Why is my FF keeps on filling up memory even without doing any browsing? Because my FF started crashing a couple of days ago, I just monitored the Memory Usage on Task Manager. I opened both FF and Edge, without any browsing. Edge is maintaining memory usage at around 129MB (without browsing), but FF keeps on increasing the memory usage. About 20 mins since opening FF, FF memory usage is 3,241 MB (without any browsing at all) and it still keeps climbing as I type. I am attaching a couple of Task Manager screen shots. Edge memory usage is up on Image 4 because I am using Edge to type this message. Can someone please help? (Current FF memory usage is 3,518 MB - no browsing at all). I use Win 10 and I'm up to date. ============================ Update: (1) I refreshed FF which stopped continuous increase of memory usage (while not browsing). Also, I could see FF lines disappear from Task Manager almost immediately on exiting FF. (2) To get back "quick launch shortcuts" I copied file "Pref.js" from my old profile. Continuous memory use while idling started again. FF lines were still there on Task Manager after exiting FF. =========================== 2nd Update: (I am not a tech savy person) I had a feeling that increasing memory usage while idling on startup (without browsing at all) has something to do with Home Page, website shortcuts. I had about 29 website shortcuts on 4 rows. Did a fresh installation of FF 92.0, deleted all old profiles, and started filling website shortcuts one by one while checking idling memory usage after each shortcut. After creating a shortcut for "https://www.espncricinfo.com/", the idling memory kept on going up and up. I have now removed this website from my shortcuts and the issue appears solved. My browser settings have "Clear cookies on exit" and "Delete history on exit". I use Win 10 64-bit. Can someone please confirm my observation is correct?