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 for individuals and small groups. Developed, hosted and maintained by Tim Waters. If you like this project, please consider donating to keep the project going.

Mail me at for more information!


New shortcuts and add layer features in has been updated with several months of the latest code. Some of these features are directed towards the rectify map interface with the addition of keyboard shortcuts and the... read more

What’s coming to – new stuff! is getting an upgrade of code early this first week in April. New things: Keyboard shortcuts New JSON-API and docs Map caching for faster maps Bigger map windows Upgraded... read more

Mapwarper Tutorial & Spatial Humanities Workshop by Lincoln Mullen
Lincoln Mullen has written a great series of workshops on the Spatial / Digital Humanities over five days. Day 3 is focused around Georectification with and is a very... read more

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Last Rectified Maps

Map Title Year Last Updated Status
1953 geological map of traverses in north west portion of gilgit agency pakistan by ivanac
1953 about 1 hour ago 5 control points
Fhnrma1970 1970
1970 about 5 hours ago 16 control points
Default apydzsex
Copy of a map of St. Louis village, ca. 1804-05. Now in possession of U.S. Ware Dept., Washington, D.C. Stoddard map
2018 about 6 hours ago 6 control points
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Recent Mosaics

Mosaic Title Year Last Updated Number of Maps Percentage Complete
Missing Pervititch - Kadıköy
Compiled by Kamil.
3 days ago 0 maps 0%
(0 maps)
Deutschland   religionen andree s allgemeiner handatlas 1881 Religionskarte
Compiled by friedemann_bach. Download KML
1881 3 days ago 2 maps 100%
(2 maps)
Mcmahon line simla accord treaty 1914 map2 xtbnyqse McMahon Line Simla Accord
The disputed McMahon Line between China and India Compiled by Arun Ganesh. Links: Source / Biblio Ref Download KML
1914 3 days ago 2 maps 100%
(2 maps)
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