How to open a .VSIX file online
No extra software to download or install.
Pick your .VSIX 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 .VSIX files
What a .VSIX file is, and what's inside it.
A VSIX file is an extension installer package for Microsoft Visual Studio or Visual Studio Code. On Windows, double-click it to install the extension; for VS Code, drag it onto the Extensions panel or run "code --install-extension file.vsix". A VSIX is a ZIP archive, so you can rename it to .zip and open it with 7-Zip to inspect its contents without installing.
Programs that open .VSIX files
| Full name | Visual Studio Extension Package |
|---|---|
| Developer | Microsoft |
| First released | 2010 (Visual Studio 2010; replaced older .vsi/.msi extension model) |
| Category | Archives |
| MIME type | application/vsix |
| Signature | 50 4B 03 04 "PK" - standard ZIP local file header |
Related viewers
Found something inside the archive? Open it here.
Do I have to unpack the whole .VSIX 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 .VSIX 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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