How LunaZip works.
A tour of what happens inside LunaZip when you open, pack or unpack an archive. This map is drawn from LunaZip's own design, with the code and the private details left out. Click any box to open it, or follow a journey to watch a job move through the app.
LunaZip has an app for Windows and one for Apple-silicon Macs. Each has its own brain that holds all the real rules, and both hand the actual packing and unpacking to the bundled 7-Zip engine.
- Windows app: the file list, Luna's packing ring, the tools, settings and the About card.
- Windows brain: everything LunaZip knows how to do, kept apart from the screens so it can be checked automatically.
- Explorer add-ons: LunaZip in Windows 11's first right-click menu, and a preview of what's inside a zip.
- Mac app and Mac brain: the same Luna look and the same rules on the Mac, with a Finder menu and Quick Look.
- Windows installer: installs LunaZip for everyone on the PC and can repair or remove it. On a Mac, LunaZip comes as a notarized disk image.
- Automatic checks: hundreds of tests that run the real 7-Zip engine on both platforms.
- Outside helpers: the 7-Zip engine, WinRAR or rar if you have it, Microsoft Defender, and signed updates from luna.wolfbyte.works.
What stays on your computer
- Your files, archives and their names. LunaZip never uploads them.
- Saved passwords, locked to your Windows account or your Mac Keychain, with Windows Hello or Touch ID if you turn it on.
- Settings, recent archives, Activity and the search index.
LunaZip goes online only to check for updates, or when you ask it to peek inside a zip on the web. The privacy policy has the details.