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Preparing meta and head tags can be confusing, especially when trying to support the major search engines. Here, I try to layout the most common and basic tags that you should never leave out. Define keywords for search engines:

<meta name="keywords" content="HTML, DHTML, CSS, XML, XHTML, JavaScript, VBScript" /> 

Define a description of your web page:

<meta name="description" content="Free Web tutorials on HTML, CSS, XML, and XHTML" />

Define the last revision of your page:

<meta name="revised" content="Hege Refsnes, 6/10/99" />

Refresh page every 5 seconds:

<meta http-equiv="refresh" content="5" />

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Required Attributes DTD indicates in which DTD the attribute is allowed. S=Strict, T=Transitional, and F=Frameset.

 

Required Attributes

Attribute	Value	Description	DTD
content	some_text	Defines meta information to be associated with http-equiv or name	STF

 

Optional Attributes

Attribute	Value	Description	DTD
http-equiv	content-type expires refresh set-cookie	Connects the content attribute to an HTTP header	STF
name	author description keywords generator revised others	Connects the content attribute to a name	STF
scheme	some_text	Defines a format to be used to interpret the value of the content attribute	STF