Meta Tags for HTTP Header, Search Engines and Web Browser
A common use for META is to specify keywords that a search engine may use to improve the quality of search results. When several META elements provide language-dependent information about a document or web page. Meta Tags are the HTML or XHTML element used to provide structured metadata about a Web page. Multiple elements are often used on the same page: the element is the same, but its attributes are different. Meta elements can be used to specify page description, keywords and any other metadata not provided through the other head elements and attributesThere are many meta tags and html-tags and obviously they don't all influence the search result. For example the html cookie tag doesn't have any influence on your ranking with the search engines but the title of your page, the keywords and the description meta tag are very important. This list of meta tags and their influence will provide you with all the basic information.
Meta tags provide information about your Web page to search engine robots so that the search engine can better understand what your site is about. Meta tags provide this information in a format that the web crawlers/spiders that visit your site can understand
Meta tag code is inserted into your html code at the head of the document between the and . Meta tags are used by many search engines, and those that choose to ignore certain portions of the meta tags field, may at any time change their algorithms to include it
Description Meta Tag
<meta name="description" content="text">
Meta description Tag is a HTML or XHTML element used to increase the visibility of a web page. It is important for every web pages and should be descriptive. Add keywords and phrases that are relevant and correspond to the text on that specific page
Description Meta Tag Example
<meta name="description" content="Keep you Meta tag description characters upto 200 chars. Too small in length will not be effective in Search Engines and Too long will be considered as Spam">
Keywords Meta Tag
<meta name="keywords" content="text">
Meta Keyword Tag is a HTML or XHTML element contains keywords of a web page used to identify your web page in Search engines for those keywords. It is important for every web pages and should be descriptive. Add keywords and keyword phrases that are relevant and correspond to the text on that specific page. The keywords used in Meta keyword tag should be present at least once anywhere in the web page. Otherwise it will be considered as Spam. Keep the Meta keywords characters length with in 20 words as possible
Keywords Meta Tag Example
<meta name="keywords" content="meta tags, meta keyword, search engine optimization, SEO, webmaster">
robots Meta Tag
<meta name="robots" content="selection">
Meta robots Tag is a HTML or XHTML element contains search engine robot names which allows you to take a control over the search engine robots visiting and indexing your website. The robots meta tag is not the same as the file called robots.txt You can use these two methods to control the Search Engine robots together. Both are used by the search engines like Yahoo, Google and the other major search engines. Using this meta tag in a wrong way will keep the robots out of your website and increase the maximum possibility of indexing your website in search engine databases. So the influence of this meta tag is significant
robots Meta Tag Example
<meta name="robots" content="index, follow">
The spider will now index your whole website and follow the out links of your whole website. In other words Search Engine stores your whole website information in its databases and it will consider the interlinking and out linking resources to the website
<meta name="robots" content="INDEX, FOLLOW"> <META NAME="robots" CONTENT="INDEX, FOLLOW"> <META NAME="robots" CONTENT="index follow"> <meta name="robots" content="index, nofollow">
The spider will index your web page and do not follow the out links of your web page
<meta name="robots" content="noindex, follow">
The robots will follow the out links of your web page won't index your web page
<meta name="robots" content="noindex, nofollow">
The robots won't follow the out links and won't index your web page
You can also write the robots Meta Tags in the following formats
<meta name="robots" content="index, nofollow" /> <meta name="robots" content="noindex, follow" /> <meta name="robots" content="noindex, nofollow" />
NOARCHIVE Meta Tag Example
<meta name="ROBOTS" CONTENT="NOARCHIVE">
The Search Engine Robots has introduced the new meta tag that will stop it from 'caching' pages or not to showing pages for SERP results
NOSNIPPET Meta Tag Example
<meta name="GOOGLEBOT" CONTENT="NOSNIPPET">
A snippet is a text excerpt from the returned result page that has all query terms bolded. The excerpt allows users to see the context in which search terms appear on a web page, before clicking on the result. Nosnippet Meta tag will inform the search engines to remove the snippets for the web page and the cached web page
revisit-after Meta Tag
<meta name="revisit-after" content="period">
Meta revisit-after Tag is a HTML or XHTML element contains the info for search engine robot How often do you want the crawlers to come back and index your website or web pages again
revisit-after Meta Tag Example
<meta name="revisit-after" content="5 days">
This above tag will tell the Search Engine Crawlers to revisit your website after every five days
<meta name="revisit-after" content="2 months">
This above tag will tell the Search Engine Crawlers to revisit your website after every two months
copyright Meta Tag
<meta name="copyright" content="text">
Meta copyright Tag is a HTML or XHTML element contains copy right information of the web page or website
copyright Meta Tag Example
These following other formats are also be used for Meta copyright Tag
<meta name="copyright" content="the Meta Tags Company"> <meta name="copyright" content="the Meta Tags Company" />
How to Control the Robots?
