What is CR2 file?
CR2 file is created by Canon digital camera, also known as Canon's RAW Version 2 file format, CR2 format designed by Canon, the file extension is .cr2 (.CR2).
CR2 files are not only store image data, but also camera sensor information, metadata such as EXIF (lenses, focal lengths, shutter speeds, apertures, ISOs).
The data stored in the CR2 file is uncompressed or lossless compressed data, so the file size is large and the data can be stored with high quality.
How to open a CR2 file on Windows?
Many apps supports open and edit CR2 file on Windows (including free or paid apps). You can try to download Raw Image Extension from Microsoft Store, it is not app, after install you can view CR2 file or other extension same as JPEG or PNG on Windows, not only CR2, but also supports many type of extension such as CRW, CR3, NEF PEF, ARW, etc.
If you want to convert multiple CR2 files to JPEG or PNG for other purpose such as sharing or emailing, you can download CR2 to - Image Converter from Microsoft Store. This app convert CR2 file to JPG, also work with CRW and CR3 locally on your computer, it do not upload your file to server so your files will be safe.