Open Source Project

Webflow to Klaviyo Form Integration

A simple script that connects your Webflow forms to Klaviyo lists. Created for the Webflow community.

Javin Towers

Professional Installation Available

Get it set up correctly in a 30-minute live session with Javin

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$100
Webflow Form
user@example.com
Jane Smith
Attribute:data-klaviyo-form
Integration Script
Klaviyo System
Subscriber added to list
Jane Smith
Properties
{
"email": "user@example.com",
"first_name": "Jane"
}
List: NewsletterSubscribed
1Add script
2Tag form
3Done!
Simple Process

How It Works

Connect your Webflow forms to Klaviyo in three steps

1

Add the script

Copy the integration script to your Webflow site's custom code settings.

Get the script
2

Configure Klaviyo details

Add your Klaviyo API key and list ID to establish the connection.

3

Tag your forms

Add data attributes to any form you want to connect to Klaviyo.

Premium Features

Integration Features

Everything you need for a seamless Webflow to Klaviyo connection

Quick Setup

A script tag and a few form attributes are all you need to get started.

  • No custom code needed
  • Works with Webflow forms

Field Mapping

Maps form fields to Klaviyo properties with support for custom fields.

  • Standard field mapping
  • Custom field support

Multi-List Support

Connect different forms to different Klaviyo lists as needed.

  • Multiple list targeting
  • Per-form configuration

Consent Tracking

Built-in consent tracking options for compliance purposes.

  • Consent checkboxes
  • GDPR considerations

Custom Events

Track form submissions as custom events in Klaviyo.

  • Form submission tracking
  • Custom event properties

Form Validation

Basic validation for email formats and required fields.

  • Email format checks
  • Required field validation
Try Before You Implement

Interactive Playground

Experiment with different form configurations and see exactly how your data flows into Klaviyo.

  • Test forms instantly

    Try different field configurations and see immediate results

  • Validation previews

    See how email validation and required fields work in real-time

  • API payload inspection

    View the exact data structure sent to Klaviyo for each submission

Open Playground
Klaviyo List: Newsletter

Klaviyo Integration Playground

example@email.com
John
Select list...
Submit Form

API Request Preview

POST /api/klaviyo/track-submission
{
  "email": "example@email.com",
  "firstName": "John",
  "listId": "xyzABC123",
  "consent": true
}
Form Submitted Successfully!
Questions & Answers

Frequently Asked Questions

Common questions about the Webflow to Klaviyo integration

QDo I need to know how to code?

No coding is required. The integration uses data attributes on standard Webflow forms.

QWill this affect page performance?

The script is lightweight and loads asynchronously to minimize any impact on page loading.

QWhich Webflow forms are supported?

All native Webflow forms are supported, including Form Blocks and custom Form elements.

QIs this GDPR compliant?

The integration includes consent tracking options that can be configured to help with GDPR requirements.

QCan I use multiple Klaviyo lists?

Yes, different forms can connect to different Klaviyo lists based on the data attributes you set.

QHow can I get help with installation?

This script is free and open-source with documentation to guide you.

For professional installation:
to get it done right the first time.
Community Project

Free and Open Source

This project is available for free use by the Webflow community. The code is open source and available for contributions.

Use It Freely

  • No licensing fees
  • No usage restrictions
  • Open source code
Professional Service

Expert Installation

Get it done right in 30 minutes with live professional help.

  • Live 1-on-1 setup call
  • Setup completed in ~30 minutes
  • Custom field mapping assistance

Created by Javin Towers

Javin Towers
Creator

About the Creator

Javin Towers

Javin is a full-stack developer and entrepreneur with expertise in building seamless integrations between marketing platforms. He founded StackPack, a development agency that specializes in Webflow and third-party integrations.

10+ years experience building web applications and marketing automation tools

Created open-source solutions used by hundreds of Webflow developers

Expert in JavaScript, React, Next.js, and API integrations

LinkedIn

Ready to Get Started?

Connect your Webflow forms to Klaviyo with this free integration tool or get professional installation help.

Try It Yourself

Professional installation includes a 30-minute live session to get everything set up correctly.