chrome.pageCapture
- Description
Use the
chrome.pageCaptureAPI to save a tab as MHTML. - Permissions
MHTML is a standard format supported by most browsers. It encapsulates in a single file a page and all its resources (CSS files, images..).
Note that for security reasons a MHTML file can only be loaded from the file system and that it can only be loaded in the main frame.
Manifest
You must declare the "pageCapture" permission in the extension manifest to use the pageCapture API. For example:
{
"name": "My extension",
...
"permissions": [
"pageCapture"
],
...
}Summary
- Methods
Methods
saveAsMHTML
chrome.pageCapture.saveAsMHTML(
details:
object,
callback?:
function,
)
Saves the content of the tab with given id as MHTML.
Parameters
- details
object
- tabId
number
The id of the tab to save as MHTML.
- callback
function optional
The
callbackparameter looks like:(mhtmlData?: ArrayBuffer) => void- mhtmlData
ArrayBuffer optional
The MHTML data as a Blob.
Returns
Promise<ArrayBuffer | undefined>
Chrome 116+Promises are supported in Manifest V3 and later, but callbacks are provided for backward compatibility. You cannot use both on the same function call. The promise resolves with the same type that is passed to the callback.