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 (May) there has been about €360 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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Last Rectified Maps

Map Title Year Last Updated Status
Maps sanborn denver 1929 vol2 293
Denver 1929 Sanborn volume 2, sheet 293 (In 1 layer)
1929 11 minutes ago 5 control points
Maps sanborn denver 1929 vol2 294
Denver 1929 Sanborn volume 2, sheet 294 (In 1 layer)
1929 16 minutes ago 4 control points
1860s hi res northern somerset county
2026 34 minutes ago 148 control points
See all maps

Recent Mosaics

Mosaic Title Year Last Updated Number of Maps Percentage Complete
Maps sanborn denver 1929 vol1 075 Denver 1929 Sanborn
Compiled by Dennis. Links: Source / Biblio Ref Download KML
1929 about 1 hour ago 194 maps 100%
(194 maps)
Van alen 1790 1 4 1790 Van Alen Greenbush
Compiled by Richard Welty. Download KML
1790 about 1 hour ago 2 maps 100%
(2 maps)
6447 malaysia  kuala lumpur 63.36k 94 master Malaysia L7010 series (1960s)
Compiled by Zh9567. Download KML
about 7 hours ago 74 maps 96%
(71 maps)
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