[Chrome Extension] Get Google Account Id from Google Photos
This Chrome extension helps you get your Google account/user id from Google Photos. There is already an easy way [1] to get Google account id. This post provides another way to get it.
The idea is that there is a variable window.WIZ_global_data in the HTML source of https://photos.google.com/. The "S06Grb" field of the variable contains Google account id. We will find the string of the variable in the HTML source and call JSON.parse method to convert it to a regular variable, and read the id from the variable.
The following is source code for above idea.
manifest.json:
{
"manifest_version": 2,
"name": "guserid",
"description": "Get Google user id",
"version": "0.1",
"browser_action": {
"default_title": "get Google id",
"default_popup": "popup.html"
},
"permissions": [
"tabs",
"<all_urls>"
]
}
popup.html:
<script src="popup.js"></script>
popup.js:
chrome.runtime.onMessage.addListener(function(request, sender) {
document.write(request.id);
});
chrome.tabs.executeScript(null, {file: "getid.js"});
getid.js:
function find_WIZ_global_data(elm) {
if (elm.nodeType == Node.ELEMENT_NODE || elm.nodeType == Node.DOCUMENT_NODE) {
for (var i=0; i < elm.childNodes.length; i++) {
// recursively call self
find_WIZ_global_data(elm.childNodes[i]);
}
}
if (elm.nodeType == Node.TEXT_NODE) {
if (elm.nodeValue.startsWith("window.WIZ_global_data")) {
var jsonString = elm.nodeValue.replace("window.WIZ_global_data = ", "");
jsonString = jsonString.slice(0, -1);
var wiz = JSON.parse(jsonString);
chrome.runtime.sendMessage({id: wiz["S06Grb"]});
}
}
}
find_WIZ_global_data(document);
References:
| [1] | How to get your Google account/user ID · GitHub |
| [2] |
| [3] | Message Passing - Google Chrome |
| [4] | Getting the source HTML of the current page from chrome extension - Stack Overflow |
| [5] | [JavaScript] Traverse DOM Tree |
| [6] |