Unsafe Cross-Origin Links
What rel noopener noreferrer does, whether you still need it, and how our free audit flags insecure cross-origin resources on your page.
Free to use 1 min read Updated Sep 2026
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How to Fix
The short version, the same steps you see when you click How to Fix in your report.
In order to pass this test, you have to update each link identified in this report, by adding a rel="noopener" or a rel="noreferrer" attribute or both:
rel="noopener" prevents the new page from being able to access the window.opener property and ensures it runs in a separate process.
rel="noreferrer" has the same effect but also prevents the Referer header from being sent to the new page.
See how your site scores right now
Paste your address into the free report, then use the How to Fix button on anything that needs work.
Free to use. Results in under a minute for most sites.