Re: How can I change by EMF byte array to jpeg file?
Without going into the nightmare that is Word Automation and its funky object model too much...
Here is a simple demo that will Automate a reasonably recent version of Word (2000 or newer?) and extract the "page 1" EMF and save it as a disk file in JPEG format after rendering it on top of a white backdrop.
You need Word installed, but there is no other external dependency aside from GDI+ which should already be installed as part of Windows unless you are still running Win9x or something. Sample document included.
I chose to ignore margins, which is another factor that results in a somewhat distorted result.
As far as I could tell from trying a few things there can be many complications such as Sections, Headers and Footers, and probably even more if the document contains tables. Ack, ptui! Word is quite a minefield.