Some common types used in other WebExtension APIs.

Types

extensionTypes.ImageFormat
The format of an image.
extensionTypes.ImageDetails
Details about the format and quality of an image.
extensionTypes.RunAt
The soonest that the JavaScript or CSS will be injected into the tab.
extensionTypes.CSSOrigin
Indicates whether a CSS stylesheet injected by tabs.insertCSS should be treated as an "author" or "user" stylesheet.

Browser compatibility

ChromeEdgeFirefoxFirefox for AndroidOpera
ImageDetails (Yes) (Yes)4548 (Yes)
ImageFormat (Yes) (Yes)4548 (Yes)
RunAt20 No454815

Acknowledgements

This API is based on Chromium's chrome.extensionTypes API. This documentation is derived from extension_types.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.

Document Tags and Contributors

 Contributors to this page: wbamberg, snoack, rolfedh
 Last updated by: wbamberg,