Invisible CAPTCHA to avoid SPAM submissions

Finally found a nice SPAM protection solution

Example HTML markup:

<label for="email">Email:</label>
<input name="email" type="text" value="" />
<span class="confirmation-field">
<label for="email-confirmation">Email confirmation:</label>
<input name="email-confirmation" type="text" value="" />


.confirmation-field { display: none; }

Author: Michal Zuber

Full stack developer, biker and rollerblader. Owner and developer at Co-founded Blog at

One thought on “Invisible CAPTCHA to avoid SPAM submissions”

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