Is it a new raw file format? No
Rawsie is not another proprietary raw format. Compressed images are converted into DNG, the format trusted by Leica, Sony, Apple, Pentax, Ricoh and other leading brands.
Can I use compressed images in Lr, C1, etc? Sure
Rawsie-compressed images don't require decompression and are compatible with main photo editing software, i.e. Adobe Lightroom, Adobe Photoshop, Capture One, DxO Mark, Photo Mechanic etc.
For Photo Mechanic, please make sure to switch on full-size preview generation in Settings.
Will my image resolution get decreased? No
We don't downgrade your image resolution and bit count. We care for quality, that's the reason why we've launched this product.
Will my images stay mine? 100%
Rawsie doesn't upload images anywhere online and doesn't have access to your information apart from camera model, which allows us to effectively control compression quality. The app works offline. Compressed images are exported into the folders where you want to have them on your desktop, disks, clouds and even if you'd stop using Rawsie they will be there and be yours forever.
Will I be able to print optimized images? Of course
Just as your usual raws, you can convert Rawsie-compressed images into any print format. Image resolution after compression stays exactly the same as in your original file.
Windows edition? Enroll on the waiting list
We are already working on it. If you'd love to be notified, please leave your email on the waiting list
I'm press! Welcome
Dear journalists, bloggers, photographers, educators! Before writing a review/blog, recording a podcast, etc, we strongly recommend you to check out our Technology page. Also please do reach out to us at if you'd love to learn more about the product and technology behind it, we are always here for you.
What system requirements are more important for faster Rawsie experience? (Thank you, Andrew!)
It's CPU. The more CPU cores, the faster Rawsie will work. As to Macbook Pro, please note that getting the higher frequency CPUs is not always faster. But getting more cores often is. We wouldn't recommend upgrading the frequency of the CPU, because as soon as the CPU heats up, it throttles the frequency down anyway.
Camera/settings limitations
Why some files get copied without optimization?
As quality is our top priority, Rawsie provides only optimization tested for a number of settings for certain tested cameras. That's why it features a number of technological limitations. After compression, a file subject to such a limitation will get copied to the export folder completely intact, so you couldn't accidentally delete them along with the source folder.

To see the exact reason behind certain files being copied without compression, please click See Report next to Files copied counter after compression ends.
General limitations: extreme ISO, lossy files
  • Not compressing files, already compressed in Rawsie
  • Not supporting ISO bigger than 65000
  • Not supporting DNG with lossy compression applied before, for example if "Use lossy compression" setting in Adobe DNG Converter was switched on (Linear Raw)
Camera brand limitations
  • Fuji. Not supporting files with "Dynamic Range" setting switched to other than 100%
  • Canon. Not supporting files with sRAW / MRAW setting switched on (lossy compression).
  • Nikon. Not supporting lossy-compressed settings, i.e."Lossy Compression", "Small" RAW size
    Camera model ISO limitations
    Not supporting files with ISO higher or equal to the values listed below:
    • Canon EOS 5D Mark III. <25600
    • Canon EOS 5D Mark IV. <32000
    • Canon EOS 5DS. <6400
    • Canon EOS 5DS R. <6400
    • Fuji GFX 50R. <12800
    • Fuji GFX 50S. <12800
    • Leica M10. <6400
    • Nikon D700. <6400
    • Nikon Z7. <51200
    Camera support
    Camera support list
    Please see actual Camera support list on our homepage
    Will there be more cameras supported?
    Sure! You will learn about new cameras next time your copy of Rawsie will be automatically updated. To get the latest news, please follow us on and You can also subscribe to our newsletter at
    Do I have any impact on when my camera will be supported?
    We are super open for your feedback. Please help us make Rawsie available for your camera ASAP by upvoting it on the list here.
    Will Rawsie compress my DNGs?
    Yep, if lossy compression wasn't applied before in-camera or on your computer in some different software.
    Why Rawsie says that some images imported are not supported?
    There are basically two options:
    1. You are trying to compress images that can't be compressed due to our limitations or from an unsupported cameras (see Limitations section above).
    2. If the number of imported images and compressed images are the same, but DPR still says some of them were not supported, there might have been a hidden macOS system file among the files you've imported that we can't define since they are protected by your system.
    Why no Fuji X series support? (Thank you, Owen!)
