Formats build options?

[blap-o]

I have read the Build documentation and I know a couple of image formats can easily be disabled during build by using the different build options like -C jpeg2000=disable.

But Pillow supports 30+ image formats, and only a small part seem to be available as build option toggles.

Is it only possible to enable/disable the formats described in the Build options documentation?

[nulano]

These options are for enabling/disabling third-party dependencies, not image formats.
Some third-party dependencies are only required for a single image format, others are used for multiple image formats.
However, many image formats supported by Pillow have no third-party dependencies and so there is no such flag to disable them at build time.
If you'd like to disable them at run time, have a look at the formats parameter to Image.open.