IP from Omnibox
To copy your IP address, type copyip into the omnibox, then press tab and enter.
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Summary
Copy your IP to the clipboard from the omnibox. Type "copyip", press tab, space and then enter. Similar extensions I've seen require you to click a button in the toolbar, which consumes screen space. Note that it may take a few seconds for the IP to be copied.
My IP is faked in the video. The extension will give you your real IP.
Privacy note: In order to obtain your IP, this extension calls a web service hosted on AppEngine using CORS over HTTPS. The data transmitted is the same data the browser sends to any web server when loading a web page.
User reviews
Safety
Risk impact
IP from Omnibox is relatively safe to use as it requires very minimum permissions.
Risk likelihood
IP from Omnibox may not be trust-worthy. Avoid installing if possible unless you really trust this publisher.
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Here are some Chrome extensions that are similar to IP from Omnibox: