I normally use a series of tags that I think are the most used and most efficient within the tag.
I would like to know if I am missing any important tags, or if I am using others that are no longer necessary for a good html file.
<html lang = "idioma">
<title>El título de la página</title>
<meta name="description" content="Descripción de la página" />
<meta name="keywords" content="Palabras clave" />
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1">
<meta name=”author” content=”El creador”>
<meta name="owner" content="El propietario" />
<meta name="copyright" content="El propietario" />
<meta name="revisit-after" content="period">
<meta name="robots" content="index, follow">
<link rel="alternate" hreflang="es/en..." href="Web en idioma correspondiente">
<link rel="canonical" href="">
<link rel="icon" href="icono" />
<meta name="google" content="nositelinkssearchbox" />
<meta name="google-site-verification" content="..." />
and then I would put all the tags that link to the styles and scripts.
Meta tag Keywords: Google does not use the meta tag Keywords, since 2009 Google's official version of the meta tag keywords is that it does not even look at it, it does not use it and it has no effect on positioning. It has been used so much for spamming that they have decided to ignore it. How do I tell Google which ones with my keywords? Well, putting the keywords where Google thinks the keywords of an article should go. You can see this article with many useful tips: here .
How to know if any of the meta tags are obsolete?: you can download an add-on for your browser called Html Validator , which can help you see which one is obsolete or not, for example if you are using a meta to define a default language the You might get an error like this:
In HTML5, you can define lang for each element. That means if you have a div that contains Mandarin Chinese, just define a lang="zh-CN" attribute for that div , such as
<div lang = "zh-CN">
.The plugin is for Firefox and Chrome .