Enabling Captcha for Your Unbounce Domain

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If you are receiving a lot of spam form submissions on your landing pages, turning Captcha on for your Unbounce domain(s) can help mitigate them.

What is a Captcha?

A Captcha is an automated test that’s designed to determine whether a visitor is really human or not. You have likely encountered a variety of Captcha implementations when browsing the internet. Unbounce utilizes Cloudflare’s Turnstile to help filter out non-human form submissions on your pages.

Enabling Captcha on Your Unbounce Pages

Note

Captcha is enabled at the domain level, so in order to use it, you will need to have at least one custom domain added

To enable Captcha on all pages of a domain, follow these steps:

  1. Log into Unbounce.
  2. From the left-hand side menu, click the Settings tab. From the drop-down menu that appears, click Captcha.
  3. The Captcha page will appear.
  4. To enable a Captcha on a domain or on all domains, toggle the button next to the domain or toggle to enable the Captcha on all domains.
  5. Click Publish at the top-right-hand corner to save the changes.

Once published, Captcha will be enabled on all pages and page paths tied to that domain.

How does Captcha Appear for Visitors to My Landing Pages?

Unbounce’s Captcha will never present a visitor with a visible challenge, so human visitors will never know Captcha is enabled on your pages.

Captcha takes a holistic view of a user’s behaviour and history of interacting with content across the internet and most of the time it can determine whether or not a user is a bot without providing a visible challenge.

What Happens When a Bot Fails a Captcha Test?

Any form field submissions that fail a Captcha test will be marked as spam by Unbounce and filtered out of your leads table.

FAQ

Will Captcha Stop All Bots?

Adding a Captcha to your page will lower the amount of spam submissions on your pages, but some bots can get past Captcha.

Are there any downsides to using Captcha?

In very rare instances, where a visitor's behaviour, internet history, and browser configuration are suspicious or out of the ordinary, Captcha may filter out a human generated form submission.

In addition, some older browsers, browsers that block some content, or browser extensions (like adblockers) may block the scripts that Turnstile/Captcha needs to run, which will result in that lead being filtered out as though it were a bot.

While both scenarios are unlikely, we recommend leaving Captcha off unless you’re experiencing an issue with spam form submissions.

Can I enable/disable Captcha on a specific page?

Captcha is enabled at the domain level in Unbounce, so it’s either enabled or disabled for every page on a specific domain in your account