How Can We Help?
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Getting Started
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Sending Faxes
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Receiving Faxes
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Email-to-Fax
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Fax-to-Email
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Fax Numbers
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Team & Shared Inbox
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Security & Compliance
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Billing & Subscriptions
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Account Management
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Storage & Document Management
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Delivery Status & Reports
VoltFax supports many common document formats for fax transmission.
Commonly supported file types include:
- PDF (.pdf)
- Microsoft Word (.doc, .docx)
- Microsoft Excel (.xls, .xlsx)
- Microsoft PowerPoint (.ppt, .pptx)
- Plain Text (.txt)
- Rich Text Format (.rtf)
- JPEG (.jpg, .jpeg)
- PNG (.png)
- TIFF (.tif, .tiff)
Recommendations
For the best fax quality, we recommend:
- PDF documents whenever possible
- High-resolution scans
- Black-and-white documents for improved readability
Password-protected or encrypted files must be unlocked before uploading.
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