Opening file with no extension

I received a graphics file that was made in a Mac and it has no extension.

I have tried renaming the file as GIF, JPEG, TIFF but I still can’t open the file.

Is there any shareware or process that I can use to open this file on my PC?

Ask the guy with the Mac what format he used. You can try downloading Irfanview as a viewer, but you will still need to know (or guess) the file type.

If you have Office, you can launch Word or PPT and Insert | Picture | From File. Change the “Files of type” dropdown to “All Files”, and if it is any format that Office can handle, (you’ll see all the supported graphic types in that dropdown), it will insert it. You still won’t know what it was, but you’ll be able to see it if it’s any of those formats.

If it isn’t some arcane Mac-specific format, it may well be a postscript file; try renaming it .eps or .ps and see if you can open it then.

Failing that, open it as text into Notepad (it will probably actually insist on opening into Wordpad, but no matter); it may well contain some text at the start of the file describing the format (sounds silly, but this really is often the case).

Thanks for the help. The Irfanview application did the trick. It actually automatically detected the type and opened it up.