Varnish Indicator
Varnish Indicator: Check Varnish Cache Usage
Extension stats
- webRequest
- webNavigation
- http://*/*
- https://*/*
Other platforms
Extension summary
An icon will advise if Varnish is being used, and if so, if the page was served from cache or not.
You should install this if you're a developer and want to quickly determine if a page was served from Varnish cache.
The icon has four status colors:
- Gray: the default, displayed when Varnish isn't detected.
- Blue: displays when Varnish is detected.
- Green: displays when the page was served from cache.
- Red: displays the when the page wasn't served from cache.
It looks for x-varnish and x-varnish-cache headers to detect Varnish. It can inspect both the x-varnish-cache (looking for hit and miss) and x-varnish (looking for two ids) headers to determine if a hit or miss took place.
The extension is open source and you can find more details at https://github.com/smebberson/varnish-indicator-extension.
See moreUser reviews
Nicolas DR, 2023-12-14 
Alice Coleman, 2020-07-06Extension safety
Risk impact
Varnish Indicator requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.
Risk likelihood
Varnish Indicator may not be trust-worthy. Avoid installing if possible unless you really trust this publisher.
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