extensionTypes

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

Report problems with this compatibility data on GitHub
webextensions-desktopwebextensions-mobile
ChromeEdgeFirefoxOperaSafariFirefox for Android
ImageDetails
ImageDetails.rect
ImageDetails.scale
ImageFormat
RunAt
CSSOrigin

Legend

Full support
Full support
Partial support
Partial support
No support
No support
See implementation notes.

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.