Map Warper

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NOTICE: is currently in read only mode so the system cannot accept further uploads and edits. We apologize for the inconvenience. Okay


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!

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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
1874 atlas of east boston chelsea revere and winthrop plate e
1874 East Boston Chelsea Revere and Winthrop - Hopkins Atlas PLATE E Photoshopped / Aligned for Mapjunction by Rory McCarthy (In 1 layer)
over 3 years ago 36 control points
over 3 years ago 103 control points
1891 ma mrsid west   david rumsey
(In 1 layer)
over 3 years ago 58 control points
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Recent Mosaics

Mosaic Title Year Last Updated Number of Maps Percentage Complete
1891 ma mrsid west   david rumsey 1891 MA Walker Atlas - David Rumsey
Mosiac of East and West portions Compiled by Mapjunction. Download KML
1891 over 3 years ago 4 maps 100%
(4 maps)
Missing 1875 Atlas of Brighton - Hopkins and Co.
1875 Atlas of Brighton - Hopkins and Co. 00m___ Photoshopped / Aligned for Mapjunction by Rory McCarthy on Compiled by Mapjunction. Download KML
1875 over 4 years ago 2 maps 100%
(2 maps)
Missing 1922 MA Walker Atlas
1922 Walker Lithograph & Publishing Co. 00m060 Aligned for Mapjunction by Anastasia Lavrenteva on Compiled by Mapjunction. Links: Source / Biblio Ref Download KML
1922 over 4 years ago 25 maps 96%
(24 maps)
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