How to add google captcha before opening the page?

Question

CAPTCHA

Googling leads to unnecessary results.
I have some website, html.
I need something that when I get to a CERTAIN page, first a
blank page is displayed ONLY WITH CAPTCHA,
the captcha is passed,
then we show the page in full, and so that the captcha cannot be
bypassed Manul, article, what tonit?

Answer 1

https://github.com/yaoweibin/nginx_http_recaptcha_...