ScrollViewImager

.mockup

returns a screenshot of the current visible area

.screenshot(scale: CGFloat, completion: (screenshot: UIImage?) -> Void)

returns a screenshot of the entire content by scrolling the scrollview

.screenshot(scale: CGFloat) -> UIImage

returns a screenshot of the entire content by resizing the scrollview.

With .mockup you can hide the UIScrollView or UICollectionView while .screenshot does it's work, which involves a lot of scrolling.

.screenshot(scale: CGFloat, completion: (screenshot: UIImage?) -> Void) This will go over the entire content and take screenshots, adding delays to allow redraws. Scale the screenshots down to prevent memory issues. Finally it will stitch all images together.

.screenshot(scale: CGFloat) -> UIImage This will simply resize the scrollview and take a screenshot. Uses all the memory!