... and reduce the screen response to a slow crawl through treacle. But the result isn't very pretty or comfortable to work over: 1. map tiles as loaded: 2_241521_110000000.png It can also be confusing -- see for example how the platform edge has merged with the rail above. A few updates back I added a function to reduce the contrast of map images when working over them, which makes it a lot easier to see what you are doing -- here on the left: 2. low-contrast converted original: 2_241521_120000001.png But it still doesn't match the screenshot captures from smooth browser resampling. So I have found some old resampling code from Anders Melander which could be used in Templot, as a one-time conversion on the background shapes. It's very slow, several seconds per tile, but only needs to be done once. The difficulty is that there are 7 different resampling algorithms available, with varying degrees of smoothing and speed, and each one can have an adjustable edge-effect setting. Mostly they are optimised for colour photographs, ...