G3 to VIFF — Format Comparison & Online Converter
Fast, instant G3 (FAX) to VIFF conversion. No signup required. Just drop your .g3 file and get .viff in seconds.
Batch Settings
About G3 (FAX) to VIFF Conversion
G3 and VIFF are both image formats, but they differ in important ways. G3 is a widely used file format. VIFF is a widely used file format.
When you convert G3 to VIFF, the goal is to convert between formats quickly. Converting G3 to VIFF maintains high quality with CocoConvert's optimised encoder settings. Understanding these technical differences helps you choose the right format for your workflow.
Your G3 file is decoded and re-encoded as VIFF. The conversion involves 4 steps: (1) your g3 file is uploaded and validated, (2) the file is decoded (parsed into its raw data), (3) the data is re-encoded in viff format, (4) the converted file is ready for download.
CocoConvert's converter handles the entire pipeline server-side using FFmpeg, Sharp, and qpdf — battle-tested libraries used by streaming platforms and enterprise tools. Files are encrypted in transit and deleted within 24 hours.
This conversion is ideal when you When you need a VIFF file. For the opposite direction, CocoConvert also supports VIFF to G3 conversion.
How to Convert G3 (FAX) to VIFF
- 1
Upload .g3 file
Select your G3 file by dragging it to the upload zone or using the file picker. Batch upload is available for multiple files.
- 2
Choose .viff
Set VIFF as the output format. The converter uses optimal settings based on the G3→VIFF conversion profile.
- 3
Convert
The server-side engine decodes your G3 file and re-encodes it as VIFF. Processing time depends on file size and complexity.
- 4
Download result
Grab your converted .viff file. Multiple output files can be downloaded together.
What Happens When You Convert G3 (FAX) to VIFF
Your G3 file is decoded and re-encoded as VIFF.
Your G3 file is uploaded and validated
The file is decoded (parsed into its raw data)
The data is re-encoded in VIFF format
The converted file is ready for download
Format Comparison
G3 (FAX)
.g3 file
| Extension | .g3 |
| MIME Type | image/g3fax |
| Category | Image |
VIFF
.viff file
| Extension | .viff |
| MIME Type | image/x-viff |
| Category | Image |
Should You Convert G3 (FAX) to VIFF?
When to Convert
- ✓When you need a VIFF file
Frequently Asked Questions
What is the difference between G3 and VIFF?
G3 is a widely used file format. VIFF is a widely used file format.
Does G3 to VIFF conversion affect quality?
Converting G3 to VIFF maintains high quality with CocoConvert's optimised encoder settings.
Which format has better compression, G3 or VIFF?
G3 is a common image format. VIFF is widely supported. The better choice depends on whether you prioritize file size or quality.
How long does G3 to VIFF conversion take?
Most conversions finish in seconds. Larger files or complex image content may take 10–30 seconds. CocoConvert processes files in parallel for batch jobs.
Is G3 or VIFF better for long-term storage?
Both formats use lossy compression, so consider keeping your original source file for long-term storage.
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