Map Warper

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Update July 2020: Ran out of disk space. Maps older than 2 years will need re-warping to work. Downtime will happen again.


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
Blac m 972 1830m cropped levels
Courtesy of the Benson Latin American Collection, The University of Texas at Austin
1830 about 3 hours ago 11 control points
G4100 1835 p4
Map provided courtesy of the Map Library at the University of Illinois at Urbana-Champaign. Engraved by Doolittle & Munson, Cincinnati, Ohio. Shows counties, county seats, and roads. Illinois College. 1 map, hand colored
1835 about 4 hours ago 68 control points
Crush mining area origina
1993 about 7 hours ago 7 control points
See all maps

Recent Mosaics

Mosaic Title Year Last Updated Number of Maps Percentage Complete
Plan usine jpg hs
az Compiled by HPEZ. Download KML
about 13 hours ago 1 map 100%
(1 map)
Plan usine jpg f
h Compiled by HPEZ. Download KML
about 14 hours ago 1 map 100%
(1 map)
Kataster wessum dorf 1827 ref Dorf1827_jpg
Compiled by hr131201. Download KML
1 day ago 1 map 100%
(1 map)
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