Supported Fax Attachments

March 15, 2021
Article : 007626

The article provides information for supported File Attachments for Faxes.

Rainbow Office Internet Fax makes faxing easy by allowing you to send a fax message and attach several file types without a fax machine or dedicated line. 

NOTE: The time required for transmitting fax messages depends on the quality and content of the fax that will be sent. For documents that contain mostly text, it usually takes approximately 1 minute per page for the document to be delivered. When sending documents that contain graphics (scanned pages of documents), or for faxes sent to a slow fax line, it may take 5 minutes per page or more to be delivered.

To prevent issues when sending your documents as fax attachments, make sure to check the following before sending your fax message: 

Ensure that the attached files are supported. For the list of supported file types, scroll down to the table below

Ensure that the file name of the attached files does not include ampersands (e.g. &) or other special characters such as @#$%^&*, etc...

Ensure that the attachment does not exceed 200 pages

Ensure that the combined size of all attachments does not exceed 20 MB

File Extension  Application Type Supported Versions
 Pdf  Adobe Acrobat / Adobe Reader All 
 Psd Adobe Photoshop  3.0 and higher 
 doc, docx, docm* Microsoft Word  Windows: 95, 97, 2000, 2003, 2007
Mac: 4, 5.x, 95, 98
 dot Microsoft Word Document Template All
mcw Microsoft Word for Mac  4- 5.1
 xls, xlsx, xlsb, xlsm*  Microsoft Excel  5, 95, 97, 2000, 2003, 2007
 ppt, pptx, pptm*  Microsoft PowerPoint  4 and higher
 vsd, vdx  Microsoft Visio  All
 pub  Microsoft Publisher  98, 2000, 2003
 wps  Microsoft Works  All
 wri  Microsoft Windows Write  All
 awd  Microsoft Fax  All
 tif, tiff, gif, jpg, jpeg, bmp,
png, pcx, tga
 Generic Graphic Formats  All
 rtf  Rich Text Format  All
 txt, log, h, cpp, c, err, hpp  Text Files  All
 wk1, wk3, wk4  Lotus 1-2-3  All
 wq1  Quattro Pro DOS  All
 xml  Extensible Markup Language  All
 html, htm  HyperText Markup Language  All
 csv  Comma Separated Values  All


IMPORTANT: Macro-enabled files that require a macro to execute for the file to open are not supported.

Rainbow Office recommends setting Adobe Acrobat Reader as the default PDF file manager/reader. Though there are some PDF Readers available on the internet, Rainbow Office strongly suggests using Adobe Acrobat Reader. Adobe Acrobat Reader is free software and can be downloaded from Adobe's website.

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