    Unfortunately, Fuji X rely on a very special sensor that Rawsie cannot currently work with. We are still aiming to introduce it at some point, but this will require more scientific research. Please follow our newsletter or Instagram for news and updates.
    What will happen to my source files after optimization?
    Rawsie follows a non-destructive pattern, meaning it will not overwrite your source files, they will remain intact. After compression a new copy of each file is created which will be up to 5 times lighter preserving full quality.
    Where will my optimized images be stored?
    It's for you to decide: choose or create a folder from 'Save to' bottom menu or chose one of the previously used folders by clicking 'More'. There's also an option to export images into their original folders, in which case a new "_Optimized" subfolder will be created in your source folder.
    How to export optimized images to their original folders?
    Rawsie allows exporting to original subfolders. Click "More" next to Export button and check "Export to original folders". The files will go to their original folder in a "_Optimized" subfolder.
    What's your compression ratio?
    1:3–1:8 depending on the information stored in your image.
    Does Rawsie retain the metadata of the original file? (Thank you, Richard!)
    The only metadata tag that we've found not getting transferred to the output files so far is the Noise Profile. All the other information is carried through, but we would strongly encourage you to double-check all the tags crucial to you.
    .p extensions (legacy before v0.9.56)
    .P extension was originally introduced to make sure you would never mix up optimized images and your original files. Current versions of Rawsie will not add .p extension anymore, please update your copy.

    For bunch renaming files please use and also a number of alternatives here
    Installation, updates
    Why does Rawsie require Adobe DNG Converter installed?
    In order to provide the best possible compression some of the files will require a free copy of Adobe DNG Converter on your system to encode your images to the open format DNG. If you uninstall Adobe DNG Converter, Rawsie will not work until you install it back.
    How do I uninstall Rawsie?
    Simply delete file on your system. If you don't remember where it is, you can open Spotlight and enter in the search field to locate and delete the file. If you'd also like to uninstall Adobe DNG Converter which goes with Rawsie, you can also delete it from Applications folder.
    How do I update my copy of Rawsie?
    Updates come automatically, so there's no need to manually update your Rawsie. You will see an update notification as soon as it will get updated. Alternatively, select Rawsie from the macOS top navigation bar and click Check for Updates
    Is there a trial version of Rawsie?
    Sure, it will allow you optimize 30 images a day to give it a try. See our homepage.
    Lifetime license and yearly subscription
    What is my license number?
    It's a number you use to activate your copy of Rawsie. You can find it in the e-mail that we've sent you when you purchased the license, upon logging in to or in the app's Check license window.
    How can I renew or cancel my subscription?
    Subscription will renew automatically. If it didn't happen, open Check license window and click Renew now.
    Unfortunately, subscription can not be cancelled before it expires.
    What will happen to my images if I don't renew my license? Nothing!
    Absolutely nothing will happen. Your images will be stored wherever you store them and they will be editable at any time as DNG is an open raw format. The only change for you would be that you will not be able to compress more images with Rawsie.
    Can I install Rawsie on multiple computers? Sure, 2 machines
    Yes, your license key will work on two Macs. Any additional computers will require purchasing another license.
    Why my license is deactivated and what can I do about it?
    Basically there are three options.
    • Your order was canceled or refunded, which rendered the activation code invalid.
    • We've noticed some potential fraud activity connected to your license and blocked it.
    • You've used your license key on more than two Macs, so one of the first two got automatically deactivated.
    In any case, please reach out to us at
    How can I move my license to another computer?
    As for now we can only do it manually for you by switching off one of your already used licenses. Please contact us at
    How can I get my money back?
    Please see Refunds policy and mail us at
    Promo codes, gifts
    How can I redeem my promocode?
    Easy, peasy, lemon squeezy. Go to Check license window, click redeem and enter your promocode. You will see an alert in case of success or a error.
    Where can I get promocodes?
    Follow us on to participate in our promos.
    How can I get free days of using Rawsie?
    The most simple way is to spread a word about Rawsie using our affiliate program. Just open the Affiliate program window in the app, copy your personal link and send it to your friends or post it on Facebook and stuff. As soon as one of your friends will join Rawsie, you will receive free days of using Rawsie!
    Suggestions and rants
    We have a tiny special page for that or please email us at
    We are always happy to get your feedback at
    MacOS intro pricing till 09.2020
    No credit card, 30 imgs/day
    Yours forever
    Windows version
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