Windows
Compatible applications
Quick Facts
Basic information about this file format
Extension
.CR3
File Type
Canon Raw 3
Category
Image
Best first step
Use compatible software
Quick Summary
A practical overview of the .cr3 file format
The CR3 file format is a proprietary raw image format developed by Canon. It's the successor to the CR2 format and is used by newer Canon digital cameras to store unprocessed image data captured by the camera's sensor. This format contains all the information captured during the exposure, including…
File extension
.CR3
File type
Canon Raw 3
Category
Image
Recommended action
Open with a trusted compatible app
How to open a .cr3 file
Start with a trusted app that supports this format
- Check the file extension carefully and confirm that the file name really ends with .cr3.
- Use software that supports this file type. If one app does not work, try another compatible program for the same platform.
- Update the application if the file was created by a newer version of the software.
- Scan files from unknown sources before opening them, especially documents, archives, scripts, installers, and executable files.
What is a .cr3 file?
File extension details and usage information
The CR3 file format is a proprietary raw image format developed by Canon. It's the successor to the CR2 format and is used by newer Canon digital cameras to store unprocessed image data captured by the camera's sensor. This format contains all the information captured during the exposure, including color data, metadata, and camera settings. Unlike JPEG files, CR3 files are not compressed using lossy compression, meaning no image data is discarded. This allows for greater flexibility in post-processing, enabling photographers to adjust exposure, white balance, and other parameters without significantly degrading image quality. CR3 files often incorporate Canon's Dual Pixel RAW technology, which provides additional information for fine-tuning sharpness and bokeh after the image has been captured. The CR3 format also supports smaller file sizes compared to CR2, achieved through the use of a more efficient compression algorithm, while maintaining high image quality. CR3 files are typically larger than JPEGs but smaller than TIFFs, offering a balance between file size and image quality. They are primarily intended for professional photographers and enthusiasts who require the highest possible image quality and maximum control over post-processing.
Software Compatibility
Programs that may open or work with .cr3 files
macOS
Compatible applications
Linux
Compatible applications
Mobile
Mobile applications
Can .cr3 files be converted?
Options for saving or exporting this file to another format
In many cases, a .cr3 file can be converted by opening it in compatible software and using an option such as Save As, Export, or Convert. The available output formats depend on the file type and the application used.
- Use the original software that created the file when possible.
- Check whether the application supports exporting to common formats.
- Be careful with online converters when working with private, business, or sensitive files.
- If conversion fails, the file may be corrupted, incomplete, encrypted, or not actually a .cr3 file.
Why can't I open a .cr3 file?
Common reasons this file type may not open correctly
Wrong software
The file may require a specific program that supports the .cr3 format.
Incorrect extension
The file extension may have been renamed manually, even though the actual file format is different.
Corrupted file
The file may be incomplete, damaged during download, or transferred incorrectly.
Outdated app
Your software may need to be updated before it can open newer versions of this file format.
Frequently Asked Questions
Common questions about .cr3 files
To open a .cr3 file, use software that supports this file format.
- Canon Digital Photo Professional
- Adobe Photoshop
- Adobe Lightroom
- Capture One
- IrfanView (with plugins)
Open the file in compatible software and look for options such as Save As, Export, or Convert. If no export option is available, the file may require a specialized converter or the original application that created it.
- Verify that the file extension is correct.
- Install or update compatible software.
- Try another application that supports this format.
- Check whether the file is corrupted, incomplete, or encrypted.
A file extension alone does not guarantee whether a file is safe or unsafe. Only open files from trusted sources, scan unknown files before opening them, and be especially careful with executable, script, archive, and document files.
File safety tips
Use caution with unknown files
Only open files from trusted sources. Before opening a .cr3 file, scan it with antivirus software, verify that the file extension is expected, and avoid running unknown executable, installer, macro-enabled document, or script files.