tabs.captureVisibleTab()
Creates a data URL encoding the image of an area of the active tab in the specified window. You must have the <all_urls>
or activeTab
permission.
Note: In Firefox 125 and earlier, this method was only available with the <all_urls>
permission.
In addition to sites that extensions can normally access, this method allows extensions to capture sensitive sites that are otherwise restricted, including browser UI pages and other extensions' pages. These sensitive sites can only be captured with the activeTab
permission. Chrome also permits file URLs to be captured when the extension has been granted file access.
This is an asynchronous function that returns a Promise
.
Syntax
let capturing = browser.tabs.captureVisibleTab(
windowId, // optional integer
options // optional extensionTypes.ImageDetails
)
Parameters
Return value
A Promise
that is fulfilled with a data URL that encodes the captured image. It can be assigned to the 'src' property of an HTML image element for display. If any error occurs, the promise is rejected with an error message.
Examples
Capture an image of the active tab in the current window with default image settings:
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.