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
Merrijig township plan  imperial measure 55220001 00
2019 1 minute ago 1 control point
Bogota 64
(In 1 layer)
1997 about 2 hours ago 5 control points
Bogota 54
(In 1 layer)
1997 about 2 hours ago 3 control points
See all maps

Recent Mosaics

Mosaic Title Year Last Updated Number of Maps Percentage Complete
Bogota 74 Bogota 1997
Plano calle por calle de la ciudad de Bogotá en el año 1997 Compiled by Seleccionmultiple. Download KML
1997 about 2 hours ago 54 maps 31%
(17 maps)
Sebastopol  2 township plan  imperial measure 57070001 00 Sebastopol
Compiled by Neil Paddle. Download KML
about 2 hours ago 1 map 100%
(1 map)
Kakameg county Kakamega
Compiled by haporuk. Download KML
about 12 hours ago 1 map 100%
(1 map)
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Create a new mosaic