Sigma RAW to WebP Converter

Convert Sigma RAW to WebP online, for free.

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By proceeding, you confirm you own the rights to the files you upload and agree to our Terms of Use.

Advanced settings (optional)

Resize Output Image

Choose how to set the output size: keep the original, enter a width or height and we'll keep the aspect ratio, enter both dimensions, or scale by a percentage. Use "Keep original" to leave its dimensions unchanged.

Lossless compression?

Lossless compression? Enable this option to compress the output WebP image without any quality loss

Enable this option to compress the output WebP image without any quality loss

Image Quality

Lower values yield better compression but lower image quality. Default (92) is a good balance between image quality and compression.

Compression Speed

Lower values compress the image faster at the expense of lower compression quality and bigger file size.

Auto Orient

Auto Orient Correctly orient the image using the gravity sensor data stored in EXIF

Correctly orient the image using the gravity sensor data stored in EXIF

Strip Metadata

Strip Metadata Strip the image of any profiles, EXIF, and comments to reduce size

Strip the image of any profiles, EXIF, and comments to reduce size

How to Convert Sigma RAW to WebP?

Click the “Choose Files” button to select your Sigma RAW files.
Click the “Convert to WebP” button to start the conversion.
When the status change to “Done” click the “Download WebP” button

Easy to Use

Simply upload your Sigma RAW files and click the convert button. You can also batch convert Sigma RAW to WebP format.

Best Quality

We use both open source and custom software to make sure our conversions are of the highest quality. In most cases, you can fine-tune conversion parameters using “Advanced Settings” (optional, look for the icon).

Free & Secure

Our Sigma RAW to WebP Converter is free and works on any web browser. We guarantee file security and privacy. Files are protected with 256-bit SSL encryption and automatically deleted after 8 hours.

What is a Sigma RAW (X3F) file?

Sigma RAW is the raw image format written by Sigma’s SD and dp cameras, saved with the .x3f extension. Its distinguishing feature is the Foveon X3 sensor behind it, which captures red, green, and blue at every pixel instead of interpolating colour from neighbouring photosites. The result is a raw file with remarkable per-pixel detail, though the trade-off is large file sizes and a narrower choice of compatible software.

How to open a Sigma RAW file?

Use Sigma’s own SIGMA Photo Pro. It is purpose-built for Foveon data and produces noticeably better colour and detail than generic raw converters.

Some third-party developers, including Adobe Lightroom, RawTherapee, and XnView MP, can open Sigma RAW files, but support depends on the camera model. Developing in SIGMA Photo Pro and exporting a 16-bit TIFF is the most reliable route into other editors. You can also convert the file with our X3F to JPG tool.

Developed by: Sigma Corporation

Initial Release: 2002

What is a WebP file?

WebP is an open-source file type that uses predictive compression to create images that are ideal for web pages and mobile applications. WebP images are as much as 30 percent smaller than JPEG (JPG) and Portable Network Graphics (PNG) files, with similar visual quality. WebP images load quickly on web pages and mobile applications.

How to open a WebP file?

The default program for opening WebP is Google Chrome (Chrome), which works across platforms. WebP files also open automatically on GIMP and Microsoft Paint. Besides Chrome, all other web browsers support the WebP format.

Alternative free viewers to try are Pixelmator and Photopea. Also, try Corel PaintShop Pro. Prior to using IrfanView, Windows Photo Viewer, and Adobe Photoshop, be sure to install the plugins for opening WebP.

Developed by: Google

Initial Release: September 2010

Useful links:

Google Developer article on WebP compression

Related WebP Tools:

Use our Color Picker to pick colors from WebP images

Convert other files to WebP format

Freeconvert.me can convert your other files to WebP format:

Convert Your Sigma RAW files to other formats

Freeconvert.me can convert your Sigma RAW files to these other formats:

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