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
Uploaded for Mapjunction by Bill Warner.
1770 about 3 hours ago 86 control points
Mappa crema miobus page 001
2019 about 10 hours ago 3 control points
Fmapoteca 1466 fbnc 105
1944 about 10 hours ago 3 control points
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Recent Mosaics

Mosaic Title Year Last Updated Number of Maps Percentage Complete
Abdsp park map201704 Southern California Open Routes
Compiled by Brian. Download KML
2 days ago 8 maps 100%
(8 maps)
1zc3760090471 Capital District NY, 1952
imagery from a 1952 Aerial Imagery Pass Compiled by Richard Welty. Download KML
1952 3 days ago 28 maps 100%
(28 maps)
Missing test
Compiled by tommy.
4 days ago 0 maps 0%
(0 maps)
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