I tried to install the Reddit Enhancement Suit, when Chromium complained that I can only install extensions easily from Web Store. It downloaded the .crx file. How can I apply it? The linked help page says:

Steps on adding extensions from other websites

We recommend you only add extensions from other websites that you trust. In Chrome, you can follow these steps to add the extension:

  • Download the extension file from the website and save it to your computer.
  • Click the wrench icon on the browser toolbar.
  • Select Tools > Extensions.
  • Locate the extension file on your computer and drag the file onto the Extensions page.
  • Review the list of permissions in the dialog that appears. If you would like to proceed, click Install.

I'm running chromium in X and have no idea how I'm supposed to drag from xterm.


You can try this to see if it works:

  • Open a file manager in X (for example in KDE, open dolphin).
  • Go to the location of the downloaded CRX file (Downloads folder?).
  • Click on the downloaded CRX file and drag it into a window of Chromium.

This process should install the extension.


I had this problem with mailvelope extension I wated to try in Chromium on Debian.

Solution was: CHROMIUM_FLAGS='--enable-remote-extensions' in /etc/environment (relogin then…) or just start Chromium on CLI with: CHROMIUM_FLAGS='--enable-remote-extensions' chromium.

Afterwards I was allowed to install with the link from the project website withour any further issue.


You can also try:

  • download the crx
  • then change the file extension to zip
  • unzip it
  • go to chrome://extensions
  • enable developer mode
  • upload unpacked extension
  • select your folder

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