[google-chrome] Chrome extension id - how to find it

How can I find out what the chrome extension id is for an extension?

If you just need to do it one-off, navigate to chrome://extensions. Enable Developer Mode at upper right. The ID will be shown in the box for each extension.

Or, if you're working on developing a userscript or extension, purposefully throw an error. Look in the javascript console, and the ID will be there, on the right side of the console, in the line describing the error.

Lastly, you can look in your chrome extensions directory; it stores extensions in directories named by the ID. This is the worst choice, as you'd have extension IDs, and have to read each manifest.json to figure out which ID was the right one. But if you just installed something, you can also just sort by creation date, and the newest extension directory will be the ID you want.

Use the chrome.runtime.id property from the chrome.runtime API.

As Alex Gray points out in a comment above, "all of the corresponding IDs are actually on the extensions page within the browser".

However, you must click the Developer Mode checkbox at top of Extensions page to see them.

Extension IDs can be found in:

chrome://extensions (Chrome_Hotdog >> More_tools >> Extensions) Developer mode.

For Linux: $HOME/.config/google-chrome/Default/Preferences (json file) under ["extensions"].

All extension ID are listed here:

chrome://system