Browser.cache.memory.capacity ((exclusive)) Jun 2026

: A custom limit set in Kilobytes (KB) . For example, entering 524288 would cap the memory cache at 512 MB. How to Modify It Open your browser and type about:config in the address bar. Search for browser.cache.memory.capacity . Double-click the entry and enter your desired value in KB.

The default value of browser.cache.memory.capacity varies depending on the browser and system configuration. Here are some general guidelines: Browser.cache.memory.capacity

In the world of Firefox's about:config , is the master dial for how much RAM your browser uses to keep the internet "warm." : A custom limit set in Kilobytes (KB)

: You can see how much memory is currently being used by the cache by typing about:cache into the address bar. Disk vs. Memory Cache browser.cache.memory.capacity handles RAM, browser.cache.disk.capacity controls how much space is used on your hard drive/SSD. Individual Entry Limits : The preference browser.cache.memory.max_entry_size Search for browser

Moving cache activity from the disk to the RAM can slightly reduce "wear and tear" on your Solid State Drive. How to Access and Adjust the Setting