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
Dk008320 7843x8551
(In 1 layer)
1891 about 8 hours ago 4 control points
Ds1103 2203da111 b
1968 about 9 hours ago 5 control points
Ds1103 2203da111 a
1968 about 9 hours ago 10 control points
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Recent Mosaics

Mosaic Title Year Last Updated Number of Maps Percentage Complete
Dk008321 7808x8491 Hævningsfænomener 1891
Compiled by jonls. Download KML
1891 about 8 hours ago 2 maps 100%
(2 maps)
Bitche   a Bitche
Compiled by juju55. Download KML
4 days ago 3 maps 100%
(3 maps)
83107 201901 01 2020 1495 HKG
Compiled by Download KML
4 days ago 40 maps 100%
(40 maps)
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