08/15/2026
Here’s a little something I just dissected this morning…..
If you’ve ever noticed, browsers like Edge, Chrome, FireFox, etc. can often be seen running many, many instances in your Windows Task Manager, even if you only have 1 tab open.
Some of these are valid & useful (browser extensions you added, multiple tabs or groups). However, I find that vast majority of these are attributed to subframes related to ads appearing in your browser. While not necessarily harmful, they can slow down browser & computer performance, of course, who wants all those annoying ads??
Take a look at my screenshots where I show before & after Windows Task Manger Edge & Chrome instances, before & after Edge & Chrome browser task mangers & how to find your browser task manager.
If you go into the task manager of your browser you can see all the subframes. Browsers vary but if you find the 3 dots or lines (“the hamburger”) in the top, right of your browser, look for “More Tools”, then “Task Manager” (see screenshot). Doubleclick.net, smartadserver.net & similarly named subframes are dead giveaways.
I started using a popular browser extension called uBlock Origin, which appears to block most, if not all, of these subframes. Note that uBlock Origin only works on non-Chromium browsers (i.e. FireFox) but NOT Edge or Chrome, which are Chromium-based. For those use uBlock Origin Lite. So far they appear to perform the same & greatly reduce the number of running subframes seen in the browser task manager & Edge.exe or Chrome.exe tasks seen in Windows Task Manager.
https://ublockorigin.com/
Going to ublockorigin.com, your specific browser type (Edge, Chrome, FireFox, etc.) will be detected & will be shown for download. If desired, download & enable the respective uBlock Origin or uBlockOrigin Lite extension & then restart your browser, making sure all browser instances seen in Windows Task Manager (Chrome.exe or MSEdge.exe) have stopped. You can either wait for several minute for all of them to stop, stop them (End Task) in Windows Task Manager or just reboot your computer.
If needed, the uBlock Origin extension can be easily disabled. So far, I haven’t needed to.
Sure, this is a little complex but if you need help let me know.
-Dave