Is it safe to put the reCaptcha private key in html page?

Everyone can see my HTML code and accordingly my reCaptcha private key. Is it a safe thing?

Solution

From the reCAPTCHA docs:

The secret key authorizes communication between your application backend and the reCAPTCHA server to verify the user's response. The secret key needs to be kept safe for security purposes.

https://developers.google.com/recaptcha/intro

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