How many types of Meta Tags are there in SEO and what are their characters limits?

[druckexpert]

How many types of Meta Tags are there in SEO and what are their characters limits?

[ademar]

The 14 types of meta tags and their impact on SEO (SEO)

Does Google account for all meta tags? This is probably a classic but this time the answer comes from Google directly ... The opportunity to return to each tag to specify its interest in SEO. So here is a meta tags tutorial in the form of a complete list of these "meta tags" and their impact on SEO.

Summary:

1. Title tag
2. Meta tag description
3. Meta keywords tag
4. Meta tag news_keywords
5. Meta robots tag
6. Meta tag "no sitelinks searchbox"
7. Meta tag revisit after
8. Meta tag source syndication
9. Source original meta tag
10. Meta geolocation tags
11. Meta notranslate tag
12. Meta charset tag
13. Meta refresh tag
14. Videos on meta tags

The following explanations come initially from the article by Google (written by John Mueller, Google engineer in Zurich). They are supplemented by remarks from my experience and updated whenever necessary.

[RH-Calvin]

The 4 types of meta tags are:

- Meta title tag
- Meta description tag
- Meta keywords tag
- Meta robots tag