As part of a Google Chrome extension that I'm building I need to be able to tell if a user has signed in to the Google Chrome browser while the extension is enabled.

How can I do this?

Please note that using OAuth2 (and thus, the chrome.identity API) is beyond the scope of my project so I need to find another way.

EDIT: my question is not a duplicate of this one because the solution in that thread no longer works.

As part of a Google Chrome extension that I'm building I need to be able to tell if a user has signed in to the Google Chrome browser while the extension is enabled.

How can I do this?

Please note that using OAuth2 (and thus, the chrome.identity API) is beyond the scope of my project so I need to find another way.

EDIT: my question is not a duplicate of this one because the solution in that thread no longer works.

• javascript
• google-chrome
• google-chrome-extension
• oauth-2.0
• google-chrome-app

• chrome.identity is the only api for that. Why do you need another way? – Daniel Herr Commented Aug 17, 2016 at 0:01
• Possible duplicate of Detecting whether user is logged in or not from a Chrome extension – Haibara Ai Commented Aug 17, 2016 at 0:51
• You should clarify whether you mean signed into chrome, e.g. from the chrome://settings page, or just signed into a google account without signing into chrome itself. – kzahel Commented Nov 18, 2017 at 0:37

2 Answers 2

Check if LSID cookie is set:

chrome.cookies.get({url:'https://accounts.google.', name:'LSID'}, function(cookie) {
    if (cookie) {
        console.log('Sign-in cookie:', cookie);
    }
});

manifest.json permissions: "cookies", "https://accounts.google./"

chrome.identity.getAuthToken({interactive: false}, function (token) {
    if (!token) {
        if (chrome.runtime.lastError.message.match(/not signed in/)) {
            console.log("not singed in");
        } else {
            console.log("singed in");
        }
    }
});

And don't forget to add "identity" to permissions.