tabs.captureVisibleTab()
Creates a data URL encoding the image of an area of the currently active tab in the specified window. You must have the <all_urls>
permission to use this method. (Alternately, Chrome allows use of this method with the activeTab
permission and a qualifying user gesture).
This is an asynchronous function that returns a Promise
.
Syntax
js
let capturing = browser.tabs.captureVisibleTab(
windowId, // optional integer
options // optional extensionTypes.ImageDetails
)
Parameters
windowId
Optional-
integer
. The target window. Defaults to the current window. options
Optional
Return value
A Promise
that will be fulfilled with a data URL which encodes the captured image. May be assigned to the 'src' property of an HTML Image element for display. If any error occurs the promise will be rejected with an error message.
Examples
Capture an image of the active tab in the current window, with default settings:
js
function onCaptured(imageUri) {
console.log(imageUri);
}
function onError(error) {
console.log(`Error: ${error}`);
}
browser.browserAction.onClicked.addListener(() => {
let capturing = browser.tabs.captureVisibleTab();
capturing.then(onCaptured, onError);
});
Browser compatibility
BCD tables only load in the browser
Note: This API is based on Chromium's chrome.tabs
API. This documentation is derived from tabs.json
in the Chromium code.