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
102219
1920 less than a minute ago 58 control points
Pre m longueuil
2026 12 minutes ago 22 control points
P17208coll17 5537 full
Sanborn Insurance maps of Minneapolis, MN, 1930. Vol. 7, plate 779
2026 42 minutes ago 3 control points
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Recent Mosaics

Mosaic Title Year Last Updated Number of Maps Percentage Complete
Nypl.digitalcollections.510d47e2 554c a3d9 e040 e00a18064a99.001.g New York City, borough of Manhattan, Bromley 1902, Sanborn 1902
Compiled by Vahan. Download KML
1902 1 day ago 200 maps 99%
(197 maps)
Mylapore Chennai CMA Masterplan - 2026
Chennai Metropolitan Area Masterplan 2026 prepared by the CMDA. Georeferenced mosaic of individual village level development plans. Compiled by Arun Ganesh. Links: Source / Biblio Ref Download KML
2026 3 days ago 2 maps 100%
(2 maps)
09064 1952 9 0005 Blackwell-1
Compiled by Marvin Hicks. Download KML
3 days ago 11 maps 100%
(11 maps)
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