements in browser performance might not seem significant to end users but do translate to good things for a computer's main processor. "Although most users are unlikely to notice much of a difference in cutting the ad-blocker overheads, the 69x reduction in overheads means the device CPU has so much more time to perform other functions," the pair explain.
Their blog post notes that loading a web page today can be incredibly complex. "Since loading an average website involves 75 requests that need to be checked against tens of thousands of rules, it must also be efficient."

Slashdot's gotten over 17,000 votes in its poll about which web browser people use on their desktop. (The current leader? Firefox, with 53% of the vote, followed by Chrome with 30%.)

But Slashdot reader koavf asks an interesting follow-up question: "What's everyone's go-to Plan B browser and why?"

To start the conversation, here's how James Gelinas (a contributor at Kim Komando's tech advice site) recently reviewed the major browsers:

• He calls Chrome "a safe, speedy browser that's compatible with nearly every page on the internet" but also says that Chrome "is notorious as a resource hog, and it can drastically slow your computer down if you have too many tabs open."
  
  "Additionally, the perks of having your Google Account connected to your browser can quickly turn into downsides for the privacy-minded among is. If you're uncomfortable with your browser knowing your searching and spending behaviors, Chrome may not be the best choice for you."

• He calls Firefox "the choice for safety".
  
  "Predating Chrome by 6 years, Firefox was the top choice for savvy Netizens in the early Aughts. Although Chrome has captured a large segment of its user base, that doesn't mean the Fox is bad. In fact, Mozilla is greatly appreciated by fans and analysts for its steadfast dedication to user privacy... Speedwise, Firefox isn't a slouch either. The browser is lighter weight than Chrome and is capable of loading some websites even faster."

• He calls Apple's Safari and Microsoft Edge "the default choice...because both of these browsers come bundled with new computers."
  
  "Neither one has glaring drawbacks, but they tend to lack some of the security features and extensions found in more popular browsers. Speedwise, however, both Edge and Safari are able to gain the upper hand against their competition. When it comes to startup time and functions, the apps are extremely lightweight on your system's resources. This is because they're part of the Mac and Window's operating systems, respectively, and are optimized for performance in that environment."

Finally, he gives the Tor browser an honorable mention. ("It's still one of the best anonymous web browsers available. It's so reliable, in fact, that people living under repressive governments often turn to it for their internet needs -- installing it on covert USB sticks to use on public computers.") And he awards a "dishonorable mention" to Internet Explorer. ("Not only is the browser no longer supported by Microsoft, but it's also vulnerable to a host of malware and adware threats.")

But what do Slashdot's readers think? Putting aside your primary desktop browser -- what's your own go-to "Plan B" web browser, and why? Leave your best answers in the comments.

What's your "backup" browser?

Microsoft is testing features that block companies from tracking you across different websites in its Chromium-based Edge browser. Engadget reports: Insider beta testers with the latest Canary release on Windows can try it by enabling a browser flag (enter - "edge://flags#edge-tracking-prevention" in the address bar) then restarting. Once it's on, there are three different levels of blocking, with intentions to filter out only known malicious trackers, some third-party trackers that are used for ad targeting or all third-party tracking entirely. Microsoft demonstrated the feature at its Build 2019 event earlier this year, so even if you're not in that test group you can get a peek at it right here.

The Chromium-powered Edge browser is now available on both Windows 7 and Windows 8 for testing today. The Verge reports: The release comes two months after Chromium Edge first debuted on Windows 10, and a month after it appeared on macOS. Microsoft is releasing the daily Canary builds initially, and plans to support the weekly Dev channel "soon." You can download the installer over at Microsoft's Edge Insider site. "You will find the experience and feature set on previous versions of Windows to be largely the same as on Windows 10, including forthcoming support for Internet Explorer mode for our enterprise customers," explains a Microsoft Edge team blog post. While most features will be the same, dark mode is missing and Microsoft says there is no support for AAD sign-in.

Despite sharing a common Chromium codebase, browser makers like Brave, Opera, and Vivaldi don't have plans on crippling support for ad blocker extensions in their products -- as Google is currently planning on doing within Chrome. From a report: The three browsers makers have confirmed to ZDNet, or in public comments, of not intending to support a change to the extensions system that Google plans to add to Chromium, the open-source browser project on which Chrome, Brave, Opera, and Vivaldi are all based on.

