Converting a PDF file into an HTML or a XML file has been made easy by a small useful utility called PDFTOHTML. PdftoHTml is a Xpdf based tool which can convert PDF files to HTML or XML format. PDFTOHTML also supports encrypted files and support for images in the PDF file by converting to PNG images files.

If you want to convert .chm file to .pdf file you need to install chm2pdf application.This is A Python script that converts CHM files into PDF files. The package supports batch conversion, command line, PDF security options, password protection and compression modes. The program has Explorer-like interface.

Under Linux, you can view a CHM file with the xchm viewer. But sometimes that’s not enough. Suppose you want to edit, republish, or convert the CHM file into another format such as the Plucker eBook format for viewing on your Palm.

If you’ve worked in Windows long enough, you have come across the .chm file format. This format is nothing more than a compressed html directory with an included index for easy viewing. Problem is, you can’t view these files in Linux without the help of another tool. And sometimes you want to be able view these files in another format.

If you want to convert audio files on Linux, Audio-convert-mod is worth a try. Audio-convert-mod is a simple and easy-to-use audio file converter. It supports many formats, includes: MP3, OGG, FLAC, WAV, AAC/MP4/M4A, MAC/Monkey’s Audio/APE, MPC (Musepack), WV (wavpack) etc. In addition, with Audio-convert-mod, you can also batch convert audio files.

MIME HTML or MHT is a standard way to combine the external resources, like images or sound files, that in normal browsing situation are linked externally (downloaded), into the same file as the HTML code, using MIME.

A few days ago I downloaded a video file (.flv) from a website. I wanted to convert the video from .flv to .avi (I know it’s not a free format, but I needed to). I searched over the Internet and found out about FFmpeg. FFmpeg is a command line tool used to convert multimedia files between formats. Not only it converts video files but it also converts audio files.

Gnac is a simple program for GNOME that allows you to convert audio files from one format to another. It is built atop of the Gstreamer media framework, meaning that you can import any files that Gstreamer is capable of playing and then output to Gnac’s supported formats for the conversion.

Say you just bought an Amazon Kindle or a Barnes and Noble Nook. You want to convert your eBook collection to .EPUB or .MOBI format. For this, install Calibre. The application not only provides you with a graphical way to manage your eBook collection, but also comes with a set of useful command-line tools. One of these is ebook-convert.