I am trying to create a wms tile cache in 900913 projection using Geoserver's Geowebcache extension. My data is in a PostgreSQL database in 4326 projection. Do I have to reproject my data to 900913(a.k.a. 3857) prior to seeding my tile layer in 900913?

1 Answer 1


No, but it will be faster if you do. And please use 3857 instead of 900913 which has been deprecated for a while now.

  • GeoServer's integrated GWC has a predefined gridset EPSG:900913 but not EPSG:3857 gridset. Perhaps GWC/GeoServer projects could show good example here.
    – user30184
    Apr 18, 2016 at 21:28
  • 1
    feel free to submit a pull request to fix it
    – Ian Turton
    Apr 20, 2016 at 8:27

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