G3 to APNG — Format Comparison & Online Converter
Fast, instant G3 (FAX) to APNG conversion. No signup required. Just drop your .g3 file and get .apng in seconds.
Batch Settings
About G3 (FAX) to APNG Conversion
G3 and APNG are both image formats, but they differ in important ways. G3 is a widely used file format. APNG is a widely used file format.
When you convert G3 to APNG, the goal is to convert between formats quickly. Converting G3 to APNG 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 APNG. 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 apng 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 APNG file. For the opposite direction, CocoConvert also supports APNG to G3 conversion.
How to Convert G3 (FAX) to APNG
- 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 .apng
Set APNG as the output format. The converter uses optimal settings based on the G3→APNG conversion profile.
- 3
Convert
The server-side engine decodes your G3 file and re-encodes it as APNG. Processing time depends on file size and complexity.
- 4
Download result
Grab your converted .apng file. Multiple output files can be downloaded together.
What Happens When You Convert G3 (FAX) to APNG
Your G3 file is decoded and re-encoded as APNG.
Your G3 file is uploaded and validated
The file is decoded (parsed into its raw data)
The data is re-encoded in APNG format
The converted file is ready for download
Format Comparison
G3 (FAX)
.g3 file
| Extension | .g3 |
| MIME Type | image/g3fax |
| Category | Image |
APNG
.apng file
| Extension | .apng |
| MIME Type | image/apng |
| Category | Image |
Should You Convert G3 (FAX) to APNG?
When to Convert
- ✓When you need a APNG file
Frequently Asked Questions
What is the difference between G3 and APNG?
G3 is a widely used file format. APNG is a widely used file format.
Does G3 to APNG conversion affect quality?
Converting G3 to APNG maintains high quality with CocoConvert's optimised encoder settings.
Which format has better compression, G3 or APNG?
G3 is a common image format. APNG is widely supported. The better choice depends on whether you prioritize file size or quality.
How long does G3 to APNG 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 APNG 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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