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Why convert G4 to FAX?
Fast
Your file is converted in under 30 seconds in our cloud.
Secure
Files are automatically deleted after 1 hour.
Quality preserved
Maximum quality preserved during conversion.
About the G4 format
G4 — CCITT Group 4 FAX
G4 is the more advanced monochrome fax compression format defined by ITU-T for Group 4 fax machines and TIFF storage. Using Modified Modified READ (MMR) compression, it achieves significantly better compression than G3 and is the standard for TIFF-based document archiving.
Common uses
- High-compression document fax archiving
- TIFF G4 document scanning for records management
- Legal and government document storage
- Converting G4 fax archives to PDF
About the FAX format
FAX — Group 3/4 Fax Image
FAX is a generic extension used for raw CCITT Group 3 or Group 4 fax image data files. These files contain compressed monochrome page scans as transmitted by fax machines, and are typically converted to TIFF or PDF for archival and viewing.
Common uses
- Fax document archiving and recovery
- Converting raw fax streams to viewable formats
- Legal and business fax record keeping
- Processing fax server received files
Related conversions
Other conversions available for G4 and FAX files
Frequently asked questions
Is the conversion free?
Yes, basic conversion is completely free. For large volumes, check out our paid plans.
What is the maximum file size?
Free accounts can convert files up to 25 MB. Pro accounts up to 100 MB.
How long are my files kept?
Files are automatically deleted after 1 hour on the free plan, 24 hours on Pro.
What formats are supported?
We support over 200 source and target formats. See our complete formats page.