Google, Microsoft and Amazon pay to unblock ads: Report

Ad-blocker popular among Internet companies
Web giants pay to unblock ads: Report   

Fifty million monthly active Internet users count on Adblock Plus software to block annoying online advertisements--and that doesn't sit well with Internet giants Google, Amazon and Microsoft.

The three online heavyweights have paid the German start-up behind the ad-blocking tool, Eyeo, to bypass the software and to stop blocking advertisements on their popular websites, according to the Financial Times.

The three companies have made deals with Eyeo to get on its "whitelist," which allows sites to run unblocked ads only if they fit certain criteria from the start-up, the FT reported. Companies must pay Eyeo to get on its list.—

Man computer
Thomas Barwick | Getty Images

Ad-blocking software has exploded in popularity in recent years. Eyeo claims its Adblock Plus has become the most popular browser extension ever at more than 300 million downloads.

Read MoreHow Quora plans to sidestep Google's algorithm

The move from the three big Internet companies demonstrates a growing worry over ad-blocking software and how it could cut into online advertising revenue, the FT reports.

Taboola, an online content recommendation platform used by NBC, which is part of NBCUniversal, the parent of CNBC, has also entered into a deal with Eyeo.

Read the full Financial Times story here. (Paywall)