Dieses Plugin ist nicht mit den jüngsten 3 Hauptversionen von WordPress getestet worden. Es wird möglicherweise nicht mehr gewartet oder unterstützt und kann Kompatibilitätsprobleme haben, wenn es mit neueren Versionen von WordPress verwendet wird.

If Modified Since


If Modified Since tells search engine spiders one of two things about a webpage:

  • This webpage has not changed, no need to download again.
  • This webpage has changed so download again because there is new information.

If the requested page has not been modified since the time specified by a search engine spider, a 304 (not modified) response will be returned without any message-body.

If you have any issues using If Modified Since, find a bug or have an idea to make the plugin even better then please help to improve If Modified Since.
If you don’t report it, I can’t fix it!


  1. Upload the if-modified-since folder to the /wp-content/plugins/ directory
  2. Activate the plugin through the ‚Plugins‘ menu in WordPress
  3. No need to configure, it just works!


Do I need this when I already use a caching plugin like W3 Total Cache?

Some plugins like W3TC support the If-Modified-Since header, so there’s no need to install this plugin.

How do I know if the plugin works after installing?

You can test If Modified Since here


Deserves a 5 star

Yes, it works. thanks a lot, man. I have been trying to fix it for 3 hours now and your plugin has made it look so easy.


Simple and elegant script code. I checked – it stable works!
The Author thanks!

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Mitwirkende & Entwickler

„If Modified Since“ ist Open-Source-Software. Folgende Menschen haben an diesem Plugin mitgewirkt:


Übersetze „If Modified Since“ in deine Sprache.

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  • Beta release