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
Mojaverd2east page 0017
Provided by Dave Barton -
2019 about 1 hour ago 5 control points
Imagen rusia8888
about 1 hour ago 9 control points
2019 about 1 hour ago Unrectified
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Recent Mosaics

Mosaic Title Year Last Updated Number of Maps Percentage Complete
Mojaverd1west Mojave Road Details
Provided by Dave Barton - Compiled by Brian. Download KML
about 5 hours ago 33 maps 100%
(33 maps)
Mapa isla rusia   guerra fr%c3%ada Isla Furugelm
Mosaico Compiled by Sofia Arango. Download KML
1 day ago 2 maps 50%
(1 map)
2018 10 03 19.09.46 Norwich Community Hospital site mosaic 2
Map of development plans overlaid on map of chalk workings Compiled by Nick Brooks. Download KML
7 days ago 2 maps 100%
(2 maps)
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Create a new mosaic