This type is a string, which represents a particular kind of resource fetched in a web request.
It's used to filter the requests you listen to using the webRequest API. For example: you can listen to requests only for images, or only for scripts.
Type
Values of this type are strings. Possible values are:
"main_frame"
"sub_frame"
"stylesheet"
"script"
"image"
"object"
"object_subrequest": a request made by a plugin
"xmlhttprequest"
"xbl"
"xslt"
"ping"
"beacon"
"xml_dtd"
"font"
"media"
"websocket"
"csp_report"
"imageset"
"web_manifest"
"other"
Browser compatibility
The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
| Chrome | Edge | Firefox | Firefox for Android | Opera | |
|---|---|---|---|---|---|
| Basic support | 44 | No | 45 | 48 | 31 |
ping | 49 1 | No | 45 | 48 | 36 1 |
font | 49 | No | 45 | 48 | 36 |
media | 58 | No | 45 | 48 | 45 |
websocket | 58 | No | 45 | 48 | 45 |
csp_report | 58 | No | 45 | 48 | 45 |
xbl | No | No | 45 | 48 | No |
xslt | No | No | 45 | 48 | No |
beacon | No | No | 45 | 48 | No |
xml_dtd | No | No | 45 | 48 | No |
imageset | No | No | 45 | 48 | No |
web_manifest | No | No | 45 | 48 | No |
object_subrequest | No | No | 55 2 | 55 2 | No |
2. Requests have been reported as `object_subrequest` before, but the type was missing in the `ResourceType` object before Firefox 55.
This API is based on Chromium's chrome.webRequest API. This documentation is derived from web_request.json in the Chromium code.
Microsoft Edge compatibility data is supplied by Microsoft Corporation and is included here under the Creative Commons Attribution 3.0 United States License.
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