123FormBuilder Web Form Security: Captcha, IP limitation, and more

You can protect your forms in various ways using our form builder: through Captcha images, IP blocking, country filter, or even password protection. No matter where you choose to publish your online form, we offer you a variety of options to secure it from external threats. Limit your submissions by IP or country or add a password to your form to keep spammers at a distance. To make sure that no robots will submit your form, add a verification number (Smart Captcha).

Go to the Security tab, on the left, to set the security measures you want for your web form. It’s simple as that!

Security options

However, this is not all we deal with regarding your safety. See our page about how we handle form security for additional information or our blog article: 5 Ways to Build a Secure Web Form for Your Website


  1. How can I block SPECIFIC IP addresses? (I don’t want to limit submissions from everyone, just IP addresses that are known problems.)

    1. I am afraid that we can not block specific IP addresses. If you know their email addresses you can limit their submission based on that. More details you can find here

  2. how do i disable a form…one of my forms is past the deadline date..i would like to stop any applications from being filled out

  3. I am a gold member. Your info page says the forms are protected with the HTTPS when on the form. I don’t see it. How can I get that so my members will feel more comfortable. I am using the captcha for all forms?
    It took a little while to learn the specifics, but I LOVE your forms and how they work!!!! Good job guys. John

    1. Hello John!

      In order to protect your web forms with HTTPS, you’ll need to enable the SSL encryption at Connection Type in the Publish section. But this works only for Platinum plans and above. If you want to protect your web forms through Secured Socket Layers, you’ll need to upgrade your account.

      However, if your web forms are embedded on a webpage, it all depends on the security measures you have established for the respective webpage/website. In that case, as a Gold member, you can embed your web forms on a webpage with HTTPS you own.

      Have a look at our Features Matrix and see what each plan has to offer.

      Thanks for your kind words!

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Frequently Asked Questions

Here is a list of the most frequently asked questions. For more FAQs, please browse through the  FAQs page.

Is this service free?
Yes, we offer a free form builder service. Just sign up to the Basic plan and you are all set. This plan is forever free, but you are limited with a few features only, such as 5 forms per account, 100 submissions per month and you have to keep the backlink to 123FormBuilder on your forms. Check out our features matrix for more information.
How many forms can I create?
It depends on the service plan you are on. Higher service plans enable more features, including more web forms for your account. If you need more forms, go to the My Account section of your account and click the upgrade button. To create an unlimited number of forms, either upgrade to the Platinum service plan or higher. Consult our features matrix for more information.
How can I publish my forms?
You can publish your forms in many ways, by using their direct URL or HTML link, embedding them with a JavaScript code, Inline HTML or iFrame, using the Facebook app or the WordPress plugin, using popups, the Blogger code snippet and many more. Once you have created and customized your form, go to the Publish section to complete your work. Read more in our documentation.
How do I change my form design?
You can change the design of your form for more information. in the Themes section, which is located in your form settings. We offer a set of more than 30 predefined form themes for your forms, but you can also create your own from scratch. You can customize the submit button, the logo and more. To apply your own stylesheets, all forms come with a custom CSS editor.

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