overlay maps: the only ones that show somthing are the one "stamen"

[gioman]

All the others... blank result.

[volaya]

the layer is defined like this

var overlayLayers = [new ol.layer.Tile({ type: 'base-overlay', title: 'Hydda roads and labels', source: new ol.source.XYZ({ crossOrigin:'anonymous', url: 'http://s.tile.openstreetmap.se/hydda/roads_and_labels/{z}/{x}/{y}.png' }), projection: 'EPSG:3857' })

Notice the crossOrigin:'anonymous',

However, in the console I see this:

Access to Image at 'http://s.tile.openstreetmap.se/hydda/roads_and_labels/3/5/3.png' from origin 'null' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'null' is therefore not allowed access.

@bartvde, any idea?

[volaya]

Looks like it is not considering that declared origin

[bartvde]

it looks like those tiles don't allow for CORS?

[bartvde]

yeah see here:

so @volaya we should probably check which ones have CORS headers and only add crossOrigin: 'anonymous' for those definitions

It probably means those layers cannot be used for printing. That might require some docs.

[volaya]

ok, so i should remove the crossOrigin anonimous property, and tell @aneto to document that, right?

[bartvde]

for all tile providers that do not have CORS headers, yes

[volaya]

this should be fixed now