Web Batch Downloader

Bulk download PDF files from Tophqbooks

TopHQBooks.com is a PDF search engine over fiv including 5 million free PDF, also programming books, computer picture making technology books,etc.
Set download format : pdf; your speed and computer configuration allows to set the number of threads to 100, speed can be quicker.
Fill the start url : www.tophqbools.com, set "crawl depth": 7 (or other), click Start.
Your specified pdf files will be downloaded to your hard drive.