How to Build Custom Form Widgets for Your Website

Want to capture leads, collect feedback, or get customer information on your website? Whether you need contact forms, lead capture popups, surveys, or application forms, I'll show you how to create custom form widgets in minutes - no coding required.

Forms are essential for any website that wants to convert visitors into leads, customers, or subscribers. They help you collect information, qualify prospects, and maintain direct communication with your audience.

In this guide, I'll walk you through creating custom form widgets using AI, focusing on building a multi-step lead capture form with conditional logic. New to custom widgets? Start with our complete guide on how to build custom widgets first.

Why Add Custom Form Widgets to Your Website?

Form widgets transform visitors into leads and customers:

Capture Qualified Leads: Collect contact information and qualification data automatically
Match Your Brand Perfectly: Forms that look native to your site, not generic templates
Increase Conversion Rates: Multi-step forms convert up to 3x better than long single-page forms
Conditional Logic: Show or hide fields based on user responses for personalized experiences
Smart Validation: Prevent errors with real-time validation and helpful error messages
Seamless Integrations: Connect to your CRM, email platform, or database automatically

SaaS companies use lead forms for demo requests, e-commerce sites use them for customer accounts, agencies collect project briefs, and service businesses take booking inquiries. Whatever your business, custom forms help convert visitors into opportunities.

Building Your Custom Form with Embeddable AI

Creating custom forms with Embeddable's AI is remarkably simple. No form builders to configure, no validation rules to write - just describe what you want and the AI builds it.

Step 1: Start with Your Form Concept

Before you begin, think about what your form needs to accomplish:

Purpose: Contact form, lead capture, survey, application, booking?
Fields Needed: Name, email, phone, company, message, custom questions?
Complexity: Single page, multi-step, or conditional branching?
Validation: Email format, phone format, required fields, character limits?
Integration: Where does form data go - CRM, email, database, webhook?

For our example, we're building a multi-step lead capture form with conditional logic that qualifies prospects.

Step 2: Describe Your Form to the AI

Open Embeddable and describe your form in natural language. Here's the exact prompt we'll use:

Create a Multi-Step Lead Capture Form widget. 
Step 1: Collect name and email with validation.
Step 2: Ask about company name, company size (dropdown: 1-10, 11-50, 51-200, 201-1000, 1000+), and industry.
Step 3: Ask "What's your biggest challenge?" with a text area.
Step 4: If company size is 51+, ask about budget range. If under 51, skip to confirmation.
Step 5: Show a thank you message with a CTA button.
Include a progress bar, smooth transitions between steps, and error validation. Data should be submitted to a webhook and stored in CMS.

The AI understands what you want and builds a complete multi-step form widget with:

Clean, step-by-step progression
Smart field validation (email format, required fields)
Conditional logic (budget question only for larger companies)
Progress bar showing completion status
Smooth animations between steps
Professional error messages
A CMS interface to manage submissions
Webhook integration for data forwarding
Responsive design that works on all devices
Professional styling that looks polished

Custom Form Prompt Example

Step 3: Provide Your Website URL for Design Analysis

This is where Embeddable's AI shines. Give it your website URL, and the AI will:

Match your brand colors to form fields, buttons, and progress bars
Adapt fonts for labels and input text to match your typography
Style form controls (dropdowns, textareas, checkboxes) to feel native
Design error states and validation messages that fit your design system
Ensure the form integrates seamlessly with your existing pages

The result? A form that looks like it was custom-designed by your team, not a generic embedded widget.

Form Widget in Editor

Step 4: Refine Your Form

Once the AI generates your form, refine it through conversation:

"Add a phone number field with US format validation"
"Include a checkbox for newsletter opt-in at the end"
"Make the submit button say 'Get Your Free Consultation'"
"Add a file upload field for documents in step 3"
"Include GDPR consent checkbox with link to privacy policy"
"Add placeholder text examples in each field"
"Make the progress bar show step titles, not just numbers"
"Add a 'Back' button to return to previous steps"

Each refinement happens instantly. Watch your form update in real-time as you perfect every detail.

You can also use Embeddable's visual editor to make adjustments yourself - modify colors, adjust spacing, reorder fields, or tweak the layout.

Step 5: Test Your Form and Configure Integrations

Before embedding, test your form thoroughly:

Fill Out the Form: Complete the entire flow from start to finish
Test Validation: Try submitting with invalid emails, empty required fields
Check Conditional Logic: Verify fields show/hide based on answers
Test Error Messages: Ensure helpful error messages appear
Check Responsiveness: Complete the form on desktop, tablet, and mobile
Configure Integrations: Set up webhook URLs, CRM connections, or email notifications
Test Data Flow: Verify submissions reach your intended destination

The CMS editor makes it easy to view all form submissions, export data, and manage integrations without touching any code.

