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 2025 as of 19 Nov there has been about €496 donated. We're almost reached the year goal and have passed the halfway mark, thank you! 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

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Last Rectified Maps

Map Title Year Last Updated Status
Hidden falls regional park trail system  pdf
2026 about 5 hours ago 3 control points
Screenshot 2026 01 18 at 01 04 58 brooklyn    aug 22 to 27 1776  november 2020 .pdf
2026 about 6 hours ago 4 control points
Screenshot 2026 01 17 at 23 35 30 fredericksburg  sunken road  december 13 1862  april 2024 .pdf
2026 about 6 hours ago 4 control points
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Recent Mosaics

Mosaic Title Year Last Updated Number of Maps Percentage Complete
Maps1 11028 full  1 Sanborn- Hatboro-1922
Fire risk assessment--Pennsylvania--Hatboro--Maps ; Real property--Pennsylvania--Hatboro--Maps ; Hatboro (Pa.)--Maps. Partial cadastral map. Title from title sheet. Sheets 2-3 printed at scale [ca. 1:600]. Title sheet (sheet 1) includes index to streets and specials, location map, and adjoining sheets index map. Some sheets include multiple sections; sections have various orientations. Population 1500. Compiled by AlexMyers. Links: Source / Biblio Ref Download KML
1922 about 6 hours ago 9 maps 100%
(9 maps)
P4005coll10 1041 full 1934 State of Connecticut Aerial Survey
Compiled by Relics. Links: Source / Biblio Ref Download KML
1934 about 6 hours ago 41 maps 59%
(24 maps)
Nypl.digitalcollections.510d47e2 554c a3d9 e040 e00a18064a99.001.g New York City, borough of Manhattan, Bromley 1902
Compiled by Vahan. Download KML
1902 1 day ago 111 maps 100%
(111 maps)
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