#https://wiki.openstreetmap.org/wiki/Tile_servers
# https://tile.thunderforest.com/
# basemaps.cartocdn
https://note.pcwu.net/2017/03/31/js-leaflet-maps/
Service public info: https://carto.com/location-data-services/basemaps/ The structure of the URLs to call the service is the following: https://{s}.basemaps.cartocdn.com/{style}/{z}/{x}/{y}{scale}.png , where:
{s}: one of the available subdomains, either [a,b,c,d]
{z} : Zoom level. We support from 0 to 20 zoom levels in OSM tiling system.
{x},{y}: Tile coordinates in OSM tiling system
{scale}: OPTIONAL "@2x" for double resolution tiles
{style}: Map style, possible value is one of:
light_all,
dark_all,
light_nolabels,
light_only_labels,
dark_nolabels,
dark_only_labels,
rastertiles/voyager,
rastertiles/voyager_nolabels,
rastertiles/voyager_only_labels,
rastertiles/voyager_labels_under
# xml
<!DOCTYPE connections>
<qgsXYZTilesConnections version="1.0">
<xyztiles url="https://a.basemaps.cartocdn.com/light_nolabels/{z}/{x}/{y}{r}.png" username="" zmax="18" referer="" password="" name="basemap-light-nolabels" authcfg="" zmin="0"/>
<xyztiles url="https://a.basemaps.cartocdn.com/light_all/{z}/{x}/{y}{r}.png" username="" zmax="18" referer="" password="" name="basemap-light_all" authcfg="" zmin="0"/>
<xyztiles url="https://tile.opentopomap.org/{z}/{x}/{y}.png" username="" zmax="18" referer="" password="" name="opentopomap" authcfg="" zmin="0"/>
<xyztiles url="https://a.basemaps.cartocdn.com/rastertiles/voyager/{z}/{x}/{y}{r}.png" username="" zmax="-1" referer="" password="" name="rastertiles-voyager" authcfg="" zmin="-1"/>
<xyztiles url="https://a.basemaps.cartocdn.com/rastertiles/voyager_nolabels/{z}/{x}/{y}{r}.png" username="" zmax="18" referer="" password="" name="rastertiles-voyager_nolabels" authcfg="" zmin="0"/>
<xyztiles url="https://tile.thunderforest.com/cycle/{z}/{x}/{y}.png?apikey=****" username="" zmax="18" referer="" password="" name="thunderforest-OpenCycleMap" authcfg="" zmin="0"/>
<xyztiles url="https://tile.thunderforest.com/outdoors/{z}/{x}/{y}.png?apikey=****" username="" zmax="18" referer="" password="" name="thunderforest-Outdoors" authcfg="" zmin="0"/>
<xyztiles url="https://tile.thunderforest.com/landscape/{z}/{x}/{y}.png?apikey=****" username="" zmax="18" referer="" password="" name="thunderforest-landscape" authcfg="" zmin="0"/>
<xyztiles url="https://tile.thunderforest.com/transport/{z}/{x}/{y}.png?apikey=****" username="" zmax="18" referer="" password="" name="thunderforest-transport" authcfg="" zmin="0"/>
<xyztiles url="http://mt2.google.cn/vt/lyrs=y&scale=2&hl=zh-CN&gl=cn&x={x}&y={y}&z={z}" username="" zmax="18" referer="" password="" name="谷歌卫星地图" authcfg="" zmin="0"/>
<xyztiles url="http://mt2.google.cn/vt/lyrs=m&scale=2&hl=zh-CN&gl=cn&x={x}&y={y}&z={z}" username="" zmax="18" referer="" password="" name="谷歌街道地图" authcfg="" zmin="0"/>
<xyztiles url="http://wprd01.is.autonavi.com/appmaptile?x={x}&y={y}&z={z}&lang=zh_cn&size=1&scl=1&style=7" username="" zmax="18" referer="" password="" name="高德地图" authcfg="" zmin="0"/>
<xyztiles url="http://a.tile.openstreetmap.org/{z}/{x}/{y}.png" username="" zmax="19" referer="" password="" name="OpenStreetMap" authcfg="" zmin="0"/>
</qgsXYZTilesConnections>