Map Warper

Log In Create Account
Update July 2020: Ran out of disk space. Maps older than 2 years will need re-warping to work. Downtime will happen again.


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!

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 for more information!


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 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

What’s coming to – new stuff! is getting an upgrade of code early this first week in April. New things: Keyboard shortcuts New JSON-API and docs Map caching for faster maps Bigger map windows Upgraded... read more

Search for

browse all maps

Last Rectified Maps

Map Title Year Last Updated Status
Export dvm rdno 1
2021 24 minutes ago 5 control points
Ormiston tc
2021 about 3 hours ago 3 control points
Subdivision plan kap1425
2021 about 5 hours ago 5 control points
See all maps

Recent Mosaics

Mosaic Title Year Last Updated Number of Maps Percentage Complete
Missing 039-9108
Airphoto Greece 1944 Compiled by P.K. Doorn.
1944 1 day ago 0 maps 0%
(0 maps)
Missing Kedzierzyn
Kedzierzyn Compiled by Fasha4. Download KML
3 days ago 2 maps 50%
(1 map)
M kwavbpxz Adelaide, South Australia - Kingston 1842
Mosaic of four higher resolution images (down a level from the top in the display). Compiled by Links: Source / Biblio Ref Download KML
1842 3 days ago 4 maps 100%
(4 maps)
View all Mosaics
Create a new mosaic