Scrawly от Luke Murray

Scrawl lets you draw on any webpage with excalidraw. You can trigger the extension using a keyboard shortcut (default cmd/ctrl+shift+e) and on pdf pages you can trigger the extension by pressing `show scrawl` in the bottom right of your screen. The drawings created by scrawl are stored in local storage and are associated with the exact URL of the page you are on. You can change the background blur and default keyboard shortcut by clicking the extension icon.