How to fix “No character encoding declared at document level” in HTML Document ?

How to set character encoding for document in HTML5 ?

Last Updated : 15 May, 2023

In this article, we will learn how to set character encoding for document in HTML5. Character encoding is a method of defining a mapping between bytes and text. To display an HTML document correctly, we must choose a proper character encoding.

The different types of character encoding include:

ASCII Character Set: It is the first ever character encoding standard. The major disadvantage with ASCII is that it contained only a limited range of characters (128 characters).
ANSI Character Set: This standard was an extended version of standard ASCII character set. It supports 256 characters.
ISO-8859-1 Character Set: It is the default character encoding in HTML 2.0. It is also an extension of ASCII standard with International characters. This used full bytes (8-bits) to show characters.
UTF-8 Character Set: This standard covers almost all of the characters and symbols in the world. The limitations of ANSI and ISO-8859-1 were satisfied by the UTF-8 Character Set. The default character encoding for HTML5 is UTF-8.

The HTML5 specification encourages developers to use the UTF-8 character set.

A character can be 1-4 bytes long in the UTF-8 Encoding Standard. This is also the most preferred encoding for email and web pages.

Character encoding can be specified in the meta tag in HTML.
The meta tag is used for specifying metadata about the webpage and will not be displayed in the web pages.
The meta tag helps search engines to understand what a web page is about.
The meta tag should be placed with the head tag in HTML.

Syntax:

1. For HTML4

<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">

2. For HTML5

The default character encoding for HTML5 is UTF-8, but you can still specify this to be extra cautious.

<meta charset="UTF-8">

Example: In this example, we will see the use of a meta character set

HTML

<!DOCTYPE html>
<html>
<head>
    <!-- NOTE: <meta charset="UTF-8"> 
        is also applicable. -->
    <meta charset="utf-8">
    <title>Page Title</title>
</head>
<body>
    <h2>Welcome To GFG</h2>
    <p>
        Default code has been loaded
        into the Editor.
    </p>
</body>
</html>

Output:

How to fix “No character encoding declared at document level” in HTML Document ?

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