Hi GITNE,

The maximum level is 17.

At the moment the update period is 10 minutes for tiles from level 9 to level 17, and 1 hour for level 0 to level 17.

The tiles are served in an AWS S3 bucket. After a quick search I didn’t find a way to return a transparent image for empty tiles. Do you think it possible to let JOSM show a transparent image when an empty tile is hit?

Thanks, Tao