Meta descriptions are HTML attributes that provide concise explanations of the contents of web pages. Meta descriptions are commonly used on search engine result pages (SERPs) to display preview snippets for a given page.
Code Sample
<head>
<meta name="description" content="This
is an example of a meta description. This will often show up in search results.">
</head>
Optimal Length for Search Engines
Roughly 155 Characters
What is a Meta Description?
Meta description tags, might not
important to search engine
rankings, are extremely important in gaining user click-through from SERPs. These short paragraphs are a webmaster’s opportunity to advertise content to searchers and to let them know exactly whether the given page contains the information they're
looking for.
The meta description should employ the keywords intelligently, but also create a compelling description that a searcher will
want to click. Direct relevance to the page and uniqueness between each page’s meta description is key.
The description should optimally be between 150-160 characters.
<head>
<meta name="description" content="Here
is a description of the applicable page">
</head>
Write better compeling ad copies
The meta description tag serves the function of advertising copy. It draws readers to a website from the SERP and thus, is an extremely important part of
search marketing. Crafting a readable, compelling description using important keywords can improve the click-through rate for a given webpage.
To maximize click-through rates on search engine result pages, it's important to note that Google and other search engines bold
keywords in the description when they match search queries.
Recommended Length
Meta descriptions can be any length, but search engines generally truncate snippets
longer than 160 characters. It is best to keep meta descriptions between 150 and 160 characters.
Avoid Duplicate Meta Description Tags
As with title tags , it is important that meta descriptions on each page be unique. One way to combat duplicate meta
descriptions is to create a dynamic and programmatic way to make unique meta
descriptions for automated pages.
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Not a Google Ranking Factor
Google announced in September of 2009 that neither meta descriptions nor meta keywords factor into Google's ranking
algorithms for web search.
Google uses meta descriptions to return results when searchers use advanced search operators to match meta tag content, as well as to pull preview snippets on search result pages, but it's important to note that meta descriptions do not to influence
Google's ranking algorithms for normal web search.
Quotes Cut Off Descriptions
Any time quotes are used in a meta description, Google cuts off the description. To prevent meta descriptions from being cut off, it's best to remove all non-alphanumeric characters from meta descriptions. If quotation marks are important in your meta description, you can change them to single quotes rather than double quotes to prevent truncation.
Sometimes it is Okay to Not Write Meta Descriptions Although conventional logic would hold that it's universally wiser to write a good meta description, rather.than let the engines scrape a given web page, this isn't always the case. Use the general rule that
if the page is targeting between one and three heavily searched terms or phrases, go with a meta description that hits those users performing that search. If the page is targeting long-tail traffic (three or more keywords)—for example, with hundreds of articles or blog entries, or even a huge product catalog—it can sometimes be wiser to let the engines extract the relevant text, themselves.
The reason is simple: When engines pull, they always display the keywords and surrounding
phrases that the user has searched for. If a webmaster forces a meta description, they can detract from the relevance the
engines make naturally. In some cases, they'll overrule the meta description anyway, but a webmaster can not always
rely on the engines to use the more relevant text in the SERP.
When choosing whether or not to add a meta description, also consider that social sharing sites like Facebook commonly use
a page's description tag when the page is shared on their sites.
Without the meta description tag, social sharing sites may just use the first text they can find.
Depending on the first text on your page, this might not create a good user experience for users encountering your content via social sharing.
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