X3F Converter

Convert X3F (Sigma RAW photo) files online, for free, with nothing to install.

X3F is a RAW photo format from Sigma: the data straight from the camera's sensor, before it is turned into a JPG. It keeps more detail to adjust, but needs a RAW converter to be opened. X3F files can be saved as AVIF, BMP, EPS, GIF, ICO, JPG, PDF, PNG, PS, PSD, TIFF, WEBP, on our server.

What is an X3F file?

X3F – Sigma RAW photo. X3F is a RAW photo format from Sigma: the data straight from the camera's sensor, before it is turned into a JPG. It keeps more detail to adjust, but needs a RAW converter to be opened.

How to convert an X3F file

  1. Click Select File, or drop your .x3f files anywhere on this page.
  2. Pick the format you want next to each file, for example JPG.
  3. Click Convert, then Download when it's done.

X3F at a glance

X3F
CompressionNone, lossless or lossy, by camera
TransparencyNo
AnimationNo
Created bySigma
Best forEditing photos with the most room to adjust

Frequently asked questions

What is an X3F file?

X3F is a RAW photo format from Sigma: the data straight from the camera's sensor, before it is turned into a JPG. It keeps more detail to adjust, but needs a RAW converter to be opened.

How do I open an X3F file?

X3F files open in photo editors such as Adobe Lightroom or Photoshop, in darktable and RawTherapee (both free), or in the maker's own software. To share the photo, convert it to JPG here.

Is converting X3F files free?

Yes. Everyone gets 25 free credits a day, with no account needed. Conversions on our server use one credit per started minute of work, so most cost a single credit. Credits reset at midnight UTC.

Are my X3F files uploaded anywhere?

This conversion runs on our server, because a browser can't develop camera RAW files. Your file is sent over an encrypted connection, and both it and the result are deleted 72 hours after the conversion.

Just want to look at it?

Convert X3F to

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