Squarespace 7.1UI Components

Form Builder

By Common Ninja

Free

Get this plugin

Form Builder – Squarespace UI Components on SquareLocator

Fit check

Great for

Surveys with branching logic

Applications and intake forms with file uploads

Registrations that need to take payment

Squarespace sites that have outgrown the native Form Block

Know before you buy

Hosted widget: submissions live in Common Ninja's dashboard, not Squarespace
Free plan covers one form; paid tiers lift submission limits and unlock advanced features
Squarespace code blocks need a Core (formerly Business) plan or higher
Squarespace's own Form Block is the lighter choice for a plain contact form
Payment collection and HIPAA mode sit in the paid tiers

Version7.1

SetupModerate

Overview

What Form Builder (Common Ninja) is

Form Builder is Common Ninja's general purpose form widget: a hosted, no-code form you assemble in their editor and embed on a Squarespace page with one line of code. The old copy here described buttons, tabs and accordions, a different product entirely. It is the advanced sibling of their Contact Form widget.

What it does

The vendor page lists text, dropdown, multi-select, checkbox, radio, date, time, number, currency, file and image upload, payment, signature and rating scale fields. Conditional logic shows or hides fields based on earlier answers, fields group into sections, and you can set a custom thank-you page or redirect. A payment field takes fees, deposits or donations inside the form. Submissions land in the Common Ninja dashboard, trigger email notifications and export to CSV.

Who it suits

Squarespace sites that need surveys with branching, applications with uploads, intake forms with conditional questions or registrations that take payment.

One honest caveat

Squarespace's Form Block already stores submissions in your site for free, so for a plain enquiry form you do not need this. Choose it for the logic, uploads and payments, and accept that your data then lives in Common Ninja's dashboard on a third party script. Payment collection and HIPAA mode sit in the paid tiers.

Setup and pricing

Build the form in Common Ninja's editor and paste the embed code into a Squarespace code block (Core, formerly Business, plan or higher). Common Ninja is recurring software: the free plan covers one form with no time limit, and paid tiers add forms, submission volume, premium skins and the advanced features noted above.

Related guide

Read my roundup of the best Squarespace plugins in 2026 or browse the plugins collection.

What it does

Text, dropdown, multi-select, date, number, currency, upload, payment, signature and rating fields
Conditional logic and section grouping for long forms
Payment field connected to a processor
Submissions dashboard, email notifications and CSV export
Spam filtering, HIPAA mode, skins and custom CSS

Full specifications

Specifications

Squarespace Version

7.1

Key Features

Text, dropdown, multi-select, date, number, currency, upload, payment, signature and rating fields
Conditional logic and section grouping for long forms
Payment field connected to a processor
Submissions dashboard, email notifications and csv export
Spam filtering, hipaa mode, skins and custom css

Best for

Surveys with branching logic
Applications and intake forms with file uploads
Registrations that need to take payment
Squarespace sites that have outgrown the native form block

Setup Difficulty

Moderate

Considerations

Hosted widget: submissions live in common ninja's dashboard, not squarespace
Free plan covers one form; paid tiers lift submission limits and unlock advanced features
Squarespace code blocks need a core (formerly business) plan or higher
Squarespace's own form block is the lighter choice for a plain contact form
Payment collection and hipaa mode sit in the paid tiers

Form Builder

Free

Get this plugin

FAQs

What does the Common Ninja Form Builder do on a Squarespace site?

It adds a hosted, no-code form with advanced field types, conditional logic, file uploads, payment collection and CSV export, embedded on your page with one line of code.

How is it different from the Common Ninja Contact Form widget?

The Contact Form is a quick drop-in for name, email, message and a file. Form Builder is the advanced version with conditional logic, signature and rating fields, section grouping, payment collection and longer multi-step forms.

How is it different from the Squarespace Form Block?

The native block is free and stores submissions in Squarespace, but has no conditional logic, uploads or payments. Form Builder adds those at the cost of a third party script and a separate dashboard.

How do I add it to Squarespace?

Build the form in Common Ninja's editor, copy the one-line embed snippet and paste it into a code block on the page. Code blocks need a Core (formerly Business) plan or higher. Later edits in the editor update the live embed automatically.

Is it free?

Common Ninja's free plan covers one form with no time limit and no credit card. Paid tiers add more forms, higher monthly submission limits, premium skins and advanced features such as payment collection, more conditional logic and HIPAA mode. Check the current tier table on the vendor site before relying on a specific feature.

Where do submissions go?

To your Common Ninja dashboard, with the field values, attached files, timestamp and source page. You can also receive email notifications and export the full set to CSV.