How to add a reviews widget to BigCommerce

In BigCommerce use Script Manager for the whole storefront, or an HTML widget in Page Builder for one spot.

Step by step

Claim your free Fiducia page. Open the owner area, enter your domain and confirm with the link we send to an email address on that domain. Your public review page, badge and widget are free.
Copy the code. Replace yourshop.com with your domain. The badge shows your rating and links to your review page; the widget shows your latest reviews as a carousel, list or grid.
Badge (with review structured data):
```
<script src="https://fiducia.lumnika.com/widget/fiducia-badge.js" data-domain="yourshop.com" data-schema="1" async></script>
```
Reviews widget:
```
<script src="https://fiducia.lumnika.com/widget/fiducia-reviews.js" data-domain="yourshop.com" data-layout="carousel" async></script>
```
Both load asynchronously, use no cookies and are isolated from your site's CSS. Options (layout, language, theme, number of reviews): see the live demo
Paste it in BigCommerce. In the control panel go to Storefront, then Script Manager, then Create a Script. Name it Fiducia, Location on page: Footer, Select pages: All pages, Script category: Functional, Script type: Script, paste the snippet and Save. For a specific spot open Page Builder, drag the HTML widget and paste the snippet there.
Turn on review rich snippets. The Script Manager script on All pages already carries the structured data: use the badge snippet with data-schema="1" there.
Collect reviews automatically. Use Zapier, Make or n8n with the BigCommerce new order trigger and an HTTP request to the Fiducia invites API (see below).

Automatic invites from {name} orders

BigCommerce does not let a site send authenticated requests on its own, so connect it with Zapier, Make or n8n: use the new paid order trigger of your BigCommerce app and add an HTTP step that calls the invites API below. If you take payments with Stripe, the Stripe webhook in your dashboard needs no automation tool at all.

Any other tool (Zapier, Make, n8n or your own backend) can send an invite with one HTTP request to the invites API. Create the API key in your dashboard (Pro):

curl -X POST https://fiducia.lumnika.com/api/v1/invites \
  -H "Authorization: Bearer fk_your_api_key" \
  -H "Content-Type: application/json" \
  -d '{"email":"customer@example.com","name":"Maria","orderRef":"1042"}'

The response is 202 with the invite link. Sending the same orderRef again returns 409 and no second email, so retries are safe. Limit: 500 invites per 24 hours.

Questions

Will the widget slow down my BigCommerce site?

No. The script is small, loads asynchronously after your page, has no dependencies and sets no cookies. If the review service is unreachable the badge simply does not appear.

Will Google show review stars for my site?

Google does not show star snippets for reviews a business publishes about itself on its own site (self-serving reviews of LocalBusiness and Organization). The structured data is still read by other search engines and by AI assistants such as ChatGPT, Perplexity and Gemini, and your public Fiducia page is a separate site where your rating can appear.

Which BigCommerce plan do I need?

Script Manager and Page Builder are available on every BigCommerce plan; you need store owner or Script Manager permission.

Is it free?

Yes: the public page, the badge, the widget with your latest reviews and manual invites are free. Pro (€19/$19 a month, 14-day free trial) adds automatic invites (Stripe, API, plugins), bulk CSV invites, up to 50 reviews in the widget and no branding.

Your review page is waiting

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Other platforms: Wix · Squarespace · Webflow · Framer · Ghost · WordPress · WooCommerce · Shopify · HTML

Menus and plan requirements for BigCommerce checked against the official documentation on 1 October 2026: support.bigcommerce.com, support.bigcommerce.com