Embedding Your Form on Any Website

Your custom form works everywhere. Once you're satisfied, you'll get a simple embed code that works on:

WordPress: Add to any page, post, or sidebar
Shopify: Display on product pages or landing pages
Wix / Squarespace: Embed in any section or page
Custom websites: Add to any HTML page
Landing Pages: Integrate into Unbounce, Instapage, or custom landing pages
Popups: Display as exit-intent popup or timed modal

The process is the same everywhere:

Get Your Embed Code: Click "Publish" and copy the code snippet
Paste Into Your Website: Add where you want the form to appear
Publish Your Page: The form goes live immediately

Your form automatically:

Scales perfectly on all screen sizes
Loads fast with optimized rendering
Works in all major browsers
Updates instantly when you change fields or logic
Handles form submission reliably
Prevents spam with built-in protection

Types of Forms You Can Build

The same AI-powered process works for any form type:

Lead Generation Forms

Contact forms with qualification questions
Demo request forms with scheduling
Free trial signup forms
Consultation booking forms
Quote request forms

Survey & Feedback Forms

Customer satisfaction surveys (CSAT, NPS)
Product feedback forms
Post-purchase surveys
Exit interview forms
Market research questionnaires

Application Forms

Job application forms
College admission forms
Grant application forms
Membership application forms
Vendor registration forms

Registration Forms

Event registration and RSVP
Webinar signup forms
Course enrollment forms
Newsletter subscription forms
Account creation forms

Booking & Reservation Forms

Appointment scheduling forms
Restaurant reservation forms
Hotel booking forms
Service booking forms
Class registration forms

Advanced Forms

Multi-page forms with save & resume
Forms with payment integration
File upload forms with drag & drop
Forms with e-signature capture
Conditional forms with complex branching logic

Start with a Template or Build from Scratch

Not sure where to start? Embeddable offers free form widget templates you can customize:

Contact Form - Simple name, email, message form
Lead Capture Form - Multi-field form with qualification questions
Multi-Step Form - Wizard-style form with progress tracking
Survey Form - Questionnaire with rating scales and multiple choice
Booking Form - Appointment scheduling with calendar integration

Choose a template close to your needs, then customize it with AI to match your exact requirements and branding.

Why Custom Form Widgets Drive Conversions

Well-designed forms increase conversion rates and lead quality:

They Reduce Friction: Multi-step forms feel easier to complete than long single-page forms. Breaking a 10-field form into 3 steps can double completion rates.

They Qualify Leads: Conditional logic helps you collect the right information from the right people. Sales teams get better quality leads that are ready to convert.

They Build Trust: Professional forms that match your brand build confidence. Generic forms look suspicious and reduce completion rates.

They Prevent Errors: Real-time validation catches mistakes immediately. Users appreciate helpful error messages instead of frustration after clicking submit.

They Integrate Seamlessly: Data flows directly into your CRM or email platform. No manual data entry means faster follow-up and fewer lost leads.

Making Your Forms More Powerful

Take your forms to the next level with these enhancements:

Add Smart Validation

Real-time email and phone number validation
Password strength indicators
Credit card format validation
Custom validation rules for specific fields

Enable Conditional Logic

Show/hide fields based on previous answers
Skip irrelevant sections automatically
Display personalized questions based on user type

Include Progress Indicators

Show completion percentage
Display current step and total steps
Provide time estimate to complete

Add Save & Resume Functionality

Let users save progress and return later
Send reminder emails to incomplete forms
Automatically save as users fill out fields

Integrate Payments

Accept deposits or full payment in forms
Integrate with Stripe, PayPal, or Square
Display pricing based on form selections

Enable File Uploads

Allow document uploads (resumes, contracts, images)
Support drag-and-drop file selection
Validate file types and sizes

Add Smart Features

Auto-fill address from zip code
Lookup company info from domain
Pre-populate fields for returning users
Add e-signature capture for agreements

Embeddable supports integrations with major CRMs (Salesforce, HubSpot), email platforms (Mailchimp, ActiveCampaign), and thousands of apps via Zapier and Make.

Best Practices for Form Design

Follow these principles for maximum conversions:

Keep It Short

Only ask for information you actually need
Consider making optional fields truly optional
Use multi-step forms to make long forms feel shorter

Order Fields Logically

Start with easy questions (name, email)
Save sensitive questions for later (budget, pain points)
Group related fields together

Provide Clear Labels

Label every field clearly
Add helpful placeholder text as examples
Include explanatory text for complex questions

Make Buttons Obvious

Use action-oriented button text ("Get My Free Guide" vs "Submit")
Make buttons large enough to click easily
Use contrasting colors that stand out

Show Progress

Display progress bars for multi-step forms
Show which fields are required upfront
Indicate how many steps remain

Validate Intelligently

Validate as users type, not just on submit
Provide specific error messages ("Email missing @ symbol" vs "Invalid email")
Highlight errors clearly with color and icons

Optimize for Mobile

Make form fields large enough for mobile keyboards
Use appropriate input types (email, tel, number)
Minimize typing with dropdowns and checkboxes
Test on actual mobile devices

Build Trust

Add privacy policy links near submit buttons
Include security badges if collecting sensitive data
Explain how you'll use the information
Provide a clear value proposition above the form

Ready to Build Your Custom Form?

That's it! No form builders to configure, no validation logic to write, no coding required. Just describe what you want and AI builds your custom form in minutes.

Your form will:

Match your website's design perfectly
Include smart validation and conditional logic
Work on every platform and device
Integrate with your CRM and email tools
Load fast and submit reliably

Ready to get started?

Option 1: Start with a Template Browse free form widget templates and customize one to your needs.

Option 2: Build Custom with AI Head to Embeddable and describe your form - the AI will build it in minutes.

Need More Widget Ideas?

More Tutorials: