Is it possible to reduce the size of output PDF file?
Yes. By default HTML2PS embeds fonts used during conversion in the generated PDF. You may disable this option by setting ’embed’ attribute to ‘0’ for these fonts in html2ps.config. Note that it will probably cause problems with national symbols on older versions of Acrobat Reader; also, this assumes that users have all fonts used in PDF files on their machines. Also, refer to the description of FONT_EMBEDDING_MODE configuration constant.