How do I convert MOS to PNG?

Upload your MOS file above. It is converted to PNG automatically (change the output format or quality in the Settings tab if you need to), then click Download. There is nothing to install.

Does converting MOS to PNG lose quality?

No. Both formats are lossless, so every pixel is kept exactly.

MOS or PNG: which should I use?

Use MOS for adjusting exposure and white balance with maximum latitude. Use PNG for screenshots, logos, text graphics and cut-outs. Keep in mind the main drawback of PNG: large files for photographs.

MOS is the RAW format of Leaf medium-format digital backs. It stores the unprocessed sensor data for maximum editing latitude, so most apps can’t show it as a normal picture.

Can I convert MOS to PNG without Photoshop or Lightroom?

Yes. The MOS file is opened on our servers, so you don’t need Photoshop or Lightroom or any other software installed. Upload the file, then download the finished PNG.

Is the MOS to PNG converter free?

Yes. Convert, preview and download a single result without creating an account. Premium adds batch conversion (many files into one ZIP) and larger uploads.

Convert MOS to PNG — Free Online MOS Converter

Convert MOS to PNG online at full resolution. Open camera RAW files without Photoshop or Lightroom; preview one free or batch-convert with Premium.

Drop your MOS file or click to browse

Why convert MOS to PNG?

PNG is supported far more widely than MOS, so the file is easier to open, share and upload.
PNG is made for screenshots, logos, text graphics and cut-outs.
No Photoshop or Lightroom needed: the file is opened on our servers and you download a ready-to-use PNG.

What to expect when converting MOS to PNG

The RAW file is developed at full resolution with your camera’s white balance. Keep the original MOS to re-edit exposure later.
Your original MOS file isn’t changed: you download a new PNG copy.

MOS vs PNG

Feature	MOS	PNG
Full name	Leaf camera RAW	Portable Network Graphics
Origin	Written by Leaf cameras	Published as a W3C standard in 1996
Compression	Unprocessed sensor data	Lossless
Transparency	No	Yes — smooth, partial transparency
Animation	No	No
Colour	12 to 16 bits per channel from the sensor	Up to 16 bits per channel
Where it opens	RAW editors such as Lightroom; not browsers or most apps	All browsers, phones, computers and image editors
Best for	adjusting exposure and white balance with maximum latitude	screenshots, logos, text graphics and cut-outs
Main drawback	very large files that most apps can’t open	large files for photographs

In short: choose MOS for adjusting exposure and white balance with maximum latitude; choose PNG for screenshots, logos, text graphics and cut-outs.

MOS to PNG: lossless files from Leaf backs for retouching and design

When a Leaf MOS file is going somewhere other than a RAW editor, such as a retoucher's desk, a page layout or a composite, a PNG keeps the developed image without the artifacts a JPG adds. That matters for the kind of work Leaf backs were bought for: fashion, beauty and product images whose fine textures, smooth gradients and clean edges show compression quickly.

Plan around two facts. The PNG is saved at 8 bits per color channel, while the back captured up to 16, so dramatic exposure or color changes are still better made from the MOS in a RAW editor. And a full-resolution PNG from a 22- to 80-megapixel back is a very large file; if your retoucher prefers TIFF, set the output to TIFF in Settings before converting.

For product shots, remove the studio backdrop to get a cut-out with transparency, or swap in a new background. For quick approvals, MOS to JPG gives smaller files that open on any phone.

Frequently asked questions

How do I convert MOS to PNG?: Upload your MOS file above. It is converted to PNG automatically (change the output format or quality in the Settings tab if you need to), then click Download. There is nothing to install.
Does converting MOS to PNG lose quality?: No. Both formats are lossless, so every pixel is kept exactly.
MOS or PNG: which should I use?: Use MOS for adjusting exposure and white balance with maximum latitude. Use PNG for screenshots, logos, text graphics and cut-outs. Keep in mind the main drawback of PNG: large files for photographs.
What is a MOS file?: MOS is the RAW format of Leaf medium-format digital backs. It stores the unprocessed sensor data for maximum editing latitude, so most apps can’t show it as a normal picture.
Can I convert MOS to PNG without Photoshop or Lightroom?: Yes. The MOS file is opened on our servers, so you don’t need Photoshop or Lightroom or any other software installed. Upload the file, then download the finished PNG.
Is the MOS to PNG converter free?: Yes. Convert, preview and download a single result without creating an account. Premium adds batch conversion (many files into one ZIP) and larger uploads.

What you can do with MOS to PNG

Review the main capabilities before you begin.

Convert Leaf MOS raw files to lossless PNG
Keep every detail from the original capture
Get standard PNGs you can view anywhere
Batch-convert many MOS files in one go
Open studio raw shots in any editor

Use this tool

Settings reference

Available controls for MOS to PNG.

Settings

Output formatDropdown: Chooses the file type you download. The page opens on its own output format; switch to any other format before converting.Options: JPGPNGWebPAVIFGIFTIFFBMPICOPDF
QualitySliderRange: 20–100 · Default: 90: For JPG, WebP, AVIF and image-to-PDF output: higher keeps more detail but makes a bigger file; 60–80 suits most photos. Documents (Publisher, XPS, EPS…) become PDFs with every page and sharp text, with no quality setting.
Lossless modeOn / Off: For WebP and AVIF output: keeps every pixel exactly (best for logos, graphics and transparency) at the cost of a larger file.
Background fillColor picker: For JPG, BMP and image-to-PDF output, which can’t store transparency: the colour that fills transparent areas (white by default).