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!

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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 1 hour ago. 5 control points.
about 2 hours ago. 4 control points.
A multi-use area just south of Gunnison Colorado.
about 2 hours ago. 6 control points.
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Recent Layers

Layer Title Year Number of Maps Percentage Complete
Thompson_starr Thompson Surveys
The four surveys of Rhinebeck (including present-day Red Hook and Tivoli) completed by Alexander Thompson in 1797-98. Compiled by Gretta Tritch Roman. Last modified about 4 hours ago. Depicts : 1797 Links: Source / Biblio Ref Download KML
1797 4 maps 100%
(4 maps)
Private Bogotá_1915
Compiled by Luis Colón. Last modified 2 days ago. Depicts : Links: Source / Biblio Ref Download KML
7 maps 100%
(7 maps)
Private Barrios
Compiled by Cartografía de Bogotá. Last modified 4 days ago. Depicts : Links: Source / Biblio Ref Download KML
122 maps 99%
(121 maps)
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