As of Chrome 33,
Windows stable/beta channel users can only download extensions
hosted in the Chrome Web store,
except for installs via
Protecting Windows users from malicious extensions).
You can still create your own
.crx file and use it for testing in the dev channel,
but you can't host that file on your own server.
This page tells you how to host
on your own server.
If you distribute your extension, app, or theme solely through the
Chrome Web Store,
you don't need this page.
Instead, consult the
store help and
By convention, extensions,
installable web apps, and themes are served—whether
by the Chrome Web Store or by a custom server—as
When you upload a ZIP file with the
Chrome Developer Dashboard,
the dashboard creates the
.crx file for you.
If you aren't publishing using the dashboard,
you need to create the
.crx file yourself,
as described in Packaging.
You can also specify
autoupdate information to ensure that
your users will have the latest copy of the
A server that hosts
must use appropriate HTTP headers,
so that users can install the file
by clicking a link to it.
Google Chrome considers a file to be installable if either of the following is true:
The file has the content type
The file suffix is
.crxand both of the following are true:
The file is not served with
the HTTP header
The file is served
with one of the following content types:
- empty string
- The file is not served with the HTTP header
The most common reason for failing to recognize an installable file
is that the server sends the header
The second most common reason
is that the server sends an unknown content type—one
that isn't in the previous list.
To fix an HTTP header issue,
either change the configuration of the server
or try hosting the
.crx file at another server.