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I can find the previous localStorage api data in ~/.config/google-chrome/Default/Local Storage directory. I see that these are sqlite files which I can browse with sqlite3.

However, I'm moving from localStorage api to chrome.storage api and saving the information with chrome.storage.local method.

Now, how and where are these files are bing saved in my file system? I can't seem to find any information regarding this in their doc. Any help would be highly appreciated.

QuestionEverything
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    `~/.config/google-chrome/Default/Local Extension Settings/EXTENSIONID HERE` – Rob W Jul 21 '13 at 17:41
  • I didn't see any folder named 'Local Extension Settings' in the 'Default' folder Rob. :( My chrome version is Version 28.0.1500.71 – QuestionEverything Jul 21 '13 at 18:19
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    The data is stored in almost plain text. Just grep for saved data to locate the directory. – Rob W Jul 21 '13 at 18:49
  • @RobW I'm using Chrome 69 and even though the path you provided exists, it's not possible to grep for the data. Maybe Google has improved their security. – thdoan Oct 23 '18 at 19:14
  • @RobW never mind, I was able to find the data after shutting down Chrome. Looks like Chrome puts a lock on these files when it's currently running. – thdoan Oct 23 '18 at 19:22

2 Answers2

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For Windows, you can find different data related to your extension [extension_id] at these places

C:\Users\[user_name]\AppData\Local\Google\Chrome\User Data\Default\Local Extension Settings\[extension_id]

C:\Users\[user_name]\AppData\Local\Google\Chrome\User Data\Default\Sync Extension Settings\[extension_id]

C:\Users\[user_name]\AppData\Local\Google\Chrome\User Data\Default\IndexedDB\chrome-extension_[extension_id]

want to checkout chrome.storage data

  • open developer tools pointing your background page

  • type command

    chrome.storage.sync.get(null, function (data) { console.info(data) });

    or

    chrome.storage.local.get(null, function (data) { console.info(data) });

Rohit Nandi
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For Firefox which now use the same format as Chrome for addon they are saved here:

C:\Users\Marc\AppData\Roaming\Mozilla\Firefox\Profiles\x5jztslz.default\browser-extension-data\

Khado Mikhal
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    [not anymore](https://stackoverflow.com/questions/65448110/where-are-the-data-for-extension-storage-of-a-firefox-extension-stored-in/71468709#71468709) – phil294 Mar 16 '22 at 13:54