There are so many tools available for PDF on the net, some are very helpful to convert PDF files, Print them and convert them to other Format. Here are some of the Cool PDF tools which will help you to optimize them.
Free Cool PDF tools
1. PDFgeni- PDFgeni is a simple eBook search tool that helps you find free ebooks, PDF articles, free document templates, reports, data sheets, public papers, and pretty much any information that is stored in PDF format.
2. PrimoPDF will allow you to create PDF files from any printable document (.doc, images, text, web pages etc.). PrimoPDF installs as a virtual printer and is accessible from any program that offers a Print option. In addition to the standard features, it also offers the ability to optimize PDF output for printing to standard laser printers or for onscreen viewing. No watermark is added to the document, no limitations.
3. doPDF- doPDF is a free PDF converter software. The program installs as a virtual printer driver and can be accessed from any application that supports printing. Simply select the doPDF printer instead of your regular printer and the file will be converted and saved as PDF document. doPDF supports basic conversion features, including customizable resolution, page scaling, predefined page size and quality settings.
4. PDF Hammer is a website that allows you to edit your PDF files online for free. You don’t need to install any additional software, you can edit PDF documents right now inside your browser. Once you start, you will be able to upload one or more PDF files into your project, arrange the pages in any order you wish, and delete any pages you don’t want.
5. htm2pdf- Simply go to the htm2pdf site and enter either the URL of the page you’d like to convert or cut and paste the html code directly into a box and then click convert. Within seconds, you will have a downloaded PDF version of the webpage.
6. Issuu - Issuu is an new website which allows you to convert any PDF file to Online Books. Issuu is the place for online publications: Magazines, documents, and stuff you’d normally find on print. It’s the place where YOU become the publisher. Upload a document, it’s fast, easy, and totally FREE. Within seconds you’ll have a super cool online magazine you can post anywhere on the web and share instantly with your friends. Photographers can use it to show off their portfolios, regular folks for more interactive eBook reading experience and so on.
7. CutePDF Writer – a free, powerful application that can create professional quality PDF files from almost any printable document. CutePDF Writer (formerly CutePDF Printer) is the free version of commercial PDF creation software. CutePDF Writer CutePDF Writer is a free PDF creator. as a “printer subsystem”. This enables virtually any Windows applications (must be able to print) to create professional quality PDF documents – with just a push of a button!
8. Combine PDFs is a free Software which help you to merges multiple PDF files into one.
9. PDFfiller converts any pdf file into a graphical image and allows the user to add text anywhere. This site is designed to allow you to fill out any pdf form on-line. The process is really very simple and easy to use. Just upload the file or specify the location of the form. When the file is loaded, simply click on any place on the form and start typing.
10. PDF Search Engine is a simple and straight forward search tool for finding ebooks. You can either search from the website or use the provided search extension and add it to your Firefox search bar. Enter in the title you are looking for and it scour the world wide web displaying links to pdf files it comes across that matches your search term.

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Hello,
Did you test as well calameo.com ? calameo.com is much better than issu with integrated online video and audio file. Calameo.com can also convert any kind of files, which issu can not. I think calameo miss in your review.
Thank you for your feedback.
Bill
Thanks Bill for the Link.
I will review that one in my another List
Very useful! Thanks! Glad to see http://pdffiller in that list. It means we are not wasting time working there. )))
nice information … thank you
PDFZilla is a desktop application that quickly and accurately convert PDF files into editable MS Word Documents, Rich Text Documents, Plain Text Files, Images, HTML Files, and Shockwave Flash SWF Files. PDFZilla supports most of popular formats: DOC, RTF, TXT, BMP, JPG, GIF, PNG, TIF, HTML, SWF formats.
http://www.pdfzilla.com
another one–Tweak pdf to word.
Convert pdf to word easily fast and costs less.
try it in http://www.tweakpdf.com/