Quick answer: The Micro Star widget on product pages, the Carousel on the homepage, and the Micro Combo above the checkout button are the three placements that move conversion metrics measurably. Everything else is decorative unless you have a specific plan for it.
The 12 TrustBox widgets, grouped by job
Trustpilot ships 12 official TrustBox widgets. They fall into four groups: compact badges (Micro Star, Micro Combo, Micro Review Count, Micro TrustScore), review displays (Carousel, Slider, Grid, List, Mini Carousel), single-review spotlights (Review, Quote), and page-level (Horizontal). Choosing the right widget matters less than choosing the right placement; the same Micro Star lifts conversion 12% above a checkout button and does nothing at all buried in a footer.
Three placements that measurably lift conversion
Above the checkout or add-to-cart button (Micro Combo or Micro Star). The last friction point before payment is exactly where a green Trustpilot rating with a review count removes hesitation. A/B tests across ecommerce clients show 8-17% conversion lift when the widget is placed inside the customer's active field of view at the moment of decision, not below the fold.
Product page, near price (Micro Star). Consumers evaluating a single product benefit from an at-a-glance rating from the exact retailer, not a category-level star average. Place a Micro Star showing the profile TrustScore adjacent to price, with the review count linked to the profile so shoppers can dig deeper without leaving your product context.
Homepage hero or just below the fold (Carousel). Rotating five-star reviews with reviewer name and short quote is the widget that does the most work for brand-new visitors who have never heard of you. Keep it to 4-6 reviews rotating on a 5-8 second cycle; longer intervals feel dead, shorter feel manic.
Widgets do not manufacture trust; they surface it at the moment of decision. A profile with 40 reviews and a 3.9 TrustScore should NOT install a widget until the underlying trust story is stronger.
Placements that waste widget budget
The site footer. Widgets in the footer sit below the point where 80%+ of visitors have decided to buy or leave. Analytics almost always show sub-1% widget engagement from the footer and zero measurable conversion contribution. Move it up or remove it.
The About page. Consumers visiting About are usually researching your legitimacy at a leisurely pace; they will click through to Trustpilot directly if they want a full picture. A widget here duplicates the click without adding urgency or context.
Any placement that shows fewer than 25 reviews. TrustBox widgets that display a review count normalize social proof to the count. Under 25 reviews the widget signals thinness; it hurts more than it helps. Collect first, embed second.
Installation without breaking Core Web Vitals
TrustBox widgets are loaded by a single script from widget.trustpilot.com. The script is small (~15 KB gzipped) but the widget iframes it renders can add 400-900 ms to Largest Contentful Paint if placed above the fold with default settings. Three fixes remove almost all of the impact.
Defer the script with the async attribute and load it after DOMContentLoaded rather than in the head. Widgets render 200-400 ms later but LCP is measured on your hero image and above-the-fold text, not the widget.
Reserve widget space with fixed dimensions (data-style-height and data-style-width) so the widget does not push content and cause Cumulative Layout Shift. Even a 0.05 CLS score from a widget punts you out of the good CWV band.
For pages where the widget is below the fold, use IntersectionObserver to inject the script only when the widget approaches the viewport. Homepage carousels and footer badges do not need to load during the LCP window; they need to load before the user scrolls to them.
TrustBox freshness and caching
Widget content is served from Trustpilot's CDN and cached for up to 24 hours. A new review posted at 9 AM may not appear in your widget until the next day. If a widget appears "stuck" on old reviews, wait a full 24 hours before opening a support ticket; the caching is intentional and cannot be forced from your side.
The one exception is the TrustScore number itself, which recomputes when Trustpilot ingests a new review. A widget can show an updated star average within an hour of a new review while the individual reviews on the widget still lag; this is normal and not a bug.
Widget theming without breaking Trustpilot's terms
Trustpilot allows two themes (light and dark) and a small set of text-color variants. What is not allowed: recoloring the star icon, cropping the Trustpilot wordmark, altering the widget layout, or displaying reviews outside of an official widget (for example, screenshotting a review and posting it as an image). Violations are grounds for widget access to be revoked and, in repeated cases, a profile warning.
Businesses that want more visual control should use the TrustBox variant closest to their design intent and match surrounding page typography and background color, not the widget internals. The Mini Carousel and Micro variants ship in enough neutral styling that they blend into most sites without customization.
AMP, headless, and SPA installs
AMP pages use the trustpilot-widget official component, which supports Micro Star, Micro Combo, and Micro TrustScore only. Larger widgets are not available in AMP because they exceed the AMP resource budget.
React, Vue, and other SPA frameworks should render the widget container and call window.Trustpilot.loadFromElement(ref) after mount rather than relying on the auto-scan behavior of the script. The auto-scan only runs once at page load; single-page navigations will leave the widget unrendered otherwise.
Headless commerce setups (Shopify Hydrogen, Next.js commerce) should follow the SPA pattern and additionally set a stable data-review-languages value so widgets do not flicker between locale detections during hydration.
What to do this week
Audit the three placements that matter. Is there a widget within 200 pixels of your primary checkout button? Is there a Micro Star next to price on product pages? Is your homepage carrying a Carousel above the fold? If any answer is no and your profile has 25+ reviews with a TrustScore above 4.0, install those three placements this week and measure conversion 30 days later. Move on to secondary placements only if the profile can support them.
Frequently asked
Q.Which Trustpilot widget converts best on ecommerce sites?
The Micro Combo or Micro Star widget placed within 200 pixels of the checkout or add-to-cart button. A/B tests show 8-17% conversion lift when this widget sits inside the buyer's active field of view at the decision moment, versus zero measurable lift from footer placements.
Q.Are Trustpilot widgets free to use?
The full TrustBox widget library is free for any business with a claimed Trustpilot profile. There is no premium tier required to install any of the 12 official widgets, though higher plan tiers unlock analytics on widget performance.
Q.Do Trustpilot widgets hurt page speed?
The base script is ~15 KB gzipped and does not meaningfully affect page speed if loaded asynchronously. Widget iframes can add 400-900 ms to LCP if placed above the fold without deferred loading; use async loading, reserved dimensions, and IntersectionObserver for below-fold widgets to keep Core Web Vitals green.
Q.How often do Trustpilot widgets update?
The TrustScore number updates within about an hour of a new review. Individual reviews shown on the widget are served from Trustpilot's CDN and can lag by up to 24 hours before new reviews appear. This is expected behavior and cannot be forced from the customer side.
Q.Can businesses customize the design of a TrustBox widget?
Businesses can choose between light and dark themes and a small set of text-color variants. Recoloring the star icon, cropping the wordmark, altering the widget layout, or screenshotting reviews to display outside an official widget all violate Trustpilot's Terms and can result in widget access being revoked.
Q.Do Trustpilot widgets work on AMP or headless setups?
AMP supports the trustpilot-widget component for Micro Star, Micro Combo, and Micro TrustScore only. SPA and headless frameworks should render the widget container and call window.Trustpilot.loadFromElement(ref) after mount rather than relying on the script's initial auto-scan.
