Opera 50 introduces anti-Bitcoin mining tool.

[Faybert]

New Opera 50, features anti-Bitcoin mining tool, improvements in your VPN, save PDF and other improvements: New year, new browser. Opera 50 introduces anti-Bitcoin mining tool - Opera Desktop

 

[Paul.R]

Or you can use this: GitHub - keraf/NoCoin: No Coin is a tiny browser extension aiming to block coin miners such as Coinhive. and you don't need to install a chinese software.

 

[Winter Soldier]

Adguard also fights cryptominers on websites.
AdGuard fights stealth cryptocurrency mining on websites

 

[Faybert]

Or you can use this: GitHub - keraf/NoCoin: No Coin is a tiny browser extension aiming to block coin miners such as Coinhive. and you don't need to install a chinese software.

why install third-party extensions if I have this on my browser? I do not use Opera just because of the anti-Bitcoin mining tool, but because of its performance, it is the fastest for me, it has my favorite extensions, unlimited VPN, image capturing tool or page text (I use a lot) embedded messengers, save PDF, anyway, it's the only browser that suprized my needs