Character set and Format file conversion

# dos2unix filedos.txt fileunix.txt

convert a text file format from MSDOS to UNIX [man]

# recode ..HTML < page.txt > page.html

convert a text file to html [man]

# recode -l | more

show all available formats conversion [man]

# unix2dos fileunix.txt filedos.txt

convert a text file format from UNIX to MSDOS [man]

And other command :

pdftoabw
pdftohtml
pdftoppm
pdftops
pdftotext

and more....