After a thorough examination of the methods, tools, and technologies surrounding "fb locked profile cover photo viewer top," the definitive conclusion is clear: Every tool, extension, or website that claims otherwise is either an ineffective relic, a scam, or a malware delivery system.

Facebook’s infrastructure is built on stringent access controls. When a profile is locked, the server simply does not send the full image data to non-friends. Any website or app claiming to be a "cover photo viewer" for locked profiles falls into one of three categories:

They force users to click through multiple pages, pop-ups, and advertisements.

Change the URL from www.facebook.com to mbasic.facebook.com .