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
1807 vargarda
The village of Vargarda, map from 1807
1807 9 minutes ago 13 control points
Main 1921 sanborn map stitch flattened v3
1911 about 2 hours ago 4 control points
A11660 209 re
2023 about 7 hours ago 30 control points
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Recent Mosaics

Mosaic Title Year Last Updated Number of Maps Percentage Complete
2.1 S19 Dukla - Barwinek
Koncepcja Programowa Compiled by AndyB66. Download KML
2021 about 14 hours ago 2 maps 100%
(2 maps)
Rys. 2.1 plan sytuacyjny S19 Babica - Domaradz
Koncepcja Programowa Compiled by AndyB66. Download KML
2021 about 16 hours ago 10 maps 100%
(10 maps)
1 4 S19 Racławówka - Barwinek
Orientacja STEŚ II Compiled by AndyB66. Download KML
2010 about 18 hours ago 4 maps 100%
(4 maps)
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