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Why convert PEF to G4?
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 PEF format
RAW — Pentax PEF RAW
PEF is Pentax's proprietary RAW format used in Pentax DSLR and medium-format cameras. It captures full sensor data for flexible post-processing and is the native format for Pentax's unique weather-sealed camera bodies.
Common uses
- Pentax DSLR and medium-format photography
- Outdoor and weather-sealed camera workflows
- Landscape and nature photography
- Professional studio post-production
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
Related conversions
Other conversions available for PEF and G4 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.