How to Convert QOI to G3 — Quick & Free
Fast, instant QOI to G3 (FAX) conversion. No signup required. Just drop your .qoi file and get .g3 in seconds.
Batch Settings
About QOI to G3 (FAX) Conversion
Short answer: yes, you can convert QOI to G3 online for free, and quality is well preserved with the right settings. Just upload your .qoi file to CocoConvert, pick G3 as the output, and click Convert. The whole process takes seconds.
Now for the details. QOI is a widely used file format. G3 is a widely used file format. Converting between these two formats lets you convert between formats quickly.
Your QOI file is decoded and re-encoded as G3. Converting QOI to G3 maintains high quality with CocoConvert's optimised encoder settings.
CocoConvert runs entirely online — no software to install, no account to create. Your files are encrypted during upload (TLS), processed on isolated servers in Germany, and permanently deleted after 24 hours. It works in Chrome, Safari, Firefox, Edge, and all mobile browsers.
Need to convert more than one file? Free users can do 5 per hour. Pro gets 100 per hour with files up to 5 GB each.
How to Convert QOI to G3 (FAX)
- 1
1. Upload QOI
Drop your .qoi file onto the page (or tap "Browse" on mobile). Add multiple files for batch conversion.
- 2
2. Select G3
Choose .g3 from the output dropdown. Settings are pre-configured for best results.
- 3
3. Convert
One click. The server handles all the heavy lifting using FFmpeg and Sharp.
- 4
4. Download
Your .g3 file is ready. Download it directly or get all files as a zip archive.
What Happens When You Convert QOI to G3 (FAX)
Your QOI file is decoded and re-encoded as G3.
Your QOI file is uploaded and validated
The file is decoded (parsed into its raw data)
The data is re-encoded in G3 format
The converted file is ready for download
Format Comparison
QOI
.qoi file
| Extension | .qoi |
| MIME Type | image/qoi |
| Category | Image |
G3 (FAX)
.g3 file
| Extension | .g3 |
| MIME Type | image/g3fax |
| Category | Image |
Should You Convert QOI to G3 (FAX)?
When to Convert
- ✓When you need a G3 file
Frequently Asked Questions
Is QOI to G3 conversion free?
Yes. CocoConvert offers free QOI to G3 conversion with generous daily limits — 25 minutes of processing time and up to 5 files per hour (250 MB each). Pro plans remove these limits.
How fast is QOI to G3 conversion?
Most files convert in 2–10 seconds depending on size. Large image files may take 30 seconds. Batch jobs process in parallel for maximum speed.
What happens to my files after conversion?
Your uploaded QOI file and the converted G3 file are both automatically deleted from our servers within 24 hours. They are never shared, sold, or analysed.
Does converting QOI to G3 lose quality?
Converting QOI to G3 maintains high quality with CocoConvert's optimised encoder settings.
Can I convert G3 back to QOI?
Yes, CocoConvert supports G3 to QOI conversion as well. However, if the original conversion involved lossy compression, converting back won't recover the lost data.
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