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. This project is supported by Entropy Free and the New York Public Library.

Note: This has been migrated from it's old home at . It's now running much faster and previous limits about file sizes and image dimensions have been raised much higher!

Mail me at for more information!


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Last Rectified Maps

Map Title Last modified Status
about 1 hour ago. 21 control points.
about 2 hours ago. 28 control points.
about 3 hours ago. Unrectified.
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Recent Layers

Layer Title Year Number of Maps Percentage Complete
Irl-gsgs-3906-08-13-sw-ballyduff Ireland GSGS3906 1:25k
Ireland GSGS3906 1:25k Compiled by IrlJidel. Last modified about 4 hours ago. Depicts : Links: Source / Biblio Ref Download KML
456 maps 92%
(418 maps)
Private Sherbrooke en 1907
Compiled by Leon Robichaud. Last modified about 21 hours ago. Depicts : Links: Source / Biblio Ref Download KML
10 maps 100%
(10 maps)
174293_008 Insurance plan of the village of Princeville, Que
Compiled by BAnQ. Last modified about 22 hours ago. Depicts : 1956 Links: Source / Biblio Ref Download KML
1956 17 maps 88%
(15 maps)
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