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 €80 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
Gemini high level gsl map
GSL
2026 1 minute ago 2 control points
09064 1952 9 0033
2026 3 minutes ago 18 control points
09064 1952 9 0030
2026 13 minutes ago 20 control points
See all maps

Recent Mosaics

Mosaic Title Year Last Updated Number of Maps Percentage Complete
Nsarea map PNW NO SHOOTING
Compiled by xavier@fahndrich.com. Download KML
about 18 hours ago 2 maps 100%
(2 maps)
Iiif service gmd gmd380m g3804m g3804bm g3804bm g057721912 05772 1912 0001 full pct 25 0 default 1912 Berlin NY Sanborn Insurance Map
both plates from 1912 Sanborn map of Berlin NY Compiled by Richard Welty. Links: Source / Biblio Ref Download KML
1912 about 24 hours ago 2 maps 100%
(2 maps)
Chalatenango el salvador 50k 1983 USGS OpenTopo map Series E751 Nicaragua 1:50k by USGS under CCL
USGS OpenTopo map Series E751 Nicaragua 1:50k by USGS under CCL, USGS, OpenTopo, E751, OSM Compiled by miluethi. Links: Source / Biblio Ref Download KML
1986 1 day ago 279 maps 100%
(279 maps)
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