Why is the recaptcha in the frame shorter than in the window?

Question

Google

Good day to all!
There is a task to bypass recaptcha from google.
I pulled out everything I needed, got the picture, sent it to Antigate, but antigate can’t cope, because. it comes out about 11 characters, well, the guys cannot enter the captcha correctly.
When I open on the site (i.e. there is a frame), I see that there is a number in the picture, 3-4 digits, when I open in a new window, a picture like https://www.google.com/recaptcha/api/image ?c= ".$key
then there are a couple of words of about 11 characters. I use curl, Who faced such a problem ?, please help!

Answer 1

I wanted to ask the author of the question :)
Please tell us step by step the very principle of your pulling, until the moment when you received the picture, sending to Antigate is not of interest)