The most simple way to insert an image into the document.
Templater handles specific types in a special way. One of such types is a BufferedImage (Java) and Image (.NET). When buffered image is detected tag will be replaced with an appropriate image.
Templater has image specific type: ImageInfo for direct image manipulation.
By default during startup low-level converters are registered to detect BufferedImage and ImageInputStream and convert them into ImageInfo.