extensionTypes.ImageDetails

Details about the format and quality of an image.

Type

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

formatOptional
extensionTypes.ImageFormat. The format of the resulting image. Default is "png".
qualityOptional
integer. When format is "jpeg", this controls the quality of the resulting image. It is a number between 0 and 100, which is converted to a value between 0 and 1 and then used as the encoderOptions argument to HTMLCanvasElement.toDataURL(). If is is omitted, 92 is used. As quality is decreased, the resulting image will have more visual artifacts, and the number of bytes needed to store it will decrease. This value is ignored for PNG images.

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxOperaFirefox for Android
Basic supportChrome Partial support Partial
Notes
Partial support Partial
Notes
Notes This feature is supported but not exposed through the 'extensionTypes' object.
Edge Partial support 14
Notes
Partial support 14
Notes
Notes This feature is supported but not exposed through the 'extensionTypes' object.
Firefox Full support 45Opera Partial support Partial
Notes
Partial support Partial
Notes
Notes This feature is supported but not exposed through the 'extensionTypes' object.
Firefox Android Full support 48

Legend

Full support  
Full support
Partial support  
Partial support
See implementation notes.
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.

Document Tags and Contributors

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