WebMarker Privacy Policy:

WebMarker is designed with privacy in mind.

WebMarker does not collect, transmit, sell, or share your personal information.
Your annotations are stored locally on your device using the browser's storage APIs.
WebMarker does not collect your browsing history.
Screenshots and annotation data are never uploaded to external servers.
No account is required to use WebMarker.
WebMarker does not use analytics, advertising, or tracking services.
The permissions requested by the extension are used only to provide its core functionality, such as drawing on webpages, saving annotations locally, and capturing screenshots.

And this policy shall never be changed.