If it's a Google Takeout file, expect a nested folder structure (e.g., Takeout/Google Photos/Album Name/ ) containing both the original image and a matching .json metadata file for each photo. Security Warning
Most archives with this name use the "deflate" compression method, making them compatible with almost all modern operating systems (Windows, macOS, and Linux) without needing extra software. Photos-001zip
It is a standard Zip archive , a compressed file format used to group multiple items into a single, smaller file for easier sharing or storage. If it's a Google Takeout file, expect a