Great website to convert files.

This website come with great tools and conversion tool.
You can paid or used free like VISITOR or MEMBER - if you register your user will have 1 GB maximum file size.
The price can be from free up to: 1m Unlim PASS /$29.99 Any type of files like: archives, audios, documents, eBooks, images, presentations, videos can be converted.
You also can deal with tools for PDF like: unlock , OCR, compress ...  
One simple example: I converted 9.34 Mb .avi file to 14.51 Kb .swf file. and it's working well for free account - VISITOR.

For documents we have this formats:

Format		Description
	CSV	Comma-Separated Values
	DOC	Microsoft Word Document
	DOCX	Microsoft Office Open XML
	HTML	HyperText Markup Language
	ODT	ODF Text Document
	PDF	Portable Document Format
	RTF	Rich Text Format
	TXT	Plaintext Text File
	XLS	Microsoft Excel Worksheet Sheet (97-2003)
	XLSX	Office Open XML Worksheet Sheet

This website don't convert 3D objects and meshes.