Testimonials Slider Widget

What it solves & why businesses use it

First-time visitors often hesitate because they don’t know if they can trust your brand. A testimonials carousel widget bridges that gap with authentic social proof and encourages prospective buyers to make informed purchasing decisions, solving several challenges at once:

• Lower the perceived risk for customers considering a purchase.


• Reduces a decision barrier by showing positive experiences that your product or service delivers on its promises.


• Adds authenticity and credibility to your brand without relying on hard-sell tactics.


• Reinforces brand perception and builds trust earlier in the user journey.


• Encourages new visitors to convert and returning visitors to buy again.

A testimonials widget is especially effective for businesses with longer buying cycles or higher price points, where trust plays a bigger role in the decision-making process.

When & how to use it

Use the testimonials carousel for both new and returning visitors who are comparing options, evaluating your offer, or browsing high-intent pages. Best placement:

• Home page — builds trust early for new visitors and supports brand credibility when the homepage is part of the conversion journey.


• Product pages — reinforces trust when visitors are actively evaluating what to buy.


• Pricing pages — helps justify the price by showing others found value in it..


• Landing pages from paid ads or campaigns — builds credibility for cold traffic.

Avoid placing it on blog pages or general content where buying intent is low. To get the most out of your testimonials slider, timing matters. Here are a few smart ways to trigger it when visitors are already engaged and more open to trust-building content:

• Scroll depth (30–50%) — they’ve already shown interest.


• Time delay (15–25 seconds) — gives them a moment to orient.


• Number of pages viewed — if someone browses 2-3 pages, they’re likely comparing options. That’s a perfect time to reinforce trust.


• Inactivity — if a visitor stops moving for a few minutes, a testimonials widget can gently re-engage them without being pushy.

How it looks

Testimonials sliders are designed to be clean, focused, and easy to scan. The layout is typically built-in and pre-optimized to highlight the most persuasive elements without overwhelming the visitor. An effective testimonials widget with a slider includes:

• A short quote or feedback snippet.


• Customer name and photo (if possible) for authenticity.


• Optional: a product image, star rating, location.


• The slider moves smoothly — either with auto-transition or manual navigation, so users can absorb social proof at their own pace without distraction.

Pairs well with

Testimonials carousel work even better when combined with other high-converting use cases. Pair them with a first purchase discount to build trust and offer an incentive at the same time.

How to set it up

Let’s build a testimonials widget — quick and easy, but with a polished result that gives your social proof the spotlight it deserves.

Step 1: Pick a template

Claspo has 1000+ ready-made templates designed for different purposes. Just pick one built for showcasing testimonials. The layout, font sizes, and button placement are already optimized to keep things clean and engaging. All you need to do is add your content and give it your brand’s touch.

Step 2: Customize it

A good testimonials widget should feel like it belongs on your site. Click on any element to bring up its settings on the right — adjust colors, fonts, backgrounds, and CTA button styles so everything fits your branding. For example, to change the background, click the widget and either choose a color or upload an image.

To update the reviewer photo just click the image and upload your own (PNG, JPEG, WebP, or GIF). Prefer sharp edges instead of rounded ones? You can toggle that too.

Our template includes multiple testimonials sliders. You can switch between them using the top navigation buttons. Need more slides? Click the ‘+’ to add a new one.

If you want to fine-tune the slideshow, click the widget, then select Set up slider. There, you can reorder slides, adjust the look of navigation buttons and indicators.

Also, you can change how fast the slides rotate — the default is every 5 seconds, but you can set it to whatever works best.

Want to link the widget to a product page or case study mentioned in the review? Just click the widget, go to General > Action on click > Add action > Open URL, and enter your link.

Step 3: Set up placement

Since this one’s an embedded widget, you’ll want to place it exactly where it makes sense — like under a product description, on a landing page, or in your homepage’s ‘proof’ section, etc. The editor walks you through it step by step. Just expand the ‘How to find a CSS selector’ section for guidance.

Once your spot is set, choose the display option, hit ‘Test widget’ to see it live (just for you), and when everything looks good — go ahead and publish it.