Map Warper

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Update Nov 2021: Ran out of disk space, again. Downtime will happen again. Please try to delete your maps (edit tab) after you are done with them for other users.


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
1938 feb 8 bucks 020838 ard577
2022 about 3 hours ago 3 control points
Ferrocarril de el espartal
2022 about 3 hours ago 1 control point
Dob maps 18 tmnhjiqe
2022 about 4 hours ago 3 control points
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Recent Mosaics

Mosaic Title Year Last Updated Number of Maps Percentage Complete
Plate 02 Denver 1905 Baist
Baist's real estate atlas of surveys of Denver, Col.: complete in one volume Compiled by Dennis. Links: Source / Biblio Ref Download KML
1905 about 22 hours ago 4 maps 100%
(4 maps)
S19 plan druk o 3.5 S19 Sokołów-Jasionka
Compiled by AndyB66. Download KML
2022 1 day ago 3 maps 100%
(3 maps)
Pafta1 istanbul demo
Compiled by soho. Download KML
3 days ago 1 map 100%
(1 map)
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