Electronic signature with 123FormBuilder

123FormBuilder gives you the ability to create electronic forms of any kind and add electronic signatures to them. Use the Signature field to get an electronic equivalent of the handwritten signature from your respondents. Now you can close deals with your partners online, without having to arrange a meeting for this purpose only.

Signature field

Once the Signature field has been added to the form, in the left side panel you will find different customizations that you can apply to it.

Below you can find the major functionalities of the Signature field and how you can put them into use:

Signature complexity

Under Validation section, you can set the Signature complexity to extra-low, low, medium or high. Use this option in order to avoid receiving overly simplified shapes instead of signatures, such as a bare line. High complexity requires at least one letter for most cases.

Signature complexity


Once respondents have interacted with the Signature field, a Clear button will appear in the bottom right corner so they could erase the signature and try again.

Clear signature

Electronic signature and Email Templates

If you choose to receive email notifications for each submission, the Signature will be sent over as an embedded image. If you choose the plain text template, then the Signature field will be sent as a Yes/No (meaning if the form was signed or not).

Electronic signature and Submissions

In the Submissions table, the Signature appears as YES/NO (meaning the form is signed or not signed).

Submissions signature

Editing the Form Submissions

As a form owner, if you edit a submission containing a signature, the signature is cleared. We have implemented this security feature in order to protect the signatures provided by form users.

We are also compliant with the UETA and ESIGN Acts when it comes to using the Digital Signature field on your forms.

Important Note

We recommend checking with your legal counsel in order to ensure that the electronic signature will be accepted for your purposes.


    1. Hello Joe, our signature field is compliant with the UETA and ESIGN Acts. We would recommend contacting a local legal counselor to check if the signatures are indeed complying with the Canadian Requirements. Thank you and have a beautiful day!

    1. Hello Mr.Dat, our signature field is compliant with the UETA and ESIGN Acts, however, when it comes to using the electronic signature for legal purposes, we recommend that you check with a legal counsel to make sure that the signatures collected will be accepted for your purpose. Thank you!

  1. Good day,

    The signature captured in the signature field is not visible on the PDF or HTML when received. I have increased the size of the field. How can I view the signature clearly?

    1. Hi John! With custom CSS you can only change the design/visual of form elements. The signature field has a fixed size where users can sign, and even if you increase its size with CSS, you will receive only that small portion of the signature box (as it is by default, without the CSS code). The design changes, not its functionality.Please remove the CSS applied to see the full signature. Thank you!

    1. At the moment our signature field is only compatible with the ESIGN and UETA acts. I have sent a feature request to our team as a future improvement to our platform.

      Thank you!

    1. Hello!

      To use the digital signature, click on the field to lock into it. Next, click, hold and drag your mouse to add your signature. Use the Clear link on the bottom right side of the signature layout to delete the signature and start again.

      If you need further assistance, don’t hesitate to contact our Support Team at support@123formbuilder.com or via our contact form.


  2. Are there any browser compatibility issues with the digital signature? We seem to be having problems in Internet Explorer 8 and 9. The line within the box is only half way across and we can only sign above the line.

    1. Hello!

      We’ve checked on IE 8 and it works fine. Could you please send us a short video of how this happens at support@123formbuilder.com? Also, specify us your Operating System, browser and the version of the browser you are using.


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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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