Best tool to recover PDF file data from corrupt and damaged PDF files. Kernel for PDF repair software helps every user whose PDF file gets corrupt due to reasons like virus attacks, file corruptions, disk errors, damage due to power outage and unexpected system shutdown, freezing PDF files, and error messages like File is corrupt or damaged, there was an error opening this document. The root object is missing or invalid. Kernel for PDF repair scans many PDF files in one repair cycle and successfully recovers text, hyper-links, document formatting, tables, cells, bookmarks, comments, word art, Unicode characters, images and every other object which exists in the corrupt PDF file. It then rebuilds a new PDF file and does not modify the original PDF file. The free demo version of the software performs every function and rebuilds new pdf file with recovered data where it displays data on alternate pages of the document only. Other pages are left blank by the demo version. Software supports PDF file repair for every PDF file on every Operating System; Windows 7, Vista, XP, 2008, 2003, and 2002.