Map Warper

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Find maps and other imagery, upload, and rectify against a real map.

You can then download and use the rectified map in your mapping applications.

Just sign up and you can start uploading and get warping!

Upload Map!

What is it?

It's a free to use, open source map warper / map georectifier, and image georeferencer tool. Developed, hosted and maintained by Tim Waters. This project is supported by Topomancy LLC and the New York Public Library.

Mail me at for more information!


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Last Rectified Maps

Map Title Last modified Status
about 2 hours ago. 3 control points.
about 6 hours ago. 59 control points.
about 8 hours ago. 109 control points.
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Recent Layers

Layer Title Year Number of Maps Percentage Complete
1-06-1937 Burlington 1937 Mosaic
A combination of aerial photos of the greater Burlington, VT area, taken by the Sanborn Fire Insurance Co. in August 1937 Compiled by Bill Morris. Last modified 2 days ago. Depicts : 1937 Links: Source / Biblio Ref Download KML
1937 27 maps 78%
(21 maps)
Baja1 baja nord
Compiled by Drahovszky Peter. Last modified 7 days ago. Depicts : Links: Source / Biblio Ref Download KML
20 maps 100%
(20 maps)
1955_boston_vkf00_1s 1955_Boston_CSGS_Aerial
Compiled by Elad Horn. Last modified 8 days ago. Depicts : Links: Source / Biblio Ref Download KML
5 maps 100%
(5 maps)
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