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

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
Maps sanborn denver 1929 vol2 272i
Denver 1929 Sanborn volume 2, sheet 272 inset (In 1 layer)
1929 about 1 hour ago 3 control points
Maps sanborn denver 1929 vol2 271
Denver 1929 Sanborn volume 2, sheet 271 (In 1 layer)
1929 about 1 hour ago 4 control points
Belfort 1905
1905 about 1 hour ago 8 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 142 maps 100%
(142 maps)
1zc3760090471 upstate NY, 1952 Aerial
imagery from a 1952 Aerial Imagery Pass from USGS earth explorer Compiled by Richard Welty. Download KML
1952 about 19 hours ago 396 maps 100%
(396 maps)
Nl hahga 8800 01 0132 8 omgeving Den Haag 1952
Compiled by Tethys_. Download KML
1 day ago 5 maps 100%
(5 maps)
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