to save cluttering the bay thread more than required i'll try here.
open your pdf as normal
use its resize option so you get the whole pic you want displayed on screem
press ctrl + prt scrn
open ms paint
select edit / paste
select save as
give it a name and select jpeg from the dropdown options
hit save
now upload that as normal to tinypic.
of course you could always edit the pic to show only the pic but thats up to you.
open your pdf as normal
use its resize option so you get the whole pic you want displayed on screem
press ctrl + prt scrn
open ms paint
select edit / paste
select save as
give it a name and select jpeg from the dropdown options
hit save
now upload that as normal to tinypic.
of course you could always edit the pic to show only the pic but thats up to you.