The
part is crucial to the SEO, user experience and performance of web pages, and is often overlooked but needs to be paid attention to. Its core functions include: 1. Set basic document information, such as <meta> tag definition character encoding, viewport and page description, to ensure multi-language display, mobile adaptation and SEO optimization; 2. Introduce external resources, CSS should be placed in to avoid style flickering, while JS is usually placed at the bottom, only if necessary; 3. Set page title and website icon <link rel="icon"> to improve search engine recognition and brand recognition; 4. Add Open Graph tags to optimize social media sharing effects and enhance communication. Correctly configuring content can significantly improve the overall performance of the web page. In web development, the part is often ignored, but it is a very critical part of the entire page structure. Although it won't be displayed directly on the page, it determines how the page loads, how it is recognized by search engines, and how it performs on different devices. Correct use of the content in
has a great impact on SEO, user experience and even performance optimization.

Set basic document information: <meta>
tag
The <meta>
tag is one of the most common content in and is used to tell browsers and search engines the basic information about this page. The most basic
<meta>
include setting character encoding, viewport and page description.
-
charset="UTF-8"
: Ensure that the page displays characters in various languages correctly. -
name="viewport"
: Mobile-friendly, set the viewport width to the device width. -
name="description"
: A short description of the page content, which is helpful for SEO.
for example:

<meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta name="description" content="A brief tutorial page about web development skills">
Although these settings seem simple, if the viewport is missed, the page may be displayed very small on the phone, and the user has to zoom in manually to greatly reduce the experience.
Introducing external resources: stylesheets and scripts
The style and some scripts of the page are usually placed in <head>
, but pay attention to the order and loading method. Generally, we will put CSS in <head>
so that the page can immediately apply styles when it is loaded, avoiding "Flashing of styleless content" (FOUC).

<link rel="stylesheet" href="styles/main.css">
JavaScript is usually recommended to be placed at the bottom of the page, but it can also be placed in <head>
if some scripts need to be run before the page is rendered. But be aware that if the script is too large or loads slowly, it will affect the display speed of the page.
Page title and icon: <title>
with <link rel="icon">
The <title>
tag determines the title displayed on the browser tab and also affects the title in search engine results. It should be concise, descriptive, and contains keywords.
<title>Web page development skills | HTML Head detailed explanation</title>
In addition, adding a website icon (favicon) can make your website easier to identify among many tags:
<link rel="icon" href="favicon.ico" type="image/x-icon">
The icon is generally in .ico
format, or it can be .png
. Don’t underestimate this small icon, it is actually quite useful in improving brand recognition and user experience.
Other common content: Open Graph and SEO related
If you want the page to look more beautiful when shared on social media, add the Open Graph tag. These tags define the title, description and images displayed when shared on platforms such as Facebook and Twitter.
For example:
<meta property="og:title" content="HTML Head Details: Things You Should Know"> <meta property="og:description" content="Comprehensive parse of what the HTML head part should contain and its functions"> <meta property="og:image" content="https://example.com/images/seo-image.jpg">
Although these tags are not necessary, they can play a significant role in the dissemination of content.
Basically that's it. The part of HTML is not complicated, but it is easy to ignore the details. Taking some time to clarify the role and order of each tag will be helpful to the performance and promotion of the website.
The above is the detailed content of The HTML `head` Element: What Goes Where. For more information, please follow other related articles on the PHP Chinese website!

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