An anonymous reader quotes a report from The Verge: Microsoft has spent years pushing developers to create special apps for the company's Universal Windows Platform (UWP), and today, it's putting the final nail in the UWP coffin. Microsoft is finally allowing game developers to bring full native Win32 games to the Microsoft Store, meaning the many games that developers publish on popular stores like Steam don't have to be rebuilt for UWP.

This is a big shift for Microsoft's Windows app store, particularly because games are one of the most popular forms of apps that are downloaded from app stores. Previously, developers were forced to publish games for Windows 10 through the Universal Windows Platform, which simply doesn't have the same level of customization that game developers have come to expect from Windows over the years. The writing has been on the wall for UWP for months now. Microsoft recently revealed its effort to switch the company's Edge browser to Chromium and away from UWP to make it available on Windows 7, Windows 8, and macOS. Microsoft's Joe Belfiore admitted in an interview with The Verge earlier this month that UWP was a "headwind" for Edge. "It's not that UWP is bad, but UWP is not a 35-year-old mature platform that a ridiculously huge amount of apps have been written to," Belfiore said at the time. Microsoft even recently put its touch-friendly UWP versions of Office on hold, preferring to focus on the web, iOS, Android, and its desktop apps instead. Office was always the centerpiece for UWP and a good example of how to build a more demanding app on Microsoft's new platform. Microsoft is finally listening to app and game developers and not trying to force UWP on them anymore. "Ultimately, this is good news for both developers and Windows users," the report concludes. "We might now start to see more games in the Microsoft Store that work how PC gamers expect them to and hopefully more apps."

Earlier this year, Google proposed changes to the open-source Chromium browser that would break content-blocking extensions, including various ad blockers. Despite the overwhelming negative feedback to the move, Google appears to be standing firm on the changes, sharing that current ad blocking capabilities will be restricted to enterprise users. 9to5Google reports: Manifest V3 comprises a major change to Chrome's extensions system, including a revamp to the permissions system and a fundamental change to the way ad blockers operate. In particular, modern ad blockers, like uBlock Origin and Ghostery, use Chrome's webRequest API to block ads before they're even downloaded. With the Manifest V3 proposal, Google deprecates the webRequest API's ability to block a particular request before it's loaded. As you would expect, power users and extension developers alike criticized Google's proposal for limiting the user's ability to browse the web as they see fit.

Now, months later, Google has responded to some of the various issues raised by the community, sharing more details on the changes to permissions and more. The most notable aspect of their response, however, is a single sentence buried in the text, clarifying their changes to ad blocking and privacy blocking extensions: "Chrome is deprecating the blocking capabilities of the webRequest API in Manifest V3, not the entire webRequest API (though blocking will still be available to enterprise deployments)." Google is essentially saying that Chrome will still have the capability to block unwanted content, but this will be restricted to only paid, enterprise users of Chrome. This is likely to allow enterprise customers to develop in-house Chrome extensions, not for ad blocking usage.

An anonymous reader quotes a report from Thurrott: Microsoft started testing a new Microsoft Edge browser based on Chromium a little while ago. The company has been releasing new canary and dev builds for the browser over the last few weeks, and the preview is actually really great. But if you watch YouTube quite a lot, you will face a new problem on the new Edge. It turns out, Google has randomly disabled the modern YouTube experience for users of the new Microsoft Edge. Users are now redirected to the old YouTube experience, which lacks the modern design as well as the dark theme for YouTube, as first spotted by Gustave Monce. And when you try to manually access the new YouTube from youtube.com/new, YouTube simply asks users to download Google Chrome, stating that the Edge browser isn't supported. Ironically, the same page states "We support the latest versions of Chrome, Firefox, Opera, Safari, and Edge." The change affects the latest versions of Microsoft Edge Canary and Dev channels. It is worth noting that the classic Microsoft Edge based on EdgeHTML continues to work fine with the modern YouTube experience.

Few home-grown Google products have been as successful as Chrome. Launched in 2008, it has more than 63% of the market and about 70% on desktop computers, according to StatCounter data. Mozilla's Firefox is far behind, while Apple's Safari is the default browser for iPhones. Microsoft's Internet Explorer and Edge browsers are punchlines. From a report: Google won by offering consumers a fast, customizable browser for free, while embracing open web standards. Now that Chrome is the clear leader, it controls how the standards are set. That's sparking concern Google is using the browser and its Chromium open-source underpinnings to elbow out online competitors and tilt entire industries in its favor. Most major browsers are now built on the Chromium software code base that Google maintains. Opera, an indie browser that's been used by techies for years, swapped its code base for Chromium in 2013. Even Microsoft is making the switch this year. That creates a snowball effect, where fewer web developers build for niche browsers, leading those browsers to switch over to Chromium to avoid getting left behind.

