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 €460 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

Search for
Year

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Last Rectified Maps

Map Title Year Last Updated Status
63d11sw24d00
1963 33 minutes ago 4 control points
T600 213sw16 196600
1966 about 1 hour ago 4 control points
63d11sw24c00
1963 about 1 hour ago 4 control points
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Recent Mosaics

Mosaic Title Year Last Updated Number of Maps Percentage Complete
Img 3144 1800 (s) Van Alen Greenbush variant
the 1800 map is based on the 1790 map. the modifications seem to consist of notes and addition of roads. the original was made by John Van Alen, it is unclear who made the notes. the map is preserved in the Van Rensselaer family survey records in New York State Library Special Collections Compiled by Richard Welty. Links: Source / Biblio Ref Download KML
1790 about 9 hours ago 6 maps 100%
(6 maps)
Img 0034 census total
Compiled by Prudence Hajmeli. Download KML
about 11 hours ago 2 maps 50%
(1 map)
83106 202401 02 2024 131 HKG
Compiled by Wright.one. Download KML
1 day ago 142 maps 100%
(142 maps)
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