About the Meta Tag Generator tool!
Tips for meta description
Importantly enough: Many search engines use the meta description tag in their search results. Good meta description tags can help improve your click-through rate.
Your meta description should be read carefully because many human eyes will see it in many search results.
It should be one to two sentences long.
Each page should have its own meta description.
It should reinforce the keywords of the page title, targeting the alternative versions.
It should typically use multiple versions of the keywords and keyword phrase modifiers, hitting other permutations that aren't heavily targeted in your page title.
Your meta description should also help differentiate your site from competing sites.
Tips for meta-keywords:
Not important: it is not used by most search engines because it is very susceptible to spam and users never see it.
It should consist of two or three of the main keywords used to describe that page.
The former Yahoo! engineer Search Jon Glick stated that the keywords meta tag is used to be included in a subset of search results and has no effect on relevance.
It is only created for machines.
Other meta tags:
Most of the other meta tags that revolve around optimization in a classic sense (dublin core, meta keywords, revisit on, etc.) are usually a waste of time because most search engines ignore them.
That said, there are a few exceptions to this general rule:
The robots meta tag, which is used to tell search engines NOT to INDEX a page or FOLLOW ANY LINKS, but if you want the page to be indexed and tracked, you won't use the robots exclusion meta tag because indexing and tracking are default states.
The rel = canonical tag, which is used to identify the original source document in cases where multiple versions of a document exist.
Any specific tag used to verify that the website belongs to an entity, to access the offers of tools for webmasters.