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What can happen if you do not specify the character set in the header of your web page?
Description: HTML does not specify charset Even if the majority of the HTML actually employs a standard character set such as UTF-8, the presence of non-standard characters anywhere in the response may cause the browser to interpret the content using a different character set.
Are HTTP headers UTF-8?
HTTP messages are encoded with ISO-8859-1 (which can be nominally considered as an enhanced ASCII version, containing umlauts, diacritic and other characters of West European languages). At the same time, the message body can use another encoding assigned in “Content-Type” header.
What’s the Default Charset for the HTTP header?
Documents transmitted with HTTP that are of type text, such as text/html, text/plain, etc., can send a charset parameter in the HTTP header to specify the character encoding of the document. It is very important to always label Web documents explicitly. HTTP 1.1 says that the default charset is ISO-8859-1.
Do you need to declare the character encoding in the HTTP header?
If serving files via HTTP from a server, it is never a problem to send information about the character encoding of the document in the HTTP header, as long as that information is correct. On the other hand, because of the disadvantages listed above we recommend that you should always declare the encoding information inside the document as well.
What should the line in the HTTP header look like?
The line in the HTTP header typically looks like this: In theory, any character encoding that has been registered with IANA can be used, but there is no browser that understands all of them. The more widely a character encoding is used, the better the chance that a browser will understand it.
Can a non US ASCII character be used in an HTTP header?
It is not possible to use non US-ASCII characters in the header of a request or response. Generally this is not an issue however, because the HTTP headers are designed to facilite the transfer of data rather than to actually transfer the data itself.