Adding Captcha's to Your Blogger Form

You can add a Google supported captcha spam protection to your form hosted by popular blog platforms including: and 

1. Get a reCaptcha key from Google:

2. Paste this script into your form between the <form> and </form> tags:

<script src="" type="text/javascript"></script>

     <iframe src=""
         height="300" width="500" frameborder="0"></iframe><br>
     <textarea name="recaptcha_challenge_field" rows="3" cols="40">
     <input type="hidden" name="recaptcha_response_field"

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3. Replace in the above "your_public_key" with your own public key obtained in step 1.