Use "Normal" for a balance of speed and size, or "Ultra" for maximum compression (which takes longer).
You need 7-Zip (Windows) or a compatible archiver like Keka (macOS). space.7z
A space.7z file is a compressed archive format designed to save storage space by using high-ratio compression methods like . 7z files: How to Properly Open/Extract space.7z Use "Normal" for a balance of speed and
Right-click the space.7z file, select the 7-Zip menu, and choose "Extract Here" or "Extract to [folder name]" . Best Practices for Compression ( space.7z ) select the 7-Zip menu