Chrome file monitor addon code#
Chrome file monitor addon password#

On a more complex page – in this case the Toyota homepage – the Dashlane password manager and AdGuard AdBlocker also spend over 2 seconds on background activities.

Chrome file monitor addon code#

For example, this code can contain logic that blocks requests to certain domains.Įven when visiting a simple page, Avira Safe Shopping keeps the CPU busy for over 2 seconds. This is not caused by code running on the visited page but by the background work performed by the extension, as we'll see in the next section.Ĭhrome extensions can run code not only on the pages you visit but also on a background page that belongs to the Chrome extension. When loading the Toyota homepage an anonymous browsing proxy called anonymoX delays rendering by over 2 seconds – however this isn't surprising as traffic is routed through another server.Īvira Browser Safety delays rendering by 369 milliseconds. 小插件 delays rendering times by 342 milliseconds and a sales tool called Outreach Everywhere adds a 251 millisecond delay.Looking at the 1000 most popular extensions shows that a social media tool called 壹伴 On an ecommerce website, Honey also delays the appearance of page content by almost half a second.Īvira Browser Safety and some ad blockers can also delay when page content starts to appear.

While the Apple homepage normally renders in under a second, with Dark Reader installed it takes almost 4 seconds.

The chart uses the First Contentful Paint metric to measure this. However, other extensions like Clever, Lastpass, and DuckDuckGo Privacy Essentials run code as soon as the page starts loading, delaying the point at which the user is first able to view page content. Several extensions like Loom and Ghostery run a large amount of code without impacting when the page starts rendering. But if the processing happens after the initial page load the impact on user experience may not be that big. On a small website it has little performance impact (adding about 10 ms of CPU time), but on a larger page like it adds 9.7 seconds of CPU activity.ĬPU activity can cause a page to hang and become unresponsive, as well as increasing battery consumption. Substitutions is a Chrome extension that automatically replaces certain words on a page. Ubersuggest, a marketing tool with over 200,000 users, adds 1.6 seconds of CPU activity to every page. Let's look at some other extensions that are less popular, but still have more than 100,000 installs each. Even without any extensions installed, uses over 3 seconds of CPU time, so it's harder to separate random variation from the impact of an extension. This chart only shows the 5 extensions with the biggest impact on performance. As a result the page loads much more slowly, as we'll see later on.Ĭoupon code finder Honey also significantly impacts site speed on ecommerce websites, adding 825 ms of CPU processing time.įinally, when running the tests on the Toyota homepage, we can see that Norton Password increases CPU activity the most, adding about 1 second of CPU time. When testing extensions on the Apple homepage we can see that a dark mode extension called Dark Reader spends 25 seconds analyzing and adjusting images so that they better fit into a dark theme. The results above were collected on a very simple website and generally represent the minimum per-page performance impact of a Chrome extension. The speed impact of a browser extension depends on the website opened by the user. While a few hundred milliseconds may not sound like much, if multiple extensions are installed this can have a significant impact on user experience. If you try to interact with the page during this time the response will feel sluggish.Įach of these browser extensions has been installed over a million times. It spends 368 milliseconds running code on every page you open. Many Chrome extensions have the ability to run extra code on every page you open, although well-built ones only run code where necessary.Īmong the 100 most popular Chrome extensions, Evernote Web Clipper has the biggest negative impact on performance.

How do these browser performance results compare to last year's?.

What happens if I have more than one extension installed?.

How do ad blockers and privacy tools affect browser performance?.

Want to find out if any of the extensions you use are slowing you down? Look up the extension here.

On ad-heavy websites, ad blockers and privacy tools can greatly improve performanceĪs the performance impact varies between different websites, five different pages were included in the test: a simple test page,, , and news articles by The Independent and the Pittsburgh Post-Gazette.

Popular extensions like Honey, Evernote Web Clipper, and Avira Browser Safety can have a significant negative impact on website speed.

This report investigates how 1000 of the most popular Chrome extensions impact browser performance and end-user experience.