But there are several cases in which you might benefit from using `UploadFile`.

## File Parameters with `UploadFile` { #file-parameters-with-uploadfile }

Define a file parameter with a type of `UploadFile`:

{* ../../docs_src/request_files/tutorial001_an_py39.py hl[14] *}

Using `UploadFile` has several advantages over `bytes`:

* You don't have to use `File()` in the default value of the parameter.

The files and form fields will be uploaded as form data and you will receive the files and form fields.

And you can declare some of the files as `bytes` and some as `UploadFile`.

/// warning

    - how-to/configure-swagger-ui.md
    - how-to/testing-database.md
- Reference (Code API):
  - reference/index.md
  - reference/fastapi.md
  - reference/parameters.md
  - reference/status.md
  - reference/uploadfile.md
  - reference/exceptions.md
  - reference/dependencies.md
  - reference/apirouter.md
  - reference/background.md
  - reference/request.md
  - reference/websockets.md
  - reference/httpconnection.md

## 0.73.0

### Features

* ✨ Add support for declaring `UploadFile` parameters without explicit `File()`. PR [#4469](https://github.com/tiangolo/fastapi/pull/4469) by [@tiangolo](https://github.com/tiangolo). New docs: [Request Files - File Parameters with UploadFile](https://fastapi.tiangolo.com/tutorial/request-files/#file-parameters-with-uploadfile).