| onclone | `null` | Callback function which is called when the Document has been cloned for rendering, can be used to modify the contents that will be rendered without affecting the original source document.
| proxy | `null` | Url to the [proxy](/proxy/) which is to be used for loading cross-origin images. If left empty, cross-origin images won't be loaded.
| removeContainer | `true` | Whether to cleanup the cloned DOM elements html2canvas creates temporarily
| scale | `window.devicePixelRatio` | The scale to use for rendering. Defaults to the browsers device pixel ratio.
If you wish to exclude certain `Element`s from getting rendered, you can add a `data-html2canvas-ignore` attribute to those elements and html2canvas will exclude them from the rendering.