Testimonials on Checkout Pages: Win Back Hesitant Buyers

A shopper who reaches checkout has already decided they want the product. What stops them now is not the product but the purchase: can I trust this store with my card, will it arrive in time, can I send it back? The right testimonial on the checkout page answers that question in one line, without pulling attention away from the button.

This guide shows how to use testimonials as checkout social proof: how to match a short testimonial to each reason buyers hesitate at checkout, where to place it on the cart, checkout and thank-you pages, which layouts fit, and what testimonials cannot fix. It is part of our page-by-page guide to where to put testimonials on your website.

Why buyers abandon carts at checkout

Most carts never become orders. Baymard Institute puts the average documented online shopping cart abandonment rate at 70.22%, an average of 50 different studies (Baymard Institute, “Cart Abandonment Rate” (opens in a new tab), updated 28 October 2026).

Baymard also asks shoppers why they abandoned during checkout. Leaving aside people who were only browsing, the most common reasons include extra costs that were too high (40%), delivery that was too slow (20%), not trusting the site with their credit card information (19%), being asked to create an account (18%), and a returns policy that was not good enough (13%).

Some of those are doubts that another customer’s words can answer. Others are problems with the checkout itself. Knowing which is which is the whole strategy.

Match one testimonial to each checkout doubt

Choose the testimonial by the doubt it answers, not by how glowing it is.

Use real reviews that say these things in the customer’s own words. Do not edit a review to add a detail it did not contain, and do not hide the critical ones elsewhere on your site to make checkout look better. Our guide to review gating explains why selective display backfires.

Fix what testimonials cannot

The two most common checkout problems are not about trust, and no quote will solve them:

• Unexpected extra costs. Show shipping, tax and fees as early as you can, ideally on the product or cart page, so the total at checkout is no surprise.
• A forced account. Offer guest checkout. Ask people to create an account after they have paid, not before.

Testimonials work best once these are fixed. They reassure a buyer who is close to yes; they do not rescue a checkout that is working against them.

Where to place testimonials in the checkout flow

1. 1Cart page. The most flexible spot on most platforms. Put a compact rating or a single quote beside the order summary, near the checkout button.
2. 2Checkout steps. If your platform allows it, add one short quote beside the order summary on the shipping or payment step, where the delivery and trust doubts peak.
3. 3Near the payment button. Only static, small proof here, such as a rating or a line like “Rated 4.8 from 1,200 reviews”, and only if those figures are real and current.
4. 4Thank-you and order status pages. Reassure the buyer they chose well, and set up the ask for their own review a few days after delivery. Our post-purchase review request playbook covers the timing.

Checkout trust signals: layouts that fit, and what to avoid

A testimonial at checkout is a trust signal, and like the padlock or the returns line it should be small and still. Checkout is the one place where less proof works better than more. Compact, static layouts fit:

• Rating Badge: a small score chip with the review count, beside the order summary or under the checkout button.
• Quote Spotlight: one pull quote chosen for the doubt that step raises.
• Review Banner: a one-line strip with a quote and a score, above the cart contents.

Avoid anything that moves, covers the form or competes with the button:

• Carousels and marquees that keep changing while people type.
• Popups and corner cards, which can cover the payment fields on a phone.
• Autoplay video, and any widget that pushes the payment button below the first screen on mobile.

If your independent score is strong, showing it can help with the trust doubt. Our guide to embedding Trustpilot reviews covers the rules for showing a Trustpilot score. For choosing a layout in general, see what a review widget is and how to choose one.

Keep checkout fast

Baymard’s list also includes the website having errors or crashing (17%). A slow or broken widget at checkout costs more than it earns. Check each one:

• It loads asynchronously, so the form and the payment button appear first.
• The page does not jump when the widget loads. Google’s guidance is to keep Cumulative Layout Shift at 0.1 or less (web.dev, “Cumulative Layout Shift” (opens in a new tab)).
• On a phone, the payment button is still visible without scrolling.
• It still works when a shopper’s connection is slow; test on a throttled connection in your browser’s developer tools.

StoryProof widgets load asynchronously from a one-line embed and have a separate mobile layout, so a quote beside the summary on desktop can collapse to a single line on phones.

Platform limits: Shopify and hosted checkouts

Not every checkout accepts custom content. On Shopify, checkout UI extensions for the information, shipping and payment steps are available only to stores on a Shopify Plus plan (Shopify developer documentation, “Checkout UI extensions” (opens in a new tab)). On other plans, put your checkout proof on the cart page and the thank-you page instead.

Our step-by-step guide to adding reviews to Shopify product pages shows how to place a widget with a Custom Liquid block. If your theme lets you add sections to the cart page, the same block works there. If you are still choosing an app, compare the best testimonial and review apps for Shopify.

Many hosted checkouts, such as those run by a payment provider, allow little or no custom content. In that case, place the proof on the last page before the hand-off: the cart, the plan selection page or the order summary.

SaaS and digital checkouts

For subscriptions, courses and software, the checkout doubts shift. Buyers worry less about delivery and more about commitment: can I cancel, will I get a refund, is it worth the price, how fast will I see a result?

• A quote about how easy it was to cancel or change plan.
• A quote about getting value in the first week.
• For courses, a student who was unsure and is glad they enrolled.

Place it beside the plan summary, not between the buyer and the payment form.

Choose and label the right reviews

Checkout testimonials need to be short, specific, recent and attributed. Two lines from a named customer about delivery beat a paragraph of general praise. Labelling reviews by the doubt they answer, such as “delivery”, “returns” or “support”, lets you build one widget per label and place each where it belongs.

Refresh them regularly. A delivery quote from last year says little about this season’s shipping times.

Measure whether it helps

1. 1Record checkout completion for a few weeks before you add anything.
2. 2Add one placement at a time, so you know which change made the difference.
3. 3If you have the traffic, A/B test the page with and without the testimonial.
4. 4Check widget views. A quote nobody scrolls to is not doing its job.

StoryProof records views and interactions for each widget, so you can see whether a checkout placement is being seen at all.

Frequently asked questions

Add your first checkout testimonial

Pick the doubt your buyers raise most, find two real reviews that answer it, and place one beside your cart summary this week. Start a 7-day free trial of StoryProof (opens in a new tab) to label reviews by doubt and build a compact widget for each, no credit card needed, or browse the widget gallery first.

Sources

• Baymard Institute. Cart Abandonment Rate (opens in a new tab). Updated 28 October 2026. Checked 2026-11-11.
• Shopify. Checkout UI extensions (opens in a new tab). Checked 2026-11-11.
• web.dev (Google). Cumulative Layout Shift (CLS) (opens in a new tab). Checked 2026-11-11.