Techniques are described for rendering annotations associated with an image. A view of an image maybe shown on a display, and different portions of the image are displayed and undisplayed in the view according to panning and/or zooming of the image within the view. The image may have annotations. An annotation may have a location in the image and may have associated renderable media. The location of the annotation relative to the view may change according to the panning and/or zooming. A strength of the annotation may be computed, the strength changing based the panning and/or zooming of the image. The media may be rendered according to the strength. Whether to render the media may be determined by comparing the strength to a threshold.