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!

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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!


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

Mapwarper Tutorial & Spatial Humanities Workshop by Lincoln Mullen
Lincoln Mullen has written a great series of workshops on the Spatial / Digital Humanities over five days. Day 3 is focused around Georectification with and is a very... read more

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Last Rectified Maps

Map Title Year Last Updated Status
Dji 0003
otra cuadra de chitaraque
2018 about 3 hours ago 4 control points
Nla.obj 233550418 1
Date : 6/10/17 9:29 PM Out of Copyright Reason for copyright status: Created/Published Date is Before 1955 Copyright status was determined using the following information: Material type: Literary Dramatic Musical Published status: Published Publication date: 1933 Government copyright ownership: No Government Copyright Ownership Copyright status may not be correct if data in the record is incomplete or inaccurate. For more information regarding Copyright in Library Collections visit and The National Library of Australia supports creativity, innovation and knowledge-exchange but does not endorse any inappropriate or derogatory use. Please respect indigenous cultural and ethical concerns.
2018 about 5 hours ago 61 control points
Dji 0001
Foto de drone parque de Chitaraque
2018 about 5 hours ago 4 control points
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Recent Mosaics

Mosaic Title Year Last Updated Number of Maps Percentage Complete
Rocque co 4.3 corr rot rgb Dublin City 1757 John Rocque
Dublin City and Environs,1757, John Rocque Compiled by Brian Hollinshead. Links: Source / Biblio Ref Download KML
1757 about 8 hours ago 2 maps 100%
(2 maps)
Zama 03 10 Paramount Zama
Pipeline Inspection Compiled by MapLegend. Download KML
about 12 hours ago 4 maps 100%
(4 maps)
South valley park colorado parks
Compiled by Jeremy S. Download KML
about 13 hours ago 8 maps 100%
(8 maps)
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