Actually do not use these at all! Caching headers are unreliable in meta elements; for one, any web proxies between the site and the user will completely ignore them. You should always use a real HTTP header for headers such as Cache-Control and Pragma.

Defines a time interval for the document to refresh itself. Note: The value "refresh" should be used carefully, as it takes the control of a page away from the user. Using "refresh" will cause a failure in W3C's Web Content Accessibility Guidelines.

Jul 12, 2011 · Putting caching instructions into meta tags is not a good idea, because although browsers may read them, proxies won't. For that reason, they are invalid and you should send caching instructions as real HTTP headers.

4 days ago · Fortunately, developers can leverage meta HTML tags to control caching behaviour, ensuring users receive the latest content promptly. This article explores the significance of browser caching and demonstrates the use of meta HTML tags to enhance web speed.

Jul 21, 2011 · For good measure I use <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> with the chrome=1 directive so it prompts IE6, 7, 8 users to install/use Chrome Frame.

A comprehensive guide to useful HTML meta tags, with descriptions, examples, and additional resources.

Jul 9, 2025 · The http-equiv attribute of the <meta> element allows you to provide processing instructions for the browser as if the response that returned the document included certain HTTP headers. The metadata is document-level metadata that applies to the whole page.

Jun 6, 2022 · The HTML <meta> http-equiv Attribute is used to provide header information or value of the content Attribute. It can be used to simulate an HTTP Header response.

Oct 25, 2012 · A meta element with a http-equiv attribute whose value is "content-type" and which has an accompanying content attribute and value represents a character encoding declaration.

Dec 6, 2022 · Learn how to effectively disable browser caching using meta HTML tags to enhance your website performance and user experience.