[XeTeX] efficiency of placing different graphics formats?

[Jonathan Kew]

On 23 Sep 2008, at 6:51 PM, William Adams wrote:

> I'm placing PNG files in a project and it seems much slower than
> placing equivalent JPG files --- has anyone timed this?

I can believe that it would tend to be slower, because PDF supports  
the embedding of JPEG data as-is, whereas PNG would have to be  
interpreted and converted by the driver as it generates the PDF file.

JK