Ciao Marc

Il existe de nombreuses orthophotos de Genève. ID propose des photos
de 2014 à 2024 qui fonctionnent bien.

The orthophotos in ID come from https://github.com/osmlab/editor-layer-index/blob/gh-pages/sources/europe/ch/Canton_de_Geneve_orthophoto2023_10cm.geojson?short_path=ceb44bd

Les préférences de JOSM proposent aussi des orthophotos de Genève,
mais elles ne fonctionnent pas quand je les active.

In JOSM they are loaded based on https://josm.openstreetmap.de/wiki/Maps/Switzerland#CantonofGeneva5cmSITG2019

These entries do *not* show the same thing.
But, loading "https://raster.sitg.ge.ch/arcgis/rest/services/ORTHOPHOTOS_2023_EPSG3857/MapServer/tile/{zoom}/{y}/{x}” (given by Editor Layer Index) as TMS in JOSM also doesn’t work, giving me an error “Downloading Tiles” with something like “SSL.Handshake exception”.

Loading https://raster.sitg.ge.ch/arcgis/rest/services/ORTHOPHOTOS_2023_EPSG3857/ in a browser leads me to a login page, maybe that’s the reason...
Unfortunately, that’s all that I can offer as insight, maybe some mover layer-versed people can chime in.

Happy mapping otherwise,
Habi