FAX to AVIF — Format Comparison & Online Converter
Fast, instant FAX to AVIF conversion. No signup required. Just drop your .fax file and get .avif in seconds.
Batch Settings
About FAX to AVIF Conversion
FAX and AVIF (introduced 2019) are both image formats, but they differ in important ways. FAX is a widely used file format. AVIF is the newest image format based on AV1 video codec, delivering exceptional compression — up to 50% smaller than JPEG at the same quality.
When you convert FAX to AVIF, the goal is to convert between formats quickly. Converting FAX to AVIF maintains high quality with CocoConvert's optimised encoder settings. Understanding these technical differences helps you choose the right format for your workflow.
Your FAX file is decoded and re-encoded as AVIF. The conversion involves 4 steps: (1) your fax file is uploaded and validated, (2) the file is decoded (parsed into its raw data), (3) the data is re-encoded in avif 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 AVIF file. For the opposite direction, CocoConvert also supports AVIF to FAX conversion.
How to Convert FAX to AVIF
- 1
Upload .fax file
Select your FAX file by dragging it to the upload zone or using the file picker. Batch upload is available for multiple files.
- 2
Choose .avif
Set AVIF as the output format. The converter uses optimal settings based on the FAX→AVIF conversion profile.
- 3
Convert
The server-side engine decodes your FAX file and re-encodes it as AVIF. Processing time depends on file size and complexity.
- 4
Download result
Grab your converted .avif file. Multiple output files can be downloaded together.
What Happens When You Convert FAX to AVIF
Your FAX file is decoded and re-encoded as AVIF.
Your FAX file is uploaded and validated
The file is decoded (parsed into its raw data)
The data is re-encoded in AVIF format
The converted file is ready for download
Format Comparison
FAX
.fax file
| Extension | .fax |
| MIME Type | image/g3fax |
| Category | Image |
AVIF
.avif file
| Extension | .avif |
| MIME Type | image/avif |
| Category | Image |
Should You Convert FAX to AVIF?
When to Convert
- ✓When you need a AVIF file
Frequently Asked Questions
What is the difference between FAX and AVIF?
FAX is a widely used file format. AVIF is the newest image format based on AV1 video codec, delivering exceptional compression — up to 50% smaller than JPEG at the same quality.
Does FAX to AVIF conversion affect quality?
Converting FAX to AVIF maintains high quality with CocoConvert's optimised encoder settings.
Which format has better compression, FAX or AVIF?
FAX is a common image format. AVIF uses both compression. The better choice depends on whether you prioritize file size or quality.
How long does FAX to AVIF 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 FAX or AVIF 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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