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Cart & Checkout Experience

Branded 3-step checkout with progress indicator, shipping options, and trust signals

PHPCSSJSWooCommerce

Default Checkout, Zero Brand Identity

The default WooCommerce cart had no branded identity, no progress indicator, and no engraving metadata visible on line items. Standard PHP filter approaches conflicted with the Product Add-Ons plugin and Divi theme — every filter-based solution broke something else.

Must-Use Plugin via CSS/JS Injection

A must-use plugin that bypasses PHP filters entirely, using CSS and JS injection instead. Adds a branded Shop → Cart → Checkout progress bar, trust signals (Made in the USA / Ships Next Day / Satisfaction Guaranteed), a Trustindex review carousel in cart, and a saved address selector at checkout.

What It Does

  • 3-step checkout: Information → Shipping → Payment
  • Branded progress bar across all steps
  • Trust signals — Made in the USA, Ships Next Day, Satisfaction Guaranteed
  • Trustindex review carousel in cart
  • Saved address selector at checkout
  • Must-use plugin architecture — can't be accidentally deactivated
  • Consistent visual language across all checkout surfaces
  • Zero PHP filter dependencies — immune to plugin conflicts

Why JS Injection Over PHP Filters

Architecture Decision Record

Abandoned server-side PHP filter injection after repeated conflicts with the Product Add-Ons plugin and Divi theme. The JS injection approach has no filter dependencies to break — it layers on top of whatever WooCommerce renders, making it fundamentally more resilient than a traditional plugin integration. The must-use plugin pattern ensures it loads before any other plugin and can't be deactivated from the admin panel.

Results

3-Step Branded Checkout Flow
MU-Plugin Can't Be Deactivated
0 PHP Filter Dependencies