Here is free online tool to convert any document to pdf and pdf to word, excel, rich text even you can extract the image from the document. It is free, safe and will convert the document accurately. You can convert your document which is in you PC and even online. Just need to put the URL of the online document.
Document to PDF
and so many other formats
PDF to others
While converting the document, no need to put you email id. You can even put the password to protect your document. Just press convert your file button, it will take 30 to 40 second (depending upon the file size) to convert your document and after that you will find download your file option below of the convert your file button.
You can remove the file from their server by clicking on the remove your file. Just one limitation with this tool is that if you want to convert another document, you need to wait for thirty minutes after thirty minutes you can covert another document.