Hi Friends, I saw your reply regarding epub validator in some site. I am an absolute newbie in this field. Every where I got the link http://code.google.com/p/epubcheck/ , but i don't know how to use the downloaded files from there. Do you can give me a helping hand. My requirement is to how to do validate ePub file in php using same thing. we intended to do same for our web site. I am waiting your reply. You can reply in email : anes.pa@gmail.com Thankfully Anes