IIIF WebGL / Canvas / DOM mobile-ready fast viewer powered by OpenLayers V3.
IIIF viewer from Klokan Technologies is optimized for desktop and mobile devices (iOS, Android), is open-source, free to use and has, compared to other viewers, the following extra features:
- Rotation on client side: pinch with fingers, alt-shift drag with the mouse.
- Drawing tools: polygons, lines, markers — can be used to annotate parts of the pictures.
- Color adjustment: saturation, lightness, etc.
See full screen demo (and try it on mobile device):
And examples of use: http://klokantech.github.io/iiifviewer/examples/
It implements the IIIF protocol - see http://iiif.io/.
Developed by Klokan Technologies GmbH for the clients who are using IIIF protocol for publishing maps. The IIIF protocol can be easily used in http://www.georeferencer.com/ service.
Klokan Technologies GmbH also developed and release an open-source image server for IIIF.