eCommerce Shopify App
Sticky Cart &
GDPR Consent
The Problem It Solves
Cart Abandonment
The average ecommerce cart abandonment rate sits above 70%. A significant portion of that is simple friction — a customer who has items they intend to buy loses momentum during browsing and never completes the purchase.
A persistent cart that stays visible as someone browses is one of the most evidence-backed conversion interventions in ecommerce. It doesn't need to be aggressive. It just needs to be there.
The Compliance Gap
Most sticky cart plugins ignore GDPR and cookie consent entirely — firing analytics events and session recordings before a visitor has agreed to anything. For merchants in regulated industries, or those serving EU and UK customers, that's a liability.
This app was built to handle compliance correctly from the ground up — not patched in as an afterthought. The cookie banner and cart share the same footer zone by design, ensuring consent is obtained before any tracking fires.
Microsoft Clarity's October 2025 GDPR enforcement requires explicit consent before session recordings can start. This app handles that correctly out of the box.
The Average Order Value Problem
Free shipping thresholds are one of the most effective AOV levers in ecommerce — but only if the customer can see how close they are. A threshold buried in a policy page does nothing. A real-time progress bar in a persistent footer does considerably more.
One Footer Zone, Two Jobs
The cookie consent banner and the sticky cart occupy the same fixed footer position intentionally. The banner appears first on a new visit — obtaining compliance before anything else. Once the visitor interacts, it dismisses and the sticky cart takes its place. No jarring layout shift, no competing elements, no double stack.
First Visit
Cookie consent banner appears at the bottom of the page. No analytics events fire. No Clarity session recording starts. The cart is loaded in the background but stays hidden.
Interaction
Visitor accepts or declines. Consent is stored as a first-party cookie for 365 days. If accepted, Microsoft Clarity's consent API is called, enabling session recordings. GTM events unlock.
window.clarity('consent') Called only after explicit acceptance — never before.
Cart Takes Over
Banner slides out, sticky cart slides in — same zone, same transition. On returning visits with consent already stored, the cookie banner is skipped entirely and the cart is ready immediately.
What's Inside
Every feature was built to a specific performance, compliance, or conversion requirement. Nothing is decorative.
Free Shipping Progress Bar
Real-time ARIA-accessible progress bar shows exactly how much more a customer needs to spend to unlock free shipping. Updates instantly as cart changes. Transitions to a "Free Shipping Unlocked" confirmation badge when the threshold is hit.
GDPR-Correct Analytics Gating
All GTM dataLayer events and Microsoft Clarity session recordings are blocked until the visitor explicitly accepts. For returning visitors with stored consent, Clarity's API is signaled on page load. Decline stores a cookie for 365 days so the banner doesn't reappear.
Mobile-First Compact Layout
On mobile, the cart collapses to a single compact bar showing only the Checkout button — minimum height, maximum thumb-friendliness. All touch targets meet the 44x44px minimum.
Zero Performance Impact
Under 3KB total — CSS, JavaScript, and HTML combined. Loads asynchronously after DOM content. Scroll events use requestAnimationFrame to prevent jank. Cart fetches are debounced at 500ms. No external libraries, fonts, or image assets.
Smart Cart Sync
MutationObserver watches the header cart count element and triggers a background fetch when it changes — keeping the sticky cart in sync with any add-to-cart interaction, AJAX cart update, or third-party app event.
Auto-Minimizes to Floating Tab
After 3 seconds of inactivity, the full cart bar minimizes to a small floating cart icon in the corner — keeping cart access available without occupying the full viewport bottom. Cart count badge updates in real-time in minimized state.
Built by a Shopify Partner
The Sticky Cart Footer is one component of a broader Shopify ecosystem built as a certified Shopify Partner. The app was developed alongside our proprietary compliant ecommerce theme — built specifically for regulated industry merchants who need both conversion performance and compliance rigor in the same package.
Sticky Cart Footer
Available on the Shopify App Store. Free plan for up to 1,000 orders/month. Pro plan at $9.99/month removes branding, adds analytics, and unlocks unlimited orders. 7-day free trial, no credit card required.
apps.shopify.com/sticky-cart-footerConvertGuard™ Ecommerce Compliance System
Our proprietary Shopify theme built for regulated industries — YMYL verticals, healthcare, financial products. ADA compliant from architecture, Amazon-model UI patterns, E-E-A-T structure, fraud rule framework.
Enquire About the Theme ↗Full-Service Shopify Development
From platform migrations — Square to Shopify, custom image script development for catalogs of any size — to theme customization, compliance audits, and ongoing store optimization.
Shopify Services ↗Add it to your
Shopify store today.
Free plan available. 7-day Pro trial, no card required. Or talk to us about our full compliant ecommerce theme and Shopify Partner services for regulated industries.