Aerial ortofoto tile (256×256 web-mercator JPEG)

Zoom level (0–21), web-mercator XYZ scheme.

Tile column, 0 ≤ x < 2^z.

Tile row, 0 ≤ y < 2^z (0 at the north edge).

Capture year of a past årgang (see /v1/orto/aargange). Omit for the current mosaic. Every layer published for that year is tried, finest resolution first (since 2017 a year has both a 10 cm and a 12,5 cm layer, and they cover different ground); the response headers name the one that answered. A year the service does not publish is a 400; a year none of whose layers COVER this tile is a 404. Never a silent fallback to the current imagery.

Pixel density to render the tile at: 1 (default) returns 256×256, 2 returns the SAME geographic tile at 512×512 for a retina screen. It is not a zoom — the tile covers the same ground either way, so a client may mix the two and place them identically. Still one metered call. Any other value is a 400.