robots Meta Tag
<meta name="googlebot" content="noodp">
The major search engines like Google, Yahoo! and MSN use in some cases the title and abstract of theOpen Directory Project (ODP) listing of a Web site for the title and for description which also called as snippet or abstract in the search engine results pages. Meta copyright Tag is a HTML or XHTML element used to inform web spiders not to use the ODP Title and Description for listing the website or web page in Search Engine Resulting Page (SERP)
For All Search Engine Crawlers
<META NAME="ROBOTS" CONTENT="NOODP" >
For Google Search Engine Crawler or Bot
<META NAME="GOOGLEBOT" CONTENT="NOODP" >
For Yahoo Search Engine Crawler or Bot
<META NAME="Slurp" CONTENT="NOODP" >
For MSN Search Engine Crawler or Bot
<META NAME="msnbot" CONTENT="NOODP">
language Meta Tag
<meta name="language" content="english">
Meta language Tag is a HTML or XHTML element contains web page language info. Search engines may filter on the language attribute to display search results using the language preferences of the user
The meta tag language declares to users the natural language of the document being indexed. Search engines which index websites based on language often read this tag to determine which language(s) is supported.
This tag is particularly useful for non-english and multiple language websites
Language Meta Tag Example
<meta name="language" content="english">
reply-to Meta Tag
<meta name="reply-to" content="email address">
Meta reply-to Tag is a HTML or XHTML element contains web page contact info. By adding the email address of your webmaster in the reply-to tag you are able to explain how people can contact the right person in your organization who is responsible for your website
reply-to Meta Tag Example
<meta name="reply-to" content="webmaster@nscraps.com">
web_author Meta Tag
<meta name="web_author" content="text">
Meta web_author Tag is a HTML or XHTML element contains web_author info. Search engines may filter on the web_author attribute to display search results using the web_author preferences of the user
The List of HTTP Header Meta Tags
HTTP header expires Meta Tag
<meta http-equiv="name" content="value">
Meta expires Tag is a HTML or XHTML element contains the details of HTTP Headers info. It will tell the web browser to safely cache the web page contents until then
HTTP header expires Meta Tag Example
<META http-equiv="expires" content="Tue, 15 Mar 2011 12:25:30 GMT">
The above Meta Tag can cache the web page contents until then
pragma Meta Tag
<meta http-equiv="pragma" content="no-cache">
This Meta tag make sure your page will not remain in the cache of the computer of your visitor. It's useful if the content of the page regularly changes
window-target Meta Tag
<meta http-equiv="window-target" content="_top">
This meta tag makes sure that others are not able to show your page in a frame on their own website
Set-Cookie Meta Tag
<meta http-equiv="Set-Cookie" content="account=5463; path=/expires=Thursday, 15-Mar-11 14:15:30 GMT">
This Set Cookie Meta Tag will place the cookies on users computer and expires on the Time and date given in the Set-Cookie value
pics-label Meta Tag
<meta http-equiv="pics-label" content="text">
This is a specific Meta tag that provides you the possibility to add a value to the pictures on your website, The values like "violence", or "for all ages" etc
refresh Meta tag
<meta http-equiv="refresh" content="value">
Meta refresh Tag is a HTML or XHTML element automatically redirects you to another web page
refresh Meta tag Example
<meta http-equiv="refresh" content="15; URL=http://nscraps.com/HTML">
Content-Type Meta Tag
<META http-equiv="Content-Type" content="text/html; charset=ISO-8859-5">
Normally, HTTP headers are set automatically by Web servers based on responses to requests for resources. But rather than having the Web server determine which headers are used, you can modify existing headers or create your own using the HTTP-EQUIV tag. This lets you customize browser and server behavior
scheme Meta Tag
<META scheme="ISBN" name="identifier" content="0-8230-2355-9">
Meta scheme Tag is a HTML or XHTML element specifies how the value of content should be interpreted, when name is used. This attribute contains additional information for the exact determination of meta content. For example, it may contain a standard for dates used in the meta section
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