How to install Chrome extensions manually. You needed only to enable Developer mode before installing a CRX (Chrome extension) file. Download the CRX file to your computer for the Chrome. Jul 27, 2016 - However, this approach doesn't allow you to save the chrome extension as a CRX file. Sometimes you may want to download the extension file. Download Chrome Extensions CRX File. Whenever you add a Chrome plugin, it is installed automatically. To overcome this and download it to your PC you may use either of the two methods mentioned below. Method 1: Using Chrome Extension. Add the Get CRX extension from the following link.

Try to install an extension from outside the Chrome Web Store and Chrome will tell you that extensions “can only be added from the Chrome Web Store.” However, this message is incorrect – you can still install extensions from elsewhere.

This restriction is in place to prevent malicious websites from installing bad extensions, apps, and user scripts. You should only install extensions from legitimate websites you trust – the LastPass website, for example.

Manually Installing an Extension

To install an extension manually, click the wrench menu, point to Tools, and select Extensions to open the Extensions page.

If you’re seeing the message, Chrome has already downloaded the extension, app, or user script to your computer. You’ll find it in Chrome’s default download folder. Extensions and apps have the .crx file extension, while user scripts have the .user.js file extension.

If it didn’t download to your computer, right-click the extension installation link on the page and use the Save As option to save it to your computer.

Drag and drop the CRX (or user.js) file onto the Extensions page to install it.

You’ll be prompted to confirm installation of the extension, just as if you had installed it from the Chrome Web Store.

Always Allow Extensions From Outside the Chrome Web Store

If you frequently install extensions from outside the Web Store, you can allow extension installation from any website by adding a command-line flag.

To add a command-line option, you’ll have to edit the Chrome shortcut’s properties. To access these on Windows 7, assuming you launch Chrome from your taskbar, right-click the Chrome icon on your taskbar, right-click Google Chrome in the menu that appears, and select Properties.

If you launch Chrome from your Start menu or your desktop, right-click the shortcut on your Start menu or desktop instead.

Select the Shortcut tab and add the following text to the end of the Target box:

–enable-easy-off-store-extension-install

After changing this setting, close all Chrome windows and launch Chrome from the shortcut you modified. You may want to wait a few moments after closing all Chrome windows to ensure Chrome is no longer running in the background

Try to install an extension from a web page and you’ll see a familiar installation prompt – click Continue to the install the extension.

Changing Chrome Policies

Chrome includes policy settings designed for system administrators. If you use Chrome in your business and want to allow extension installation from a specific website or two, you can modify Chrome’s policies. This setting is changed in the registry on Windows, and in Chrome’s preferences files on Mac and Linux.

For example, on Windows, you could add the following registry entry to allow extension installation from lastpass.com:

SoftwarePoliciesGoogleChromeExtensionInstallSources1 = “https://lastpass.com/*”

For more information about this Chrome policy setting and other Chrome policy settings, consult the Policy List page on the Chromium Project’s website.

I'd like to download the .crx file of an extension from webstore, I use fiddler to analyze the network request when I install an extension from webstore and got it.
For example, for the extension: https://chrome.google.com/webstore/detail/bjclhonkhgkidmlkghlkiffhoikhaajg
the download link is: Configure serial port windows 10.

https://clients2.googleusercontent.com/crx/download/OgAAADQ_Loe5gfVPF2OUaB35tvex-NKlmA8V4K5YlWuvLCknMH7egLLmnMoFuCZePl_idE1GMf8jZC2KbjQqyyLDoDAAxlKa5eDp-z9frOppHWtQsRU3-iGrrrrA/extension_1_7_11.crx
Now I'm wondering if there is a universal method for get .crx of an extension, the problem is how did Google encryption

bjclhonkhgkidmlkghlkiffhoikhaajg

into

OgAAADQ_Loe5gfVPF2OUaB35tvex-NKlmA8V4K5YlWuvLCknMH7egLLmnMoFuCZePl_idE1GMf8jZC2KbjQqyyLDoDAAxlKa5eDp-z9frOppHWtQsRU3-iGrrrrA ?

any idea will be helpful.

