FAX vs RAS — Comparison & Free Converter
Fast, instant FAX to RAS conversion. No signup required. Just drop your .fax file and get .ras in seconds.
Batch Settings
About FAX to RAS Conversion
FAX or RAS — which format should you use? The answer depends on your needs. Here's a quick breakdown.
FAX is a widely used file format. It has common platform support. RAS is a widely used file format. It has common platform support.
So when should you convert FAX to RAS? This conversion is ideal when you When you need a RAS file. This conversion helps you convert between formats quickly.
Converting FAX to RAS maintains high quality with CocoConvert's optimised encoder settings.
If you've decided RAS is the right choice, CocoConvert makes the conversion effortless. Upload your .fax file, pick RAS, and click Convert — done in seconds. The converter runs on secure servers in Germany, powered by FFmpeg, Sharp, and qpdf. Files are encrypted via TLS and erased within 24 hours.
Free tier: 5 files/hour, 250 MB each. Pro: 100 files/hour, 5 GB each. Works in every modern browser on desktop and mobile.
How to Convert FAX to RAS
- 1
Choose your FAX file
Upload your .fax file using drag-and-drop or the file browser. Batch mode lets you add multiple files.
- 2
Set format to RAS
Select .ras from the output options. The converter applies optimal quality settings automatically.
- 3
Run the conversion
Click Convert. Server-side processing means your device stays fast — even for large image files.
- 4
Get your RAS file
Download your converted file instantly. Batch downloads are available as a zip archive.
What Happens When You Convert FAX to RAS
Your FAX file is decoded and re-encoded as RAS.
Your FAX file is uploaded and validated
The file is decoded (parsed into its raw data)
The data is re-encoded in RAS format
The converted file is ready for download
Format Comparison
FAX
.fax file
| Extension | .fax |
| MIME Type | image/g3fax |
| Category | Image |
RAS
.ras file
| Extension | .ras |
| MIME Type | image/x-sun-raster |
| Category | Image |
Should You Convert FAX to RAS?
When to Convert
- ✓When you need a RAS file
Frequently Asked Questions
Should I use FAX or RAS?
It depends on your goal. FAX preserves full quality. RAS preserves full quality. Choose based on whether file size or quality matters more for your use case.
Is RAS higher quality than FAX?
Not necessarily. Converting FAX to RAS maintains high quality with CocoConvert's optimised encoder settings. Quality depends on the compression type and settings, not just the format name.
Can I convert FAX to RAS on Mac and Windows?
Yes. CocoConvert is a web-based tool that works in all modern browsers — Chrome, Safari, Firefox, Edge — on any operating system including macOS, Windows, Linux, iOS, and Android.
Is CocoConvert free for FAX to RAS?
Yes. Free users get 5 conversions per hour (250 MB each). Pro subscribers unlock 100 files per hour, 5 GB per file, and priority processing.
What tools does CocoConvert use for FAX to RAS?
CocoConvert uses FFmpeg for audio/video, Sharp for images, and qpdf for documents — the same open-source libraries used by Netflix, YouTube, and major enterprise platforms.
Versions are pinned in our worker Dockerfile and re-built via CI on every change.