Orion Markup lets you express your thoughts and comments though images. It makes it easy to add notes, zoom-in bubbles, outlines boxes, lines, and arrows to images and screenshots.
Supports a full suite of annotation objects, including: zoom bubbles: creates magnified versions of selected image regions multiple sized outline boxes and text labels hundreds of fonts and colors lines of various patterns and thickness (solid, dashed, dotted) tag-optional starting and ending arrows boxes of various colors and sizes fully resizable black-out boxes (for hiding sections of images that you do not wish to share) fully resizable dim boxes (for darkening areas of the images, useful for indicating unimportant or non-significant sections) fully resizable whiten blocks useful predefined number tags (perfect for documenting instructions and steps in manuals)