Convert X3F to AVIF Online — Free
Fast, free X3F to AVIF converter. No registration required.
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How to Convert
Upload your .x3f file by dragging it into the upload area or clicking to browse.
Choose your output settings. The default settings work great for most files.
Click Convert and download your .avif file when it's ready.
What is X3F?
X3F is Sigma's proprietary RAW format for cameras using the unique Foveon X3 sensor, which captures all three color layers at every pixel location unlike conventional Bayer sensors.
Format Details
- Full Name
- Sigma/Foveon RAW
- Extension
- .x3f
Key Features
- Foveon X3 sensor
- Full-color pixels
- Sigma cameras
- Unique color capture
What is AVIF?
AVIF is a modern image format based on the AV1 video codec. It offers the best compression available, outperforming both WebP and JPEG.
Format Details
- Full Name
- AV1 Image File Format
- Extension
- .avif
Key Features
- Best compression
- HDR support
- Transparency
- Modern browsers
X3F vs AVIF
| Feature | X3F | AVIF |
|---|---|---|
| Full Name | Sigma/Foveon RAW | AV1 Image File Format |
| Extension | .x3f | .avif |
| Best For | Foveon X3 sensor | Best compression |