This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Can Firefox clearly show if all, part, or none of a web site is loaded from local cache?

  • 2 replies
  • 1 has this problem
  • 1 view
  • Last reply by knorretje

more options

Today I was trying to debug a problem with a site which was ultimately due to a firewall change, but because Firefox was showing me some cached content the behaviour was difficult to understand. If I hadn't thought about caching I would still be scratching my head now. Is there an addon / other function that can clearly indicate on the status bar or elsewhere if any content is pulled from cache?

Today I was trying to debug a problem with a site which was ultimately due to a firewall change, but because Firefox was showing me some cached content the behaviour was difficult to understand. If I hadn't thought about caching I would still be scratching my head now. Is there an addon / other function that can clearly indicate on the status bar or elsewhere if any content is pulled from cache?

All Replies (2)

more options

Not that I know of. Maybe Firefox > Web Developer > Web Console (Net > Log), but that displays a lot of data.


You can reload web page(s) and bypass the cache.

  • Press and hold Shift and left-click the Reload button.
  • Press "Ctrl + F5" or press "Ctrl + Shift + R" (Windows,Linux)
  • Press "Cmd + Shift + R" (MAC)
more options

For debugging the loading behavior you can make a http log. In the log you can read if the cache is used. HTTP_Logging