I downloaded OLCI Level 1 products from the Copernicus Data Hub. I need to create a jpeg/png from the different bands of OLCI L1 product on Python. These files are NetCDF file providing an array with radiances for each pixels.
You can use pconvert directly from the command line. It is shipped along with SNAP. The usage is documented in the help.
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This should be accessible via the raster-menu in the GUI.