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
Yuan zhejiang
2019 about 1 hour ago 5 control points
2019 about 9 hours ago 4 control points
1938bostonproperandbackbaycombin kvodgsnq
Combine2005 map uploaded by: ______________ for Mapjunction. | Rectified by: _______________ | CUID: _______ | Source: Norman Levinthal Map Center | Link: | Mapjunction mapid: mj.1938BostonProperandBackBayCombin | Mapunction Maptitle: 1938 Boston Bromley Atlas | Start Link:
1938 about 9 hours ago 138 control points
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Recent Mosaics

Mosaic Title Year Last Updated Number of Maps Percentage Complete
0089 Geografisk handatlas öfver jorden (1905) by Cohrs, Torpson
Created by Lars Aronsson in May 2013 based on maps from the 1905 Swedish book "Geografisk handatlas öfver jorden", Compiled by LA2. Links: Source / Biblio Ref Download KML
1905 about 17 hours ago 14 maps 100%
(14 maps)
Getpreviewfile Hong Kong 60s
Collection of latest out-of-copyright topographic maps in Hong Kong Compiled by Download KML
1968 about 20 hours ago 40 maps 100%
(40 maps)
Nord ancona Carta nautica
Compiled by Marco Macera. Download KML
1 day ago 2 maps 100%
(2 maps)
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