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Has anyone successfully downloaded Google Chrome apps (or extensions or whatever they are called) from another browser and then installed them on Chrome? Google Web Store and Google Play are blocked where I work, and I just want to install Adblock.

When I visit the web store (on a non-blocked network), it just says that I need to install Chrome first.

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  1. Locate the extension folder from an existing installation. You should find it in

    Chrome user data directory → Extensions → {a 32 "a→p" character hash}

    It should be fairly obvious which hash corresponds to which extension upon inspection, but you can often find a readme.txt, or a messages.json file in a _locales sudfolder, from which you can identify the extension. On my local system the hash for Adblock was cfhdojbkjhnklbpkdaibdccddilifddb (this is probably globally unique, but just check), and then there were versioned subfolders. Choosing the most recent version directory should be fine.

  2. Copy this folder to the new computer.

  3. Go to chrome://extensions in the target Chrome browser and enable "Developer mode" by the checkbox in the upper right.

  4. Press "Load unpacked extension..." and choose the version-number folder inside the desired extension folder.

(3 and 4 as described by Google)

The extension should now be loaded.


I tried this locally by creating a new Chrome user profile and loading the extension as described above, and it seemed to work at a first glance (it loaded OK), but I assume no liability :-) .

Also, if your company blocks the extension store to avoid its employees installing extensions, you should be aware of that circumventing such policies might not be appreciated. The better choice for your future employment might be to talk to the department responsible for the block.

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  • Thanks, I'll try this when I get home (to get hold of the extension). Adblock itself is not forbidden, people already use it on Firefox, so that shouldn't be a problem with the company. – Indivara Aug 21 '13 at 23:27
  • I've accepted your answer because technically it is on the spot, I installed Adblock without a hitch. Unfortunately, the thing doesn't work. They've done something that prevents it from actually blocking anything, maybe a connection to Google Store (which I haven't got) is required. – Indivara Aug 28 '13 at 4:35
  • Confirm: Adblock is cfhdojbkjhnklbpkdaibdccddilifddb on my system too, so it is universal. I also added a few hints to your answer. – Torben Gundtofte-Bruun Aug 5 '14 at 11:18
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    One comment: Chrome 56 refused to import an extension, because a dir called _manifest has started with _, which means, it is a system dir - Just rename it, and remove _, and will work! – antivirtel Mar 5 '17 at 12:03
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    If you find Chrome deleting the unpacked extension folder, move the unpacked extension to a different folder such as "C:\Users\username\Dropbox\Chrome.Extensions" and the extension can be loaded. Using cloud drives like Dropbox allows managing these extensions from all platforms. – user2008151314 Dec 20 '18 at 19:34
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This is pretty simple. In your chrome account. Click on settings and then log in. After logging in you chrome extensions will automatically populate.

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    Are you sure this works when the app store is blocked? – Arjan May 21 '17 at 7:40
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This extension works pretty well, creates an html page list of all extension and even sorts them into enabled and disabled: Export links of all extensions. You then just have to click through them to install, but I didn't find a way to bulk import using the copy into directory method anyway, I think you still had to click multiple times to load unpacked. There should really be a Chrome version of this: OPIE Firefox Extension which would pack up and export/import all manor of profile parts.

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  • How is this better than the accepted answer? – RalfFriedl Mar 15 '19 at 6:32
  • "..you still had to click multiple times to load unpacked." But I also found an internal list that converts the hashes to names. Goto chrome://about and click on chrome://system and then expand extensions. 'Export links' is still the fastest method in bulk, but this is useful in case you want to copy just one or two, or avoiding are download. – alchemy Mar 29 '19 at 4:09
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So after painstakingly packing, air dropping the zipped folder, and unpacking some test extensions to see if the process works (which it did), I went to the extension store to just download a really simple extension that decided I wanted, and when I clicked "Add to Chrome" a pop-up asked if I wanted to just "Sync" my extensions across my accounts. So I clicked yes, and a few seconds later all my extensions were populated on my new computer's Chrome browser. Boom. So I'd recommend trying this route first for anyone who is wanting a quick fix.

  1. Go here: https://chrome.google.com/webstore/category/extensions
  2. Add an extension the you already use elsewhere
  3. Accept the "Sync" my extensions
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