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What is enctype in HTML?

Updated: 10/25/2022
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Enctype is a portmanteau of "encoding type." In HTML enctype is an attribute applied to FORM tags. This attribute tells the browser how the data in the form should be encoded, prior to it being sent to the form's action.

There are three valid values for the enctype attribute:

  • application/x-www-form-urlencoded
  • multipart/form-data
  • text/plain

The first value, application/x-www-form-urlencoded, is the default value. When the browser sees this value, it will URL encode all the data in the form. This means that spaces are converted to "+" signs, and special characters are converted to their ASCII HEX value.

Multipart/form-data is the encoding type used to prevent the encoding of the data by the browser. You must use this encoding type if you want to implement a form that uploads files. (Because encoding the binary data in a file would not be good.)

The final type, text/plain, leaves the data unencoded except for changing the spaces into "+" signs.

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