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I have an old Panasonic fax connected to an old 'fax server'. The fax system produces .tiff files that I just can't open using many viewer; they would simply show a page filled with horizontal lines. I've tried IrfanView and XnView, both failed.

Panasonic provided a tiff viewer that can open the .tiff file, but it's not compatible with Windows 7.

I've uploaded a sample file here:

Can anyone recommend me a viewer that can open that file?

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GIMP should be able to open those. gs is also available for Windows as gswin32.

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