Mac 內的 WebThumbnailExtension web content 占用大量内存，导致内存不足 Mac 无法正常使用
WebThumbnailExtension web content 占用大量内存。
使用活动监视器，强制退出后还会自动出现，而且不止出现一个程序，会有多个相同的“复制体”，每个都吃掉大量的内存（1GB以上），导致内存不足，MAC无法正常使用。
客服没有遇到这样的问题。
[经过版主编辑]
MacBook Air 13″, macOS 15.3
已经找到不少社区内反应的问题，Apple没有得到重视去解决问题，难道是小概率事件不值得去推出“补丁”？
WebThumbnailExtension : Memory usage - Apple Community
WebThumbnailExtension : Memory usage
We are seeing some weird activity where a process "WebThumbnailExtension Web Content" pops up and uses most of the Mac's Memory, it multiplies after a while, any one with the same issue and possible solution? Happens on Sequoia.
https://iboysoft.com/tips/webthumbnailextension-high-cpu-and-memory-usage.html
After upgrading to macOS Sequoia on MBP 16 inch M2 MAX with 96 GB RAM, occasionally CPU and RAM is eaten by 10 to 20 process named and starting with WebThumbnailExtension waiting is not solving the issue, I need to open activity monitor and force quit. What is the reason behind this? I have two studio displays attached to MBP in Clamshell mode with Apple Thunderbolt 4 cables.
Quite a few Mac users reported that their Mac ran slowly after upgrading to macOS Sequoia. After checking Activity Monitor, they found that the process WebThumbnailExtension uses a lot of CPU and Memory. Read on to find possible fixes for this issue.
WebThumbnailExtension causing high RAM us… - Apple Community
WebThumbnailExtension causing high RAM usage and lag on macOS Sequoia
Am I the only one experiencing this? almost 5 times a day, my mac suddenly heats and lags. Then, after checking at the activity monitor, there is this WebThumbnailExtension Web Content eating all of my ram, adding up to 6GB of swap. I did manual quit to make it normal. How can i get rid of this? It happens since my update to sequia.