Accessing the internet is one of the most basic tasks for any computer, but webpages in 2020 are incredibly complex so how the browser interprets the code and renders it as a viewable webpage is no simple task. Modern browsers have both a rendering or layout engine, as well as a scripting engine, and both factor into how well the browser can handle any particular task.

When the web first evolved, it was more or less a static affair, with webpages laid out in HyperText Markup Language, otherwise known as HTML, but as time passed websites became more and more complex, with it not uncommon today to run applications that would have been compiled programs several years ago. As such, browser performance is still an especially important metric for any PC user.

For 2020, the browser landscape has been shaken again, with Microsoft abandoning their closed source browser and moving over to the open source Chromium project, which as the name suggests, is the basis for the popular Google Chrome browser. After being in development for over a year, Microsoft has started updating Windows 10 PCs from Edge based on EdgeHTML to the Chromium Edge. As such, we figured it was a good chance to take stock of the browser landscape and see how some of the more popular browsers fare in terms of performance and battery life.

Although the web is based on HTML, with a standards body approving changes to the base HTML and therefore a level playing field, over the years it has never worked out quite as well as hoped, with web developers focusing on particular browsers that are popular or they are comfortable with, so over the years we have seen quite a few periods where specific browsers have been favored over others. Most readers will likely remember the days of Microsoft’s Internet Explorer 6 dominance, where websites would often only work in IE 6 thanks to heavy use of ActiveX. Internet Explorer has been a dominant feature of business and enterprise intranet sites, to the point where Microsoft is still forced to include and update their ancient browser even as they would like to move on. But that was certainly not the only time that has happened. Microsoft had the shoe on the other foot with the rise of mobile computing, where Webkit was the predominant browser thanks to Apple’s Safari browser on iOS, and Google using Webkit as the basis for Chrome as well.

What this means is that the web landscape, despite being open thanks to a standards body, has never felt as open as it could have been. One dominant platform or another has tended to be the one to drive developers to utilize new features that may not yet be ratified as web standards, or not yet supported by other browsers. So, although there is likely a group of people happy to see Microsoft abandon their own browser engine and move to Chromium, for the web it is not necessarily a net positive to see so much consolidation.

Today’s web landscape heavily favors browsers based on Chromium, which of course includes Google Chrome, but also the new Microsoft Edge, as well as Opera, Vivaldi, Brave, and quite a few more. Mozilla Firefox is the rare exception, with Mozilla developing their own browser engine in Gecko with Spidermonkey for scripting. Apple continues to offer Safari with Webkit, of which Chromium forked into Blink back in 2012.

2020 Web Browser Comparison
Name Rendering Engine Scripting Engine Version Tested
Google Chrome Blink V8 84
Microsoft Edge Classic EdgeHTML Chakra 18
Microsoft Edge Chromium Blink V8 85
Mozilla Firefox Gecko SpiderMonkey 79
Opera Blink V8 70
Internet Explorer Trident Chakra (JScript) 11
Apple Safari WebCore JavaScriptCore Not Tested

Although each browser has their own advantages in terms of features, design, and privacy, today we are going to just focus on how each browser performs. When an application is run on your desktop, most of the time it is going to be code that is written, then compiled. On the web, the code is not compiled, and instead the browser relies on its ECMAScripting engine to perform Just-In-Time (JIT) compilation. Because of this, browser performance is heavily impacted by how that scripting engine performs. We have seen advances in the scripting engine improve browser performance over time, as well as sometimes finding degradation as the engine is updated. And, of course, from time to time we have seen various vendors add specific code to deal with popular scripting benchmarks of the day.

The other side of the equation is battery life, meaning how efficient the browser and scripting engine is. The decline of the desktop has been happening for years with laptop sales continually outpacing desktops, so more battery life from your browser is likely a welcome addition.

For this test, we will be focusing on some of the more popular browsers available on the PC. As more of them consolidate around Chromium, we figured it was a good chance to look at how each browser performs, as well as look at the outgoing Microsoft Edge and even Internet Explorer to see if Microsoft has had to sacrifice performance during this transition.

Scripting Performance
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  • TelstarTOS - Thursday, September 10, 2020 - link

    I liked the old Edge for features rather than compatibility, and I totally miss the tabbed favourites/history etc. Besides that chromium Edge is much faster and overall better browser. Hoping for some extension... Reply
  • FreckledTrout - Thursday, September 10, 2020 - link

    I can feel that Chromium Edge is faster on most sites I frequent. I'm still running it and Chrome side by side but I may switch over to Edge. It now supports the plugins I use. Reply
  • Drumsticks - Thursday, September 10, 2020 - link

    It's worth pointing out that Edge fully supports installing extensions directly from the Chrome Web Store. If your extension isn't on Edge's store, you can grab it straight from Chrome. Reply
  • Jorgp2 - Thursday, September 10, 2020 - link

    Old edge had better touchscreen support, and never lost tabs when the browser or system crashed. It also felt smoother in most websites, and didn't have Chrome's fullscreen video bug.

    It is also a better Windows browser, supporting tab suspension. A tab could go from 0/0 usage to being fully enabled instantly.
    It's stupid how chrome and Firefox have to load tabs one by one when you switch to them.
    Reply
  • cashkennedy - Thursday, September 10, 2020 - link

    I also preferred the features of the old edge. But in regards to the tabs all closing: you can restore all the tabs that were recently closed by going to history, and the first entry will be something like "13 recently closed tabs" and it will reopen everything. Reply
  • TelstarTOS - Thursday, September 10, 2020 - link

    This is what I mean:
    https://answers.microsoft.com/en-us/microsoftedge/...
    Reply
  • wpcoe - Thursday, September 10, 2020 - link

    Would be interesting to see how Vivaldi stacked up with the others. Reply
  • TheWereCat - Thursday, September 10, 2020 - link

    Yeah, I'm sad they didn't include it but they also did not include Brave and others... Honestly it's not that surprising, even 6 browsers is a lot of work to test for. Reply
  • Dorkaman - Thursday, September 10, 2020 - link

    Me too. But it is based on Chromium so maybe it fares like the others. Reply
  • StormyParis - Thursday, September 10, 2020 - link

    1- I'm fairly disappointed to not see Vivaldi, it's the one I'm considering switching to.
    2- speed and memory usage are pretty much non-issues at least on desktops. I'm much, much more concerned about data leaking and tracking, which I've heard Chrome does a lot of, not sure if the other browsers on the same en gine also do.
    3- MS had their chance at browsers, they horribly abused their dominant position. It'll be a hot day in hell when I hand them over that gift again.
    Reply

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