Sigma RAW to PNG Converter

Convert Sigma RAW to PNG online, for free.



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Keep original size
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.
Lossy Compression
Choose how much to compress the PNG. "Lossy" gives the smallest files at the cost of image quality; "Auto" picks a level for you.
Lower values give better compression (at the cost of image quality)
Makes the color you pick transparent in the PNG output. Use the color picker or enter a hex value (e.g. #FFFFFF).
Correctly orient the image using the gravity sensor data stored in EXIF
Strip the image of any profiles, EXIF, and comments to reduce size

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How to Convert Sigma RAW to PNG?

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

Easy to Use

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


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


Portable Network Graphics (PNG) is a raster-based file type that compresses images for portability. PNG images can have RGB or RGBA colors and support transparency, which makes them perfect for use in icons, or graphic designs. PNG also supports animations with better transparency (try our GIF to APNG). The benefits of using PNG are Plus, PNG is an open format that uses lossless compression. 

How to open a PNG file?

Generally, PNG files will open in your operating system’s default image viewer. PNG files are also easily viewable on all web browsers. If you are having trouble opening PNG files, use our PNG to JPG, PNG to WebP, or PNG to BMP converters.


Alternative programs such as GIMP or Adobe Photoshop are useful for opening and editing PNG files. PNG files are a bit larger than other file types, so exercise caution when adding them to a web page. One interesting feature of PNG files is the ability to create transparency in the image, particularly a transparent background. 


Developed by: PNG Development Group

Initial Release: 1 October 1996

Useful links: 

LifeWire article on PNGs

Wiki article on PNGs

Related PNG Tools: 

Use our Color Picker to pick colors from images

Freeconvert.me can convert your files to these related formats:


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