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Electronic signature

123 Form Builder is a free online form builder that gives you the ability to create electronic forms online of any kind and add electronic signatures to them. Now you can close deals with your partners online, without having to arrange a meeting for this purpose only.

electronic signature FormUse the electronic signature field to get an electronic equivalent of the handwritten signature from your form respondents.

To add the electronic signature field, go to your Form EditorSpecific Fields and drag the electronic signature field onto your form.

Below, you can find the major functionality of the electronic signature and how you can put them into use:

Electronic signature complexity – select the electronic signature complexity depending on the nature of your needs by editing the field and head over to Signature Complexity (Low / Average / High). This option may be used 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

Clear link – a Clear link in the form allows users to erase the electronic signature and to create another one before submitting the form.

clear signature

electronic signature & Email Templates – if you choose to receive an HTML email notification you receive the signature as an embedded image, if you choose Plain text it will be sent to you as YES/NO (meaning the form is signed or not signed).

electronic signature and Submissions – in the email submission panel the signature appears as YES/NO (meaning the form is signed or not signed).

signature column

Editing the Form Submissions – as a form owner, if you edit a submission containing a signature, the signature is cleared.

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

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


  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 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 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 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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