index.md

---

title: webRequest.UploadData
slug: Mozilla/Add-ons/WebExtensions/API/webRequest/UploadData
page-type: webextension-api-type
tags:
  - API
  - Add-ons
  - Extensions
  - Non-standard
  - Reference
  - Type
  - UploadData
  - WebExtensions
  - webRequest
browser-compat: webextensions.api.webRequest.UploadData

---

{{AddonSidebar()}}

Contains data uploaded in a URL request.

Type

Values of this type are objects. They contain the following properties:

• bytes {{optional_inline}}

  • : any. An ArrayBuffer with a copy of the data.

• file {{optional_inline}}

  • : string. A string with the file's path and name.

Browser compatibility

{{Compat}}

{{WebExtExamples}}

Note: This API is based on Chromium's chrome.webRequest API. This documentation is derived from web_request.json in the Chromium code.