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
Farm copy
2024 5 minutes ago 3 control points
2024 39 minutes ago 6 control points
Bacon s map of portsmouth  portsea  landport  southsea and gosport   btv1b530211067
1884 about 6 hours ago 9 control points
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Recent Mosaics

Mosaic Title Year Last Updated Number of Maps Percentage Complete
%ec%82%bc%ed%8c%90%ed%86%b5 1 京城府龍山面三坂通外一町原圖
1:600 Cadastral map of Misaka-tori, Ryuzan-men, Keijo 1914 Compiled by tbd3539. Download KML
1914 about 8 hours ago 26 maps 100%
(26 maps)
%ec%95%94%ea%b7%bc%ec%a0%95 18 京城府龍山面原圖
1:600 Contour map of Ryuzan-men, Keijo 1914 Compiled by tbd3539. Download KML
1914 about 8 hours ago 228 maps 100%
(228 maps)
Missing ct marathon test
Compiled by scott.
about 19 hours ago 0 maps 0%
(0 maps)
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