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
Gr diria municipal
MTI-GR-Diria-Municipal, MTI, GR, Diria, Granada, Nicaragua
2012 about 3 hours ago 8 control points
Gr granada municipal
MTI-GR-Granada-Municipal, MTI, GR, Granada, Nicaragua,
2012 about 3 hours ago 11 control points
Map of paris by truschet and hoyau   basel university library ircajdgu
Title La ville, cité et Université de Paris Description Map of Paris by Truschet and Hoyau Date 1550s Source 10.3931/e-rara-20453 : Info: Kartenportal.CH Creator Olivier Truschet Germain Hoyau
1550 about 4 hours ago 91 control points
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Recent Mosaics

Mosaic Title Year Last Updated Number of Maps Percentage Complete
Den90055 Denver 1890 Sanborn CU
1890 Sanborn Atlas of Denver volumes 1 and 2 Compiled by Dennis. Links: Source / Biblio Ref Download KML
1890 about 11 hours ago 81 maps 100%
(81 maps)
Ark1 weglarza
Compiled by dYNX. Download KML
6 days ago 3 maps 100%
(3 maps)
Iiif service gmd gmd409m g4094m g4094gm g4094gm g02345194501 02345 01 1945 0001 full pct 25 0 default  1 Gary Sanborn Map 2-11
Compiled by GullibleMappazo. Download KML
1945 7 days ago 10 maps 100%
(10 maps)
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