10 Answers

For one of my extensions I had to download other CRXs automatically knowing only extension ID. I solved this by opening the following URL:

this page will forward you to that https://clients2.googleusercontent.com/crx/download/ address.

I don't remember already how I came up with that URL (it was either in page source somewhere or I used network sniffer), but it has been working great for me since last December, so it looks reliable.

The CRX file itself can be directly downloaded from
https://clients2.google.com/service/update2/crx?response=redirect&prodversion=[PRODVERSION]&acceptformat=crx2,crx3&x=id%3D[EXTENSIONID]%26uc

• [PRODVERSION] is the version of Chrome, which must be 31.0.1609.0 at the very least, and
• [EXTENSIONID] is the ID of the extension

(New in 2018)acceptformat=crx2,crx3 instructs the server to also respond with extensions in the CRX3 format (instead of 204 No Content when the extension is not available as CRX2).

If the extension you're using contains OS-specific modules (e.g. NaCl), then you have to add additional parameters (os, arch, nacl_arch).

For the full logic of generating a complete CRX download URL, see the get_crx_url function in https://github.com/Rob--W/crxviewer/blob/master/src/cws_pattern.js.

This is a part of the Chrome Extension Source Viewer extension, available in the Chrome Web Store: https://chrome.google.com/webstore/detail/chrome-extension-source-v/jifpbeccnghkjeaalbbjmodiffmgedin

Note that opening the previous URL in Chrome will not trigger a download because Chrome automatically intercepts responses whose Content-Type is set to application/x-chrome-extension. If you want to programatically download the crx file in a Chrome extension, change the MIME-type to application/octet-stream (e.g. as done in src/lib/crx-to-zip.js).

There's this website just to do exactly that:

I wrote a small python script to automate that process what @serg @Rob W

you can use that also.

This is how you have to use.

Create a bookmark add the javascript function as the address. Browse to the chrome extension you want to download then click on the bookmark and it should start downloading.

Thanks

This is a lower-tech way of doing it than to use fiddler, and I realize this is three years old now, but I always look to see if someone else has solved the problem. So I found someone did, and I just used their solution several times successfully. Their solution is an extension that can download other extensions, called Give Me CRX:

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Also, I recommend to try this website http://crxextractor.com.Here you can download an extension by it's Chrome Webstore URL and extract it's source code in the browser, no additional software required, and everything get done in a click or two.

None of the manually ways in this post works for me so i searched for a URL to download the extension direct.Find this and works perfect for me.

You must replace ###EXTENSION_ID### with the extension id from the chrome shop.Its part of the URL.

Example Google Translate Extension:

You can use the below URL template,

The PRODVERSION is the Chrome version. (get it from settings -> Help -> About Google Chrome).Ex : Version 69.0.3497.100 (Official Build) (64-bit)

The EXTENSIONID is the id for the extension. Ex : Here is a sample plugin, https://chrome.google.com/webstore/detail/jetbrains-ide-support/hmhgeddbohgjknpmjagkdomcpobmllji?hl=en the id is hmhgeddbohgjknpmjagkdomcpobmllji

So sample request to download will be https://clients2.google.com/service/update2/crx?response=redirect&prodversion=69.0.3497.100&x=id%3Dhmhgeddbohgjknpmjagkdomcpobmllji%26uc

To download the chrome extension from a given id, you could just use like this

The above one is the download URL for the chrome extension. There is also a chrome extension which could help you for downloading chrome extension as zip or crx file.https://chrome.google.com/webstore/detail/crx-extractordownloader/ajkhmmldknmfjnmeedkbkkojgobmljda

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Also the code for how its done is available in this Github repo

protected by Community♦Aug 23 '15 at 16:25

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