How can I install Visual Studio Code extensions offline?

UPDATE 2017-12-13

You can now download the extension directly from the marketplace.

As of Visual Studio Code 1.7.1 dragging or opening the extension does not work any more. In order to install it manually you need to:

• open the extensions sidebar
• click on the ellipsis in the right upper corner
• choose Install from VSIX

Old Method

According to the documentation it is possible to download an extension directly:

An extension's direct download URL is in the form:

https://${publisher}.gallery.vsassets.io/_apis/public/gallery/publisher/${publisher}/extension/${extension name}/${version}/assetbyname/Microsoft.VisualStudio.Services.VSIXPackage

This means that in order to download the extension you need to know

• the publisher name
• the version
• the extension name

You can find all this information in the URL.

Example

Here's an example for downloading an installing the C# v1.3.0 extension:

Publisher, Extension and Version

You can find the publisher and the extension names on the extension's homepage inside its URL:

https://marketplace.visualstudio.com/items?itemName=ms-vscode.csharp

Here the publisher is ms-vscode and the extension name is csharp.

The version can be found on the right side in the More Info area.

To download it you need to create a link from the template above:

https://ms-vscode.gallery.vsassets.io/_apis/public/gallery/publisher/ms-vscode/extension/csharp/1.3.0/assetbyname/Microsoft.VisualStudio.Services.VSIXPackage

All packages will have the same name Microsoft.VisualStudio.Services.VSIXPackage, so you'll need to rename it after downloading if you want to know what package it was later.

Installation

In order to install the extension

• Rename the file and give it the *.vsix extension
• Open Visual Studio Code, go to menu File → Open File... or Ctrl + O and select the .vsix file
• If everything went fine, you should see this message at the top of the window:

Extension was successfully installed. Restart to enable it.