Map Warper

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Overview

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 tim@geothings.net for more information!

News

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 mapwarper.net
Mapwarper.net 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 Mapwarper.net – new stuff!
Mapwarper.net 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
Auburn Housing Problem Areas, 1958
Map created by seniors of the Department of City & Regional Planning of Cornell University in 1958. Digitized by William Hecht.
View Map | Rectify Map | Download KML
2025 7 days ago 35 control points
Schenectady Railroads
V1-16 (In 2 layers)
View Map | Rectify Map | Download KML
1926 24 days ago 3 control points
Schenectady Railroads
V1-17 (In 2 layers)
View Map | Rectify Map | Download KML
1926 24 days ago 3 control points
See all maps

Recent Mosaics

Mosaic Title Year Last Updated Number of Maps Percentage Complete
Schenectady Railroads (All lines)
Composite map of all railroads in Schenectady County covering the period 1915 to 1969 Compiled by Tom Gifford. Download KML 		10 days ago 112 maps 96%
(108 maps)
Schenectady Railroads (NY Central)
1916 with updates to 1966 Compiled by Tom Gifford. Download KML 		10 days ago 61 maps 100%
(61 maps)
Schenectady Railroads (B & M)
June 1928 with updates to 1965 Compiled by Tom Gifford. Download KML 		1928 10 days ago 11 maps 100%
(11 maps)
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