{
  // the HTML to screenshot
  html: '',

  // specify page size
  viewportSize: {
    width: 650,
    height: 650,
    // the screenshot will be taken full page height
    fullPage: false,
  },

  // resize final image
  resize: {
    width: 300,
    // if not given, will resize conserving ratio
    height: 150,
  }

  // inject custom styles in page. the keys are querySelectors. the values
  // will be merged to CSSStyleDeclaration of the found node
  styles: {
    body: {
      marginTop: 40,
    },
    '.my-class': {
      backgroundColor: 'red',
    }
  },

  // capture the given element (can't be used with `fullPage`)
  selector: '.my-element',

  // wait for 'load' event on the page, until this max timeout
  loadTimeout: 300,
}