How to open a .APPX file online
No extra software to download or install.
Pick your .APPX file
Drag it in or click to choose it. We read its contents list first, so it opens right away without unpacking everything.
Browse what's inside
See every file with its size, how much it's compressed and its date, and search by name across all the folders.
Preview or download
Click a file to preview text or images, or save just that one. Need everything? Download it all as a single ZIP.
About .APPX files
What a .APPX file is, and what's inside it.
An APPX file is a Windows app installation package introduced with Windows 8. On Windows 10/11, double-click it and the built-in App Installer handles it, or run Add-AppxPackage -Path app.appx in PowerShell. The main issue people hit is a "package not trusted" error, which means the signing certificate is not in your trust store.
Programs that open .APPX files
| Full name | Microsoft Windows App Package (AppX) |
|---|---|
| Developer | Microsoft |
| First released | 2012 (Windows 8); largely superseded by MSIX since 2018 |
| Category | Archives |
| MIME type | application/appx |
| Signature | 50 4B 03 04 "PK" - standard ZIP (OPC) local file header |
Related viewers
Found something inside the archive? Open it here.
Do I have to unpack the whole .APPX file?
No. The viewer reads its table of contents first and only unpacks a file when you click it. That works even with multi-gigabyte archives, because we read just the bytes we need.
Can I open password-protected archives?
Yes, for ZIP (ZipCrypto and AES) and 7Z. You'll be asked for the password,. We can't recover forgotten passwords.
Is my .APPX file uploaded anywhere?
No. The code that unpacks the file is downloaded once and then reused.
Why does a .docx or .apk open as an archive?
Because they are ZIP archives under the hood. Office documents, Android apps, Java programs and EPUB books all use ZIP as their container.
What about split archives (.001, .z01, .part1.rar)?
Multi-part archives need all their parts. Today you can open the first part to see the file list; joining parts is on our roadmap.
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