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 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!



Internationalization (i18n) and Translations for Mapwarper. (English, Dutch, Japanese)
Many thanks to Ellen Gehring of Erfgoed Leiden en Omstreken for the Dutch translations. Ellen with the ELO wanted their own warper and because of this, support for locales, internationalisation and... read more

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

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Last Rectified Maps

Map Title Year Last Updated Status
West side of africa
2024 44 minutes ago 7 control points
Hist map
2024 about 1 hour ago 5 control points
Georgia map
2024 about 1 hour ago 7 control points
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Recent Mosaics

Mosaic Title Year Last Updated Number of Maps Percentage Complete
Or lane eugene 1925.01 sanborn 00 3 USA-OR - Eugene - Sanborn 1925
Sanborn Map Company's 1925 map of Eugene, Oregon. Rectified to Lane County GIS Parcel map. Individual maps organized by <sheet no>.<section no, clockwise> of <total sheets>. Compiled by andrewv69. Links: Source / Biblio Ref Download KML
1925 about 10 hours ago 63 maps 52%
(33 maps)
Ragogna Ragogna
Compiled by Cascafico. Download KML
about 20 hours ago 2 maps 100%
(2 maps)
Okock1 S19 Lubartów - granica woj. mazowieckiego
s19 Compiled by dYNX. Download KML
3 days ago 44 maps 98%
(43 maps)
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