noopener_by_default is a userscript for Google Chrome written by Jared Sohn.
It adds rel:'noopener' to any target:"_blank" link that does not already have it nor rel:"noreferrer" set. This prevents some security problems but can break sites that require the opener feature of target:"_blank" links. Using this script can be a great way to experience which portions of the web you visit would break if rel:"noreferrer" was on by default.
See About rel=noopener to learn more about what it does and to experience how linking to a malicious page without it can make it easy for you to be phished.
Modify the source to set LOGGING=true if you want to see urls where rel="noopener" was added printed within the console.
###Installation
Use Tampermonkey. Click 'add a new script', copy/paste noopener_by_default.js into it, and click 'save'.
###Enhancements
Pull requests are welcome; some ideas for enhancements include:
- convert to a Chrome extension and add a UI to list the URLs for a tab, show a count, etc.
- create an exception list for urls or links where the opener feature is needed.
- support browsers other than Chrome (via noreferrer)
###Licensing
MIT