... the upscaling is increased it's not so clear-cut. Going up to 720x720 pixels per tile instead of 512x512, the preference maybe swaps to the less intense "Triangle" interpolation (3. below), and "Spline" (4.) is a bit too fuzzy. To confuse the issue further I swapped to the "bright night" colour scheme for the template: 2_250612_120000000.png Zooming out to the more usual browser size, the differences are not so obvious. But we don't do track design at this level: 2_250612_120000001.png We could go higher than 720x720, but memory usage increases dramatically, and screen response speed suffers. Maps can easily have 100 tiles or more. I can also have a fresh think about the low-contrast functions. Maybe with the more intense interpolations it would actually be better to increase the contrast, for a cleaner background? It seems clear that it's worth doing something to improve on the original loaded tiles, but deciding exactly what to do is tricky. And that's just for the 25" maps. There are ...