[gdal-dev] Space optimization of OSM XYZ tiles

[Laurențiu Nicola]

Hi Eric,

Yes, you can transcode them on the fly with a server like https://github.com/developmentseed/titiler. I haven't used that one, but wrote a prototype of something like that in the past.

You might want to have the original in EPSG:3857, though, to avoid the need to reproject the tiles when loading them, but doing it on-the-fly is also possible in theory.

Laurentiu

On Thu, May 25, 2023, at 07:28, Eric Knudstrup via gdal-dev wrote:
> I've just begun experimenting with adding a mosaic of GeoTIFFs to a 
> smartphone application that needs to be available offline.
> I was wondering if the transcoding could be done on demand on the 70Mb 
> GeoTIFFs rather than having to store hundreds of megabytes of PNG files.
> Or are there other optimizations that could be done.
> These particular files don't need zoom levels higher than 12.
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