For the requests that provide image output, Sentinel-2 WMS/WMTS/WCS services can generate these output formats:

• image/png - lossless image format for 1 (grayscale) or 3 (RGB) components
• image/jpeg - lossy image format for 1 (grayscale) or 3 (RGB) components, without alpha channel. The quality can be controlled via the "QUALITY" URL parameter.
• image/tiff - lossless image format for any number of the components.

For the requests that provide vector output, Sentinel-2 WMS/WMTS/WCS services can generate these output formats:

• application/x-esri-shape - zip containing shape files
• application/json - GeoJSON file

Both formats return polygons only when the image has no more than 10 different values. Therefore, these formats work only with custom script layers.

For example requests, refer to Sentinel Hub's documentation on Output Formats.