We hate CAPTCHAs
as much as your customers do.

Botpoison is the invisible, user-friendly anti-spam solution.

1,000 bots blocked in the last 24 hours.

Stop Spam Now

Line drawing of a woman being asked 'Are you a robot?' by a man with a clipboard

Spam prevention, ready to go

Perfect for static sites and native HTML submissions.

No JavaScript required.

Learn more

markup

<!-- 1. Import the @botpoison/browser script -->
<script src="https://unpkg.com/@botpoison/browser" async></script>

<!-- 2. Add your public key to the data-botpoison-public-key attribute -->
<form
  action="https://example.demo"
  data-botpoison-public-key="pk_xxxxxxxx"
>
  <input type="text" name="message" />
  <button type="submit">Send</button>
</form>

Protect your business against -

Noise

Spam messages

Stop bots spamming contact forms and surveys.

Hackers

Account takeover

Prevent identity theft and brute-force attacks targeting authentication endpoints.

Scammers

Affiliate & ad fraud

Shut down fake votes, purchases and reviews.

Solution comparison

	Botpoison	reCAPTCHA	Akismet	Weakness
Proof-of-work Puzzle for computers	Core
CAPTCHA Puzzle for humans		Core		Conversion killer
Machine learning	Complementary	Complementary	Core	Biased models, data-reliant
IP reputation	Complementary	Complementary	Complementary	Can be spoofed

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FAQ

: Botpoison combines:
Hashcash, a cryptographic hash-based proof-of-work algorithm.
IP reputation checks, cross-referencing proprietary and 3rd party data sets.
IP rate-limits.
Session and request analysis.
: Contact us and we'll help you out.