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!


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
Bronx 1905 Annexed District George W. and Walter S. Bromley Published by G. W. Bromley and Co. in 1905
1905 1 minute ago 7 control points
2020 3 minutes ago Unrectified
Bronx 1905 Annexed District George W. and Walter S. Bromley Published by G. W. Bromley and Co. in 1905
1905 13 minutes ago 5 control points
See all maps

Recent Mosaics

Mosaic Title Year Last Updated Number of Maps Percentage Complete
Queensvol2 01 Queens V.2 1908 Long Island City
Queens 1908 Vol 2, New York Published by E. Blecher Hyde Map Co. in 1908 Compiled by AlanL. Download KML
1908 2 days ago 25 maps 56%
(14 maps)
Queensvol2 17 Queens V. 2 1927
From Queens 1927 Vol 2, New York Published by E. Belcher Hyde Map Co. in 1927 Atlas of the Borough of Queens Compiled by AlanL. Download KML
1927 3 days ago 12 maps 100%
(12 maps)
Ohv 4th page 2 OR/WA OHV
Compiled by Steven Beardsley. Download KML
4 days ago 35 maps 100%
(35 maps)
View all Mosaics
Create a new mosaic