The difference between Multipart/form-data and application/x-www-form-urlencoded

In the syntax of the form element, enctype indicates the format of the submitted data

Use the Enctype property to specify the type of encoding the browser uses when sending data back to the server.
Below is the description:
application/x-www-form-urlencoded: The form data is encoded as a name/value pair. This is the standard encoding format.
Multipart/form-data: The form data is encoded as a message, and each control on the page corresponds to a part of the message.
Text/plain: Form data is encoded in plain text with no control or formatting characters.

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The Enctype property of a form is encoded in two common ways: application/x-www-form-urlencoded and Multipart/form-data, which are application/by default. X-www-form-urlencoded.

When action is get, the browser uses x-www-form-urlencoded encoding to convert the form data into a string (Name1=value1&name2=value2 ... ), and then append the string to the URL, using the. Split, to load the new URL.
When the action is post, the browser encapsulates the form data into the HTTP body and then sends it to the server.

If you don't have a type=file control, you can use the default application/x-www-form-urlencoded.
But if you have type=file, you will need to use Multipart/form-data. The browser splits the entire form into units of controls and adds Content-disposition (form-data or file) to each section, Content-type (default = Text/plain), name (control name), and so on. and add a separator

The difference between Multipart/form-data and application/x-www-form-urlencoded