Test your wordpress url to see if it contains the Varnish Cache HTTP headers
As of April 2026, Is Varnish Working? is a WordPress varnish plugin with 10 active installations and a 0/5 rating0. It has been downloaded 1.4K+ times in total. Requires WordPress 3.0.1+ and PHP false+. Available on WordPress.org since 2021. Last updated 4 years ago — may have compatibility concerns. Top alternative: Proxy Cache Purge.
Test your wordpress url to see if it contains the Varnish Cache HTTP headers using the API available at https://isvarnishworking.co.uk
| WordPress | 3.0.1+ requiredTested up to 5.7.15 |
| PHP | false+ required |
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