By publishing Firefox 57, Mozilla has managed to compare the Google Chrome browser rate. However, the recent published results of speed comparisons in anonymous mode are no less interesting.
Let's recall briefly what the most recent version of Firefox, 57 (also known as Quantum), has bring to us. First of all, this is largely the new engine of a browser that is multithreaded, and, like the Chromium browser, can do things much faster.
Among the more negatively perceived news is the change in browser appearance (GUI Australis replaced by GUI Photon) and the definitive disabling of support for old plug-ins / extension and their replacement with new Webextensions.
In general, however, Mozilla claims that Firefox 57 / Quantum is twice as fast as the previous version of Firefox 52 (the current ESR version), and often a bit faster than Chrome when comparing page load.
Most comparative measurements logically dealt with the standard browser runtime. Mozilla has thus re-measured the performance of both browsers (Firefox and Chrome) in anonymous browsing mode. It should be borne in mind that the following results were measured by one of the creators of the tested browsers and can not be put into the fire for the absolute independence of the test methodology. This is just one thing anyone can check for themselves at any time (which can not be said about the latest CPU, GPU or camera and phone tests).
The question is why browser speeds in anonymous (private) mode should be different from normal mode speed. The answer is fairly simple: today's pages often load a lot of code from other sites, including tracking elements, that are used for later analyzes or more targeted advertising. These elements make the page quite often quite demanding, and every now and then they experience the fact that the page loads are stuck, because some code is not loaded or retrieved (typically, it can be seen in advertising systems). These are parts of pages that block browsers in anonymous mode.
Firefox has Tracking Protection enabled by default in anonymous mode from 2015. The list of elements (and pages) that the browser blocks in this mode is quite extensive and, according to Mozilla, is a balanced blocking compromise , and there are no pages that match the Do Not Track user / browser request as defined by EFF (Electronic Frontier Foundation). As a result, in anonymous browser mode, you can get to a much faster retrieval of your site. A previous study in 2015 showed that the median decrease in the reading time of the world's major news sites was 44%.
But at that time, it was about the "old Firefox" statistics. Today we have Quantum, which, combined with the above-mentioned savings from anonymous mode, marks another significant reduction in speed compared to incognito Chrome mode, because Chrome does not consider anti-tracking in anonymous mode in the way Firefox uses it.
The test was conducted by Disconnect, which is behind the list of Tracking Protection domains. Web site loading time was measured at 200 Alexa.com news sites in the Firefox Quantum (v57.0b10v57 beta) and Chrome version (v61.0.3163.100) browsers available at the moment. The test will be very outdated and its results will become more and more irrelevant in the course of days-weeks-months.
Each page has been loaded ten times. Load time was measured using the PerformanceTiming API in both browsers. Total time took time between PerformanceTiming.loadEventEnd and PerformanceTiming.navigationStart. The test was run by an automated script, all running on a Macbook Pro 2017 with 3.1GHz Intel Core i5, 16GB of memory, and macOS 10.13 as Wi-Fi 802.11ac connectivity. More specifically, the methodology in a separate text.
Firefox in the tests reached an average loading time of 3.2 seconds, while Chrome 7.7 seconds - in both cases anonymous viewing mode was used. For Chrome, it turned out that the use of anonymous mode did not lead to any acceleration. It's just a firewall protection that leads to faster page loading for Firefox.
Mozilla also looks at the measured data by optics of an independent SOASTA study, according to which when the page is loaded for more than six seconds, it leads to 70% of the exit of the user from the page. With this optics, Firefox is in an anonymous viewing mode with a higher chance that the user stays on that page, though on the other hand, at the cost of not knowing the site. In any case, Firefox has been able to load up to 95% of the measured pages in six seconds while Chrome is only two-thirds.
Naturally, nothing is essential to the results. If a user is going to visit the site, it expects some functionality there: some may be deliberately blocked (ads, mining cryptomed), but another is expected, and it may be dependent on the third party code (such as G +, Facebook, etc.). Often, the six-second landmark is not related to the third-party code, but rather to slow connectivity, DNS, or delays on the data path to the user and his browser. For this reason, visitors are also served with a web page in a staggered form so as to get at least part as soon as possible and not leave.
If the quality criterion was to be the criterion outlined in Mozilla's text from the above study, then the majority "customer" obviously does not want to do so at maximum speed and protection from watching, rather like comfort and familiar environments, rather than Chrome with Google's support, etc. This basically confirms Chrome's growing share of Chrome at the expense of Firefox (or even a bit of Internet Explorer).
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