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 (Oct) there has been about €380 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

3D time enabled historical streetscapes re.city Kartta Labs with Google Research
Kartta Labs and re.city was a really cool Google Research project that I was involved in a few years ago. It enabled users to view, interact and contribute to historical... read more

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

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Year

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Last Rectified Maps

Map Title Year Last Updated Status
Watersheds map 2018
2026 about 2 hours ago 4 control points
Sjplmaps 119 full
1880 Santa Clara County, Brainard Agricultural Atlas. Map No. 25 Santa Clara Valley.
1880 about 2 hours ago 26 control points
Sjplmaps 115 full
1880 Santa Clara County, Brainard Agricultural Atlas. Map No. 24. Saratoga Park. Original map was not to scale.
1880 about 3 hours ago 19 control points
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Recent Mosaics

Mosaic Title Year Last Updated Number of Maps Percentage Complete
Van alen 1790 1 4 1790 Van Alen Greenbush
Compiled by Richard Welty. Download KML
1790 about 3 hours ago 15 maps 100%
(15 maps)
Maps sanborn denver 1929 vol1 075 Denver 1929 Sanborn
Compiled by Dennis. Links: Source / Biblio Ref Download KML
1929 about 5 hours ago 201 maps 100%
(201 maps)
A1 98 PRUEBA 116
Compiled by Cartografía de Bogotá 2. Download KML
about 9 hours ago 3 maps 67%
(2 maps)
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