Varnish Indicator

A web extension that shows if the current page was served by the Varnish cache.

Varnish Indicator - Edge Add-On

Varnish Indicator is a web extension for Edge that shows if the current page was served by the Varnish cache. It provides a visual icon indicating if Varnish is being used and if the page was served from cache or not. Useful for developers to quickly determine cache status.
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View on Edge Add-on Store

Add-on stats

Users: 15
2
Version: 1.0 (Last updated: 2020-07-13)
Creation date: 2020-07-13
Risk impact: High risk impact
Risk likelihood:
Low risk likelihood
Manifest version: 2
Permissions:
  • webRequest
  • webNavigation
  • http://*/*
  • https://*/*
Size: 16.22K

Ranking

# 17,253 ▲ 418
Other rankings
#1357 in Developer tools ▲ 172 #22 in cache keyword 43 ▲ 1 #104 in status keyword 7 ▲ 6 #106 in detect keyword 15 #150 in header keyword 26 ▼ 7

Other platforms

Varnish Indicator (v1.1)
3.67 (3) 94
Not available on Android
Not available on Firefox
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Add-on summary

Analyze keywords

A web extension that shows if the current page was served by the Varnish cache. 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.

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Add-on 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 has earned a fairly good reputation and likely can be trusted.

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