OpenCart 2.33.04.04.1

OpenCart extensions for 2.3, 3.0, 4.0 and 4.1

Two ready-to-install packages, each built separately for every supported OpenCart version: a One Page Checkout module and the Supreme multi-vendor marketplace theme.

One Page CheckoutSupreme ThemeDownloads →
Module

One Page Checkout

Replaces OpenCart's multi-step checkout with a single page: the customer logs in or checks out as a guest, enters addresses, picks shipping and payment, reviews the cart and places the order without a page reload.

◉What the customer sees

  • Login, guest and register on one page
  • Billing and delivery address, with address book for logged-in users
  • Live shipping and payment methods
  • Editable cart, coupon, gift voucher, reward points
  • Order comment, newsletter and terms checkbox
  • Place order stays disabled until terms are accepted

☰What the admin controls

  • General: enable, replace default checkout, heading, layout, button text
  • Account: login box, guest, registration, default customer group
  • Form fields: show / required for every field
  • Shipping and payment defaults, auto-select
  • Cart extras and a Design tab for accent colour
  • Custom CSS and JS

iGood to know

  • Standard checkout stays reachable with &classic=1 on the checkout URL
  • 4.1 has no gift-voucher box because 4.1 core removed it
  • Custom fields from Localisation are not rendered
  • Uninstall removes settings and the redirect event
One page checkout, desktopDesktop layout
One page checkout, mobileMobile layout
Theme

Supreme Theme, flat marketplace

A marketplace-style storefront theme with 10 industry presets, a mega menu builder and optional demo catalogue. "Multi-vendor" is a look and demo data: OpenCart brands act as vendor stores. Real vendor accounts and payouts need a separate marketplace module.

●10 presets

Mart generalFresh Greens grocery Stride shoesVogue fashion Hearth kitchenVolt electronics Glow beautyNest furniture Kiddo toysPeak sports

Each sets colours, fonts, header, card style and banners.

☰Settings

  • Colours, fonts, corner radius, page width
  • Sticky header, dark mode switch, header layout, top bar
  • Mega menu builder with 12-column panels
  • Product card style, footer, custom CSS/JS
  • Home page sections on / off, three editable banners

◫Demo data

Look only applies the style and leaves your catalogue alone.
Look + demo also imports 8 vendors, 6 categories and 24 products with generated images.

"Remove demo data" deletes only demo items.

Home pageHome page
Mega menuMega menu
Volt presetVolt (electronics) preset

Downloads

Pick the zip that matches your store version.

OpenCartOne Page CheckoutSupreme Theme
2.3.xonepage-checkout-oc2.3.ocmod.zipsupreme-theme-oc2.3.ocmod.zip
3.0.xonepage-checkout-oc3.0.ocmod.zipsupreme-theme-oc3.0.ocmod.zip
4.0.2.xonepage-checkout-oc4.0.ocmod.zipsupreme-theme-oc4.0.ocmod.zip
4.1.x LATESTonepage-checkout-oc4.1.ocmod.zipsupreme-theme-oc4.1.ocmod.zip

Install guide

One Page Checkout

  1. Admin > Extensions > Installer, upload the zip.
  2. Extensions > Modules > One Page Checkout > Install (green +).
  3. Click Edit, review settings, save. It replaces the default checkout.
2.3 copies files over FTP, so set up FTP under System > Settings > FTP first.

Supreme Theme

  1. Admin > Extensions > Installer, upload the zip.
  2. Extensions > Themes > Supreme Theme > Install > Edit.
  3. Choose a preset (look only, or look + demo).
  4. 2.3 / 3.0: assign it under System > Settings > Option > Theme. 4.x: turn its status on.