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!

Support Mapwarper.net

This server costs about €600 per year. Your donations help to keep it running.

So far for 2026 (Feb) there has been about €156 donated.
In 2025 you donated 80% of the server costs, many thanks!
Please Donate via Paypal

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

Mapwarper.net emails improved
The Mapwarper.net server should be sending emails with the correct internals set up so they are less likely to end up in your spam inboxes now! For many weeks users... read more

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

Search for
Year

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Last Rectified Maps

Map Title Year Last Updated Status
Master gmd gmd379 g3790 g3790 ar104101
A Map of the country round Philadelphia including part of New Jersey, New York, Staten Island, & Long Island.
2026 43 minutes ago 20 control points
Quadro d unione catastale
2026 about 1 hour ago 3 control points
P17208coll17 4729 full
Sanborn Insurance maps of Minneapolis, MN, 1930. Vol. 5, plate 553
2026 about 2 hours ago 3 control points
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Recent Mosaics

Mosaic Title Year Last Updated Number of Maps Percentage Complete
Nypl.digitalcollections.510d47e2 554c a3d9 e040 e00a18064a99.001.g New York City, borough of Manhattan, Bromley 1902, Sanborn 1902
Compiled by Vahan. Download KML
1902 about 16 hours ago 343 maps 98%
(337 maps)
Titus cincinnati 3 Titus' atlas of Hamilton Co., Ohio : from actual surveys (towns/cities)
See also townships map: https://mapwarper.net/layers/2108 Compiled by Hayleox. Links: Source / Biblio Ref Download KML
1869 1 day ago 44 maps 43%
(19 maps)
Titus whitewater miami Titus' atlas of Hamilton Co., Ohio : from actual surveys (townships)
See also towns/cities map: https://mapwarper.net/layers/2105 Compiled by Hayleox. Links: Source / Biblio Ref Download KML
1869 1 day ago 14 maps 36%
(5 maps)
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