This leaves Chrome's competitors relying on Google employees who do most of the work to keep Chromium software code up to date. Chromium is open source, so anyone can suggest changes to it, but the majority of programmers who approve contributions are Google employees, and any major disagreements get settled by a small circle of senior Google employees. Chrome is so ascendant these days that web developers often don't bother to test their sites on competing browsers. Google services including YouTube, Docs and Gmail sometimes don't work as well on rival browsers, sending frustrated users to Chrome. Instead of just another ship slicing through the sea of the web, Chrome is becoming the ocean.

An anonymous reader shares a report: Project Campfire turned up in the Chromium world this past August. The intent was to let a Chromebook boot not just into Chrome OS but directly into another operating system such as Linux or Windows. I thought the latter was a positive outcome since it would allow Chromebooks to natively run Windows desktop apps on a Chromebook, and add value to devices. Unfortunately, the project is shutting down. Spotted in code, there are comments and code removals that make it clear Project Campfire is being deprecated.

Microsoft teased its Edge browser for macOS yesterday, but now, download links have appeared online a little early. From a report: Twitter user WalkingCat discovered official Microsoft download links to both the daily Chromium-powered Canary builds of Edge for Mac [warning: direct download link] and the weekly Dev builds [warning: direct download link]. Microsoft has been working to support Mac keyboard shortcuts, and it has been experimenting with button placement so its browser looks and feels like a Mac app. Microsoft is also adding in Touch Bar support, with options for media control sliders and the ability to switch tabs from the Touch Bar. Rounded corners for tabs are also available in the macOS Edge version, and Microsoft is planning to bring this same UI to Windows.

In a blog post detailing new features coming to Edge, Microsoft has started teasing what Edge will look like on macOS. The Verge reports: During the company's Build 2019 developer conference, Microsoft is announcing new features for Edge on Windows and teasing the upcoming macOS release. We understand that the release will be available very soon, and Mac users should be able to access both the Canary and Dev builds of Edge just like Windows. Microsoft's implementation of Chromium on Edge has so far seen good performance improvements and reliability on Windows. It's not clear if we'll see similar improvements on the macOS side versus Chrome, but at least it gives Mac users another Chromium option with some Microsoft services and sync integration. MacRumors notes that Edge "will be Microsoft's first web browser on the Mac since Internet Explorer received its last feature update nearly 16 years ago."

Microsoft is unveiling a number of new features for its upcoming Edge Chromium browser today. From a report: The first big addition is a new "IE Mode" for Edge that will allow businesses to load old sites directly in the new Edge Chromium browser, using the Internet Explorer rendering engine. Microsoft is building IE directly into Edge for this purpose, so businesses aren't forced to directly use IE for ancient internal sites. "What we're going to do is make this totally seamless," explains Microsoft's Joe Belfiore, in an interview with The Verge. Currently, the existing version of Edge will open Internet Explorer 11 on Windows 10, which has a separate interface, favorites, and doesn't work well on modern websites. This new IE mode literally loads the content within Edge, so you'd never be able to tell the difference, apart from a small IE logo on the tab that indicates that this mode has been enabled.

This new IE mode is designed exclusively for businesses, and Belfiore admits it's a big pitch to get them to use Edge Chromium instead of a combination of Chrome and Internet Explorer. "We've got a browser for you that updates regularly that will go on Windows 7 and the Mac that handles things like IT customization of the New Tab page and Microsoft Search, and IE built-in," says Belfiore. Microsoft is also allowing businesses to customize the New Tab page for Edge Chromium. This will involve a custom company logo, the option to load some sites into the top tabs, and integration with Microsoft Search and Office 365.

An anonymous reader quotes a report from VentureBeat: Google today launched Chrome 74 for Windows, Mac, Linux, Android, and iOS. The release includes support for a reduced motion media query, private class fields, feature policy improvements, and more developer features. You can update to the latest version now using Chrome's built-in updater or download it directly from google.com/chrome.

