CR3 to FAX — Format Comparison & Online Converter
Fast, instant CR3 (CANON) to FAX conversion. No signup required. Just drop your .cr3 file and get .fax in seconds.
Batch Settings
About CR3 (CANON) to FAX Conversion
CR3 (introduced 2018) and FAX are both image formats, but they differ in important ways. CR3 is Canon's newer RAW format using HEIF containers for better compression and metadata. FAX is a widely used file format.
When you convert CR3 to FAX, the goal is to convert between formats quickly. Converting CR3 to FAX maintains high quality with CocoConvert's optimised encoder settings. Understanding these technical differences helps you choose the right format for your workflow.
Your CR3 file is decoded and re-encoded as FAX. The conversion involves 4 steps: (1) your cr3 file is uploaded and validated, (2) the file is decoded (parsed into its raw data), (3) the data is re-encoded in fax 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 FAX file. For the opposite direction, CocoConvert also supports FAX to CR3 conversion.
How to Convert CR3 (CANON) to FAX
- 1
Upload .cr3 file
Select your CR3 file by dragging it to the upload zone or using the file picker. Batch upload is available for multiple files.
- 2
Choose .fax
Set FAX as the output format. The converter uses optimal settings based on the CR3→FAX conversion profile.
- 3
Convert
The server-side engine decodes your CR3 file and re-encodes it as FAX. Processing time depends on file size and complexity.
- 4
Download result
Grab your converted .fax file. Multiple output files can be downloaded together.
What Happens When You Convert CR3 (CANON) to FAX
Your CR3 file is decoded and re-encoded as FAX.
Your CR3 file is uploaded and validated
The file is decoded (parsed into its raw data)
The data is re-encoded in FAX format
The converted file is ready for download
Format Comparison
CR3 (Canon)
.cr3 file
| Extension | .cr3 |
| MIME Type | image/x-canon-cr3 |
| Category | Image |
FAX
.fax file
| Extension | .fax |
| MIME Type | image/g3fax |
| Category | Image |
Should You Convert CR3 (CANON) to FAX?
When to Convert
- ✓When you need a FAX file
Frequently Asked Questions
What is the difference between CR3 and FAX?
CR3 is Canon's newer RAW format using HEIF containers for better compression and metadata. FAX is a widely used file format.
Does CR3 to FAX conversion affect quality?
Converting CR3 to FAX maintains high quality with CocoConvert's optimised encoder settings.
Which format has better compression, CR3 or FAX?
CR3 uses lossless compression. FAX is widely supported. The better choice depends on whether you prioritize file size or quality.
How long does CR3 to FAX 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 CR3 or FAX better for long-term storage?
CR3 is better for archival since it's lossless.
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