Applications like Keka or The Unarchiver can handle .7z files. Mobile: Use apps like iZip (iOS) or ZArchiver (Android). Security Warning
If you received from an unknown source or via an unexpected email, use caution. Attackers sometimes hide malware inside compressed archives to bypass basic email scanners.
To access the image inside, you must "extract" it using a compatible archiver:
These archives can be protected with strong AES-256 encryption, requiring a password to view or extract the contents.
Use the official 7-Zip utility or Unzip One from the Microsoft Store.
The "IMG_2427" prefix is a standard naming format used by many digital cameras and smartphones (like iPhones) to label photos sequentially. How to Open IMG_2427.7z