# crane index filter > Modifies a remote index by filtering based on platform. > More information: . - Modify remote index: `crane index filter` - Specify the platform(s) to keep from base in the form `os/arch/variant:osversion,platform`: `crane index filter --platform {{platform1 platform2 ...}}` - Tag to apply to resulting image: `crane index filter {{[-t|--tags]}} {{tag_name}}` - Display help: `crane index filter {{[-h|--help]}}`