Some common types used in other WebExtension APIs.

Types

extensionTypes.ImageDetails
Details about the format and quality of an image.
extensionTypes.ImageFormat
The format of an image.
extensionTypes.InjectDetails
Injects details into a page.
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 *14 *4548 Yes *
ImageFormat Yes *14 *4548 Yes *
RunAt20 * No454815 *
CSSOrigin No No5353 No

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: hellosct1, wbamberg, snoack, rolfedh
Last updated by: hellosct1,