Usage: xsltproc [options] stylesheet file [file ...]
   Options:
	--version or -V: show the version of libxml and libxslt used
	--verbose or -v: show logs of what's happening
	--output file or -o file: save to a given file
	--timing: display the time used
	--repeat: run the transformation 20 times
	--debug: dump the tree of the result instead
	--dumpextensions: dump the registered extension elements and functions to stdout
	--novalid skip the DTD loading phase
	--nodtdattr do not default attributes from the DTD
	--noout: do not dump the result
	--maxdepth val : increase the maximum depth (default 10000)
	--maxvars val : increase the maximum variables (default 15000)
	--maxparserdepth val : increase the maximum parser depth
	--huge: relax any hardcoded limit from the parser
	             fixes "parser error : internal error: Huge input lookup"
	--seed-rand val : initialize pseudo random number generator with specific seed
	--html: the input document is(are) an HTML file(s)
	--encoding: the input document character encoding
	--param name value : pass a (parameter,value) pair
	       name is a QName or a string of the form {URI}NCName.
	       value is an UTF8 XPath expression.
	       string values must be quoted like "'string'"
 or	       use stringparam to avoid it
	--stringparam name value : pass a (parameter, UTF8 string value) pair
	--path 'paths': provide a set of paths for resources
	--nonet : refuse to fetch DTDs or entities over network
	--nowrite : refuse to write to any file or resource
	--nomkdir : refuse to create directories
	--writesubtree path : allow file write only with the path subtree
	--catalogs : use SGML catalogs from $SGML_CATALOG_FILES
	             otherwise XML Catalogs starting from 
	         file:///etc/xml/catalog are activated by default
	--xinclude : do XInclude processing on document input
	--xincludestyle : do XInclude processing on stylesheets
	--load-trace : print trace of all external entites loaded
	--profile or --norman : dump profiling information 

Project libxslt home page: https://gitlab.gnome.org/GNOME/libxslt