HTML URL encoding reference manual

HTML URL encoding Reference manual

URL encoding converts characters to a format that can be transmitted over the Internet.

URL - Unified Resource Locator

The web browser requests the page from the web server via a URL.

The URL is the address of a Web page, such as: http://www.w3cschool.cn.

URL encoding

URLs can only be sent over the Internet using the ASCII character set.

Because URLs often contain characters other than the ASCII collection, the URL must be converted to a valid ASCII format.

URL encoding replaces non-ASCII characters with "%" followed by two heteens.

The URL cannot contain spaces. URL encoding usually replaces a space with a .

Give it a try

If you click the "Submit" button below, the browser will URL the input before sending it. The page on the server displays the input received.

Try typing some other characters and clicking the submit button again.

The URL encoding function

JavaScript, PHP, and ASP all provide functions for URL encoding strings.

JavaScript uses the encodeURI() function, PHP uses the rawurlencode() function, and ASP uses the Server.URLEncode() function.

Click the URL Encoding button to see how javaScript functions encode text.

Note: The JavaScript function encodes spaces into %20.

URL encoding reference manual

URL encoding reference manual

ASCII device control characters were originally designed to control hardware devices such as printers and tape drives. These characters have no effect in the URL.