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:

It often uses the LZMA or LZMA2 algorithms, which generally provide better compression than standard ZIP files, making it ideal for large media files.

A file with the extension uses the 7z format , an open-architecture archive format known for high compression ratios.