Use the official 7-Zip utility or Unzip One from the Microsoft Store.
To access the image inside, you must "extract" it using a compatible archiver: IMG_2427.7z
A file with the extension uses the 7z format , an open-architecture archive format known for high compression ratios. Use the official 7-Zip utility or Unzip One
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 IMG_2427.7z
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.