You can't, the first few times you use a reCaptcha, you won't see the pictures. But the more you use it, the harder it gets.
Put the reCaptcha at the end in your website, or put it in comments untill you are ready to test/launch the website.
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.