Cart Conversion Boost

Cart Conversion Boost Pro is the same plugin with unlimited products.

Disclaimer – Cart Conversion Boost is an independent plugin and is not affiliated with or endorsed by Thrive Themes, Kit or ThriveCart.

Video Overview

Watch how Cart Conversion Boost works in under 2 minutes:

Screenshots

1. 01The plugin interface screenshot-1.jpg
2. 02Paste your CartConversionBoost URL into your ThriveThemes optin form as the “Target URL”. Make sure to tick/check the “Send form values” field.
3. 03Customer enters their name and email in the pre-sale opt-in
4. 04Your ThriveCart checkout is automatically pre-filled with their name and email already, helping conversion to sale. No repeated typing.

🚀 Key Benefits

• Improve conversion rates
• Reduced cart abandonment
• Capture the lead before the payment page
• Pre-fill ThriveCart checkout fields automatically
• Reduce friction during checkout – Faster checkout experience
• Simple setup inside WordPress admin
• Lightweight and performance-friendly
• NoCode interface

A smoother checkout experience often leads to higher completion rates and better user experience.

Why This Matters

Every extra step in a checkout process increases the chance that a customer abandons their purchase.

When customers must re-enter information they already provided, it introduces:

Friction Delay Drop-off risk

Cart Conversion Boost removes this friction by connecting your opt-in form and your ThriveCart checkout.

🔗 How It Works

1. 05A visitor completes your Thrive Themes or Kit opt-in form, which captures their name and email and sends them to your email provider
2. 06The CartConversionBoost plugin passes the name and email into the correct format for ThriveCart
3. 07The visitor is redirected to your ThriveCart product checkout page
4. 08ThriveCart checkout fields are automatically pre-filled
5. 09With Sitewide Identity Persistence on, the Buy links for your product are pre-filled for the rest of their visit too
6. 10Customer completes purchase faster

No complex setup, integrations or third-party connectors required.

• Not affiliated with or provided by Thrive Themes, Kit or ThriveCart. This is a 3rd-party bridging tool. Thrive Themes, Kit and ThriveCart are trademarks of their respective owners. Cart Conversion Boost is an independent product and is not affiliated with, endorsed by, or sponsored by Thrive Themes, Kit or ThriveCart.

First Name, Last Name and Full Name

Opt-in forms and checkouts ask for names in different ways, and Cart Conversion Boost handles each of them:

• Opt-in asks for a full name (Thrive Themes default): the full name is sent, and also split into first name (the first word) and last name (the rest). “Mary Ann Smith” becomes Mary / Ann Smith, which the buyer can edit if needed.
• Opt-in asks for a first name only (Kit default): the first name is sent. No last name is guessed – if your checkout asks for one, the buyer types it.
• Opt-in asks for first name and last name separately : both are sent exactly as entered, with no splitting, and the full name is the two joined together. In Kit, add a custom field with the key last_name. In Thrive, add a field named last_name.
• Opt-in asks for email only : just the email is sent.

On the ThriveCart side, whether your checkout shows one “full name” box or separate first and last name boxes, the right boxes are filled, because the full name, first name and last name are all sent (whenever they are known).

Key Features

• Automatically pass name and email to ThriveCart
• Works with Thrive Themes opt-in forms and Kit (ConvertKit) forms
• Handles full name, first name and last name fields
• Works with ThriveCart hosted, embedded and popup checkouts
• Lightweight and fast
• No external dependencies (just your opt-in form and ThriveCart)
• No tracking or analytics
• Simple setup
• No cookies, and nothing is stored on your server
• GDPR-friendly approach

Privacy, Cookies and Browser Storage

Cart Conversion Boost does not set any cookies, stores nothing on your server, and does not send visitor data to us or to any third party.

To pre-fill checkouts after a Kit form or another on-page opt-in form, and across pages with Sitewide Identity Persistence, the visitor’s name and email are kept in the browser’s session storage (sessionStorage). This browser session storage:

• stays in the visitor’s own browser and is never sent to us or shared with any third party
• can only be read by your own website
• is cleared when the visitor closes the browser tab or window
• is never used for tracking, analytics or advertising

One exception: when a sign-up form opens a new browser tab (Mailchimp’s standard embed code does this), session storage cannot reach the new tab. For that case only, the name and email are also kept in the browser’s local storage for up to two minutes, and deleted as soon as the new tab has picked them up (or when the two minutes are up).

In URL Mode (Sitewide Identity Persistence off), nothing is kept for Thrive Themes opt-ins (the details travel in the redirect URL), and details from a Kit form or another on-page form are removed from session storage as soon as the checkout link has used them. The Kit plugin’s Form Builder block submits through WordPress, so for that block the details are passed in the redirect URL, just like Thrive.

With the Silent opt-in, when a visitor you already know clicks your Buy button, the details they have already given are submitted to your own pop-up opt-in form for them, exactly as if they had pressed its button. The form sends them to your email provider as it normally does. The plugin never ticks a consent box or answers a captcha for a visitor: a form with either is always shown.

A note on privacy law: UK and EU rules (PECR and the ePrivacy Directive) cover any storage of information on a visitor’s device, not only cookies. They exempt storage that is strictly necessary to provide a service the visitor has asked for. Cart Conversion Boost only keeps details the visitor has just typed into your opt-in form (or that arrived in a link you sent them), and only uses them to pre-fill your forms and checkout for that visitor during their visit, so we believe this falls within the “strictly necessary” exemption. You remain responsible for your own website’s privacy policy, and we recommend mentioning this pre-fill feature there. This is not legal advice.

Use Cases

Cart Conversion Boost is useful for:

Free-plus-shipping offers Course creators Digital product sellers Membership sites Service providers Marketing funnels Lead magnet funnels

Any funnel using a Thrive Themes or Kit opt-in followed by a ThriveCart checkout can benefit.

Requirements

• WordPress
• Thrive Themes (Thrive Architect or Thrive Leads), or Kit (ConvertKit) forms on your WordPress site
• ThriveCart account (Basic or Pro)

Silent Opt-in

Use this with a 3-step funnel: squeeze page opt-in, then sales page, then checkout, where the Buy button on your sales page opens a pop-up opt-in (so that only people who click Buy join your cart-abandonment list). It works with a Thrive Architect lightbox, a Thrive Leads 2-step lightbox (ThriveBox), a Kit (ConvertKit) modal form opened by a link or button, and an Elementor Pro popup opened by a button.

When Cart Conversion Boost already knows the visitor’s name and email, the pop-up would only ask for details they have just given. So it is not shown. The pop-up form is filled in and submitted for them, Thrive Themes or Kit adds them to the list for that form and redirects as usual, and the next thing they see is the pre-filled checkout. While the checkout loads, the Buy button shows a short message (“One moment – taking you to your order…”), which you can change in the settings.

The pop-up is shown as normal (pre-filled where possible) when:

• the visitor is not known yet