This plugin hasn’t been tested with the latest 3 major releases of WordPress. It may no longer be maintained or supported and may have compatibility issues when used with more recent versions of WordPress.

Last Modified


Add post last modified to HTTP header to enable squid or cdn to cache your wordpress web page.
Squid will not cache the page without http header field Last-Modified.



  1. Upload header-last-modified to the /wp-content/plugins/ directory
  2. Activate the plugin through the ‘Plugins’ menu in WordPress,must do it!
  3. Place header_last_modified() in /your_website_path/wp-includes/template-loader.php before “if ( $template = apply_filters( ‘template_include’, $template ) )” .
    Like this:
    if ( $template = apply_filters( ‘template_include’, $template ) )
    include( $template );


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“Last Modified” is open source software. The following people have contributed to this plugin.


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