Go back to the drop down menu for choosing modern maps. The system currently in use for the Nationaalarchief is irritating me as I have to move the cursor all over the screen to go to my favourite map.

Jpeg2000 from Library of congrass works fine - could you add MrSID support as well?

See http://memory.loc.gov/cgi-bin/query/D?gmd:8:./temp/~ammem_SSrb::

Support for digital elevation models.

It would be great to end up with a georeferenced old map overlaid on top of an accurate digital elevation. You can see an example of this here - https://www.davidrumsey.com/view/georeferencer

If I try to use this WMS:
https://www.ogd.stadt-zuerich.ch/wms/geoportal/HistorischerUebersichtsplanderStadtZuerichum1900
(which works in QGIS), I get just the generic error msg "URL is not a valid WMS server (error loading WMS Capabilities)".
Sometimes it's a leading blank in the URL which gives the same error.

implement crowdsourcing bells and whistles: http://www.dlib.org/dlib/march10/holley/03holley.html

see fig. 8

until at least 3 control points are added to the map.

Ability to rename the title of map on the This Map page.

It would be great to permit digitizing/tracing of point, polyline, and polygon geometries once a map is georectified, then saving them. Old maps are the best source for approximate locations of places that no longer exist or have changed names. And they are virtually the only source for approximate locations of roads, rail, former river courses. With this feature, Georeferencer could fully support "historical mapathons," which will add a great volume to the historical geodata commons. Points would be highest priority, followed by lines and polygons.

It would be amazing to see the coordinates as you add control points so you can keep track of how accurately you are doing so.

Recommended UX would be to get rid of the coordinates tab and integrate the coordinates pane into the Side by Side and Overlay layouts. Clicking on a Coordinates icon would slide out the pane in the same manner that the other maps pane slides out.

Some images are divided into more than two pieces. It is quite a problem to divide it, because it is necessary to save the map between each subsequent split and then reload it.

i already georeferenced my .tiff to exact points with another tool, but i need to clip and crop only a portion of the map without loosing my georeference points, but when upload a .TIFF i can clip it but i must to georeference it again in this tool to be able to export and i dont want that.

Sometimes, the original file location and/or name and/or extension changes. It would be nice to alter this metadata on georeferencer.org

It would be helpful if the number of edits that each user commits was tracked and perhaps was encouraged through some benefits.

Also, it would be helpful to know how long it typically takes for edits to become permanent.

I'd like to have an embed code to publish in my website.
Share action are just social networks

It would be great to filter in API on "finished" status of a map, not only on review - and have information about when was a map finished and when it was reviewed.

Make it possible to un-register.
Why isn't there a normal contact email ?

This is for when you accidentally click something with your mouse and you don't even know what control point you changed, you just see it is skewed.

The ability to add parts of book map together like a puzzle on one map. (like Christopher Colles's book map of 1798). Presently I believe you can only compare maps by clicking on them separately.

Hi-

v4 is fantastic, thank you.

It would be great to trace things once we've georectified a map. http://geojson.io is a great too and is open source for drawing vectors and saving to GeoJSON, might be worth taking a look.

https://github.com/mapbox/geojson.io