Motion sickness in the browser is a real thing. Android provides an accessibility option to reduce motion whenever possible, as shown above in the âoeremove animationsâ setting. Chrome is now taking that a step further so websites can limit motion sickness when viewing parallax scrolling, zooming, and other motion effects. Chrome 74 introduces prefers-reduced-motion (part of Media Queries Level 5) that allows websites to honor when an operating system is set to limit motion effects. This might not seem like a big deal today, but it could be very useful if websites start abusing motion effects. Check out the full changelog for more information on this release.

AmiMoJo writes: The new Chromium-based Microsoft Edge will impersonate other browsers depending on the site being visited. This is may be done for compatibility reasons, like properly rendering pages or how video will be streamed and played back. When the new Microsoft Edge starts, it will connect to config.edge.skype.com and download a JSON configuration for the browser. One section of the JSON configuration file is called EdgeDomainActions and is a series of rules that specify what browser Microsoft Edge should impersonate when visiting a particular site.

To fight phishing, Google last year announced it would require users to enable JavaScript during Google Account sign-in so that it could run attack-detecting risk assessments, and this week, the company said it'll begin to block all sign-ins from embedded browser frameworks like Chromium Embedded Framework starting in June. From a report: For the uninitiated, embedded browser frameworks enable developers to add basic web browsing functionality to their apps, and to use web languages like HTML, CSS, and JavaScript to create those apps' interface (or portions of it). They're typically cross-platform -- Chromium Embedded Framework runs on Linux, Windows, and macOS -- and they support a range of language bindings. With the change, Google is specifically targeting man in the middle (MITM) attacks, which it says are particularly difficult to spot from automation platforms like embedded browser frameworks.

An anonymous reader writes: Microsoft today released the first Edge builds based on Google's Chromium open source project, the same browser that Google's Chrome is based on. Microsoft is even adopting the same naming scheme that Google uses for Chrome development: It is debuting Canary (preview builds that will be updated daily) and Developer builds (preview builds that will be updated weekly) today. They can both be installed alongside the old Edge as well as each other. You can download these builds now from the Microsoft Edge Insider site.

x_t0ken_407 quotes BleepingComputer: A HTML standard called hyperlink auditing that allows sites to track link clicks is enabled by default on Safari, Chrome, Opera, and Microsoft Edge, but will soon have no way to disable it. As it is considered a privacy risk, browsers previously allowed you to disable this feature. Now they are going in the opposite direction.

Hyperlink auditing is an HTML standard that allows the creation of special links that ping back to a specified URL when they are clicked on. These pings are done in the form of a POST request to the specified web page that can then examine the request headers to see what page the link was clicked on.
The article concludes that "Firefox and Brave win the award" for people who want this click-tracking capability disabled -- since "only Brave and Firefox currently disable it by default, and do not appear to have any plans on enabling it in the future."

An anonymous reader quotes a report from BleepingComputer: Google is adding a new admin policy to Chrome that will automatically uninstall browser extensions that are blacklisted by administrators. Currently, administrators can enable a policy called "Configure extension installation blacklist" to create a blacklist of Chrome extension. These blacklisted extensions are added as individual extension ids, and once added, will prevent managed users from installing the associated extensions. To do this, Windows administrators can download Chrome's policy templates and add them to the Group Policy Editor. Once added, they will be able to configure various group polices.

While this policy prevents users from installing an extension, it does not do anything for those users who have already installed the extension. Due to this, administrators have been requesting a new group policy that will cause Chrome to remove any extension that is listed under the "Configure extension installation blacklist" policy. Google agrees and have started working on a new Chrome policy called "Uninstall blacklisted extensions" that will uninstall any extensions whose IDs have been blacklisted. In addition to removing the extensions, it will remove any associated local user data as well. The new policy is expected to be released with Chrome 75, which is heading to beta in May and expected to be released to the Stable channel in June.

Remember when Microsoft announced they'd be switching to Google's open source Chromium browser for developing their own Edge browser? At the time Google announced "We look forward to working with Microsoft and the web standards community to advance the open web, support user choice, and deliver great browsing experiences."

Now MSPoweruser reports Microsoft has indeed started collaborating on Chromium -- making suggestions like caret browsing and a native high-contrast mode -- and at least one of Microsoft's suggestions is already coming to Chrome. it looks like there is one feature that Chromium approved which will be making its way to Chrome soon. According to a new bug (via Techdows) filing on Chromium, Google is working on bringing text suggestions for hardware keyboard to Chrome soon. The feature will allow users to get suggestions as they type which is currently available on Windows 10 and on Microsoft Edge.

Google has just started working on the feature and has set the priority to 2 which suggests that the feature should be available sooner than later.