Global Mapper v25.0

Resampling with Webtile export not working

Hi guys,

(sorry, I posted this accidentality already in Feature Discussion, but it belongs here)

I need to create webtiles from Tif-files. Here is a sample, which reproduces this effect:

- So I load the tif
- set resampling to Bicubic and
- export to OSM tiles

result is always the same, main level is fine, but I need 10 smaller levels too and they are just resampled with nearest neighbour, so looking rather ugly.

Using GM 22.1, any ideas?
Thanks Tom


  • bmg_bob
    bmg_bob Global Mapper Programmer
    Hello Tom,

    I suggest that you contact Blue Marble Support directly via email ( with regard to this problem. Please include a detailed description of your workflow, including a screen capture of the options you use for the export, and the link to your source file. Thank you.

  • Hi Bob,

    thanks for answering.

    I did call support already, but didn't get any useful answer.
    Its kind of an urgent project, so I was hoping somebody here knows the trick, but after spending again some hours on this today its maybe a bug?