Hi, normally each opened web page within Safari (14.1) use a low amount of memory (around 50-60Mb). With time, it may happen that each page use up to 1Gb or more. As suggested as a fix in a video several years back (https://www.youtube.com/watch?v=WuemMEM0pnM), you may need to clean up some safari files, in particular: the Safari folder in the Library folder (~/Library), the com.apple.safari in ~/Library/Containers. To be safe, do the following: close Safari, move the ~/Library/Safari to the Desktop (e.g. ~/Desktop/Library/Safari) move the ~/Library/Containers/com.apple.safari to the Desktop (e.g. ~/Desktop/Library/Containers/com.apple.safari) reopen Safari move back your bookmarks (e.g. ~/Desktop/Library/Safari/Bookmarks.plist) to the ~/Library/Safari folder You can check in Activity Monitor that Safari and the Safari Web Content items use a reasonably low memory.