Identifying EPS Files
Because of the different ways in which EPS previews are handled, there is no one way to identify an EPS file.
- A Windows-format EPS file containing a TIFF or WMF preview must start with the four bytes containing, in hexadecimal, C5 D0 D3 C6. These files are widespread on all platforms.
- In all other cases an EPS file must start with a line
%!PS-Adobe-a.b EPSF-c.dwhere a, b, c and d are all single digit numbers.- A Mac-format EPS file is accompanied by a resource fork. The preview is a PICT resource with ID 256. An EPS file on the Mac is expected to have a file type code of "EPSF", whether or not it has a preview.
- An EPSI file will contain a line starting
%%BeginPreview:in the DSC prolog. - In many cases no preview is present at all.
Read more about this topic: Encapsulated PostScript
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