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
Flowage 3
2019 34 minutes ago 3 control points
2019 36 minutes ago 5 control points
Publication date 1881 Topics Real property, Cities and towns Publisher Boston : Fuller and Whitney Collection normanbleventhalmapcenter; bostonpubliclibrary; americana Digitizing sponsor Boston Public Library Contributor Boston Public Library Language English "August 1881." Blueprints Six folded maps show the Back Bay in 1814, 1836, 1851, 1861, 1871 and 1881 Includes monthly schedules of deed transfers, land fills, and improvements for the year 1881 At front: three advertisements 2 blueprints and 1 printed for Fuller & Whitney's catalog of schedules, supplementary schedules and Back Bay plans Notes No title page found. No copyright page found. No table-of-contents pages found. Call number G1234.B6:2B2.F9 1881 Camera Canon EOS 5D Mark II Foldoutcount 0 Identifier setofplansshowin00full Identifier-ark ark:/13960/t2k662164 Ocr ABBYY FineReader 8.0 Openlibrary_edition OL25518740M Openlibrary_work OL16898293W Page-progression lr Pages 73 Ppi 200 Scandate 20130424170640
1836 about 1 hour ago 47 control points
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Recent Mosaics

Mosaic Title Year Last Updated Number of Maps Percentage Complete
North park groomed snowmobile trails Colorado Snowmobile
Compiled by Jeremy S. Download KML
2 days ago 51 maps 96%
(49 maps)
88d1cf1c a698 4ad9 a212 1d852680f29b Canadian Northern Western
Compiled by Bjorn Harpe. Download KML
3 days ago 22 maps 100%
(22 maps)
Lp005506 page 001 117A and 117B Parish of Nunawading
Compiled by Anne Jones. Download KML
3 days ago 2 maps 100%
(2 maps)
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