Convert Sigma/Foveon RAW (.x3f) to WebP Image (.webp) online for free. Fast, secure image conversion with no watermarks or registration.
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 .webp file when it's ready.
WebP is Google's modern web image format offering 25-34% better compression than JPEG at equivalent visual quality. Converting Sigma X3F files to WebP produces efficient web images from the Foveon sensor's unique output. The Foveon's per-pixel sharpness and clean color boundaries compress particularly efficiently in WebP because there are no Bayer interpolation artifacts wasting compression bits.
For Foveon photographers sharing their work online — where the Foveon's exceptional detail resolution is often the story itself — WebP provides the most bandwidth-efficient way to deliver this quality to web audiences without requiring specialized X3F software.
WebP produces significantly smaller files than JPEG while maintaining equivalent or better visual quality. For Foveon photography on the web — portfolios, galleries, blogs showcasing the sensor's unique capabilities — WebP means faster loading and lower bandwidth without sacrificing the detail that makes Foveon images special.
With 97%+ browser support, WebP is the standard for modern web delivery. Converting X3F to WebP bypasses the format's extreme compatibility limitations while delivering Foveon quality in the most efficient web format available.
The conversion decodes the X3F Foveon layer data through color separation, then encodes with WebP's VP8 (lossy) or VP8L (lossless) codec. Foveon's clean per-pixel data compresses more efficiently than Bayer-interpolated data. Quality 82-88 from a 15.3 MP SD1 Merrill produces WebP files of approximately 1.2-2.5 MB — notably smaller than equivalent JPEG because the clean pixel boundaries compress better. ICC profiles and EXIF metadata can be embedded.
WebP at quality 85-90 preserves the Foveon's defining characteristics for web viewing: the per-pixel sharpness, the clean color transitions, and the three-dimensional rendering. Because Foveon pixels have genuine sharp boundaries rather than interpolation blur, WebP compression is more efficient — more real detail is preserved per byte than with Bayer-origin images.
| Device | X3F | WebP |
|---|---|---|
| Windows PC | Partial | Partial |
| macOS | Partial | Partial |
| iPhone/iPad | Partial | Partial |
| Android | Partial | Native |
| Linux | Partial | Partial |
| Web Browser | No |
X3F to WebP is the optimal web publishing format for Foveon photography. The sensor's clean per-pixel data compresses efficiently in WebP, delivering the Foveon's unique quality to web audiences at the fastest possible loading speeds.
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| Native |
ทุกเบราว์เซอร์ ทุกอุปกรณ์
| ฟีเจอร์ | X3F | WebP |
|---|---|---|
| ชื่อเต็ม | Sigma RAW (Foveon) | WebP Image |
| นามสกุล | .x3f | .webp |
| เหมาะที่สุดสำหรับ | Sigma cameras | Superior compression |