how can i convert a pdf file to other formats such as image format?
google: (many options)
http://www.google.com/#hl=en&q=convert+pdf&aq=f&oq=&aqi=g10&fp=KxYPMM6r3XA
(image format: jpg)
If you want a truly cross-platform solution, you can use a Java library such as ICEpdf to convert a PDF into a series of images.
Here is an example on how to achieve that from their documentation:
There is another Java example which is used by Adobe to do this in ColdFusion at http://www.jpedal.org/support_egHiRes.php
There are also numerous online services (many free) if you just want to convert a few PDFs.
You should also look at ImageMagick as another possible solution.
Actually there is so many ways to convert PDF to other formats. If you just wanna convert it to jpeg, you can just use the "print screen key". But if you have more requests, you wanna convert PDF to other formats,you can convert it with AnyBizSoft PDF converter, it works well for me. you can convert PDF into many formats: Word, Excel, PowerPoint, HTML or Text.