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Which File-Types does Fax Support?

The following table lists file types supported as attachments

DOC, DOT, DOCX: Microsoft Word 97, 2000, XP, 2003, 2007
XML: Currently, only Microsoft Word 2003 XML files are supported.
PDF: Adobe Acrobat
TIF: Group 3 TIFF, may be in standard or fine resolution ***
TXT: ASCII Plain Text
XLS, XLSX: Microsoft Excel 97, 2000, XP, 2003, 2007
Note: Only active worksheets will be faxed
HTM/HTML: ** HTML files
MHT: ** MHT web archive files; HTML with embedded images
URL: Windows URL files
Note: The contents of the linked page will be faxed
PPT, PPTX: Microsoft PowerPoint 97, 2000, XP, 2003, 2007
GIF: Non-animated GIF files *
JPG: JPEG files *
PS: PostScript
EPS: Encapsulated PostScript
RTF: Rich Text Format
BMP: Windows Bitmap *
PCX: PC Paintbrush Bitmap *
SNP: Microsoft Access Snapshot (Version 10 on Windows 2000)

* For best results use only monochrome (1-bit colour, not grayscale) with the following image sizes

** HTML documents are rendered using MS Internet Explorer, with page margins set to 10.16mm (left, right, top, and bottom)

***Image Sizes

Standard Resolution:
A4: 1,728 x 1,169
Letter: 1,728 x 1,100
Legal: 1,728 x 1,400
B4: 2,048 x 1,357

Fine Resolution
A4: 1,728 x 2,338
Letter: 1,728 x 2,200
Legal: 1,728 x 2,800
B4: 2,048 x 2,714


  • Maximum number of pages per fax: 100 pages (or more by special request).
  • Maximum total file size of fax attachments: 20MB
  • Maximum total file size of fax attachments, where the email is electronically signed: 10MB
  • No support for password-protected files.
  • No support for read-only files (which bring up a pop-up when opened)