reCAPTCHA knowledge base

How to detect reCAPTCHA version V2 / V3 / Enterprise?

reCAPTCHA V2 also known as I'm not a robot reCAPTCHA is a very popular type of captcha that looks like this:
reCAPTCHA V2
reCAPTCHA V3 is the newest type of captcha from Google. It has no challenge so there is no need for user interaction. Instead it uses a "humanity" rating - score that looks like this
reCAPTCHA V3

How to get reCAPTCHA sitekey?

  1. 1.
    Look at the element's code at the page where you found reCAPTCHA
2. Find a link that begins with www.google.com/recaptcha/api2/anchor or find data-sitekey parameter
reCAPTCHA site key string always starts with "6L" symbols and always has 40 symbols length
Regular expression 6L[a-zA-Z0-9-_]{38}
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How to detect reCAPTCHA version V2 / V3 / Enterprise?
How to get reCAPTCHA sitekey?