Map Warper

Log In Create Account


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!


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

Mapwarper Tutorial & Spatial Humanities Workshop by Lincoln Mullen
Lincoln Mullen has written a great series of workshops on the Spatial / Digital Humanities over five days. Day 3 is focused around Georectification with and is a very... read more

Search for

browse all maps

Last Rectified Maps

Map Title Year Last Updated Status
1qbe 8uwn1chvaqyofylsqm1vvillgbik clyteqrz
2018 41 minutes ago 14 control points
Oie transparent nmcbzlod
2018 about 1 hour ago 7 control points
Lj%c3%b8ner 25000
terrengkart av Ljøner i Hedmark 1:25000
2018 about 6 hours ago 25 control points
See all maps

Recent Mosaics

Mosaic Title Year Last Updated Number of Maps Percentage Complete
Palosverdes colorado parks
Compiled by Jeremy S. Download KML
about 15 hours ago 159 maps 99%
(157 maps)
Pike peak ranger district mvum Colorado MVUM
Compiled by Jeremy S. Download KML
3 days ago 5 maps 100%
(5 maps)
Mbc01227 straubes neuester plan von berlin mit praktischem fu%cc%88hrer plan res150sharp mosaic belrin
Compiled by daan. Download KML
7 days ago 1 map 100%
(1 map)
View all Mosaics
Create a new mosaic