One Page Checkout


One Page Checkout add-on IS NOT officially supported since 2020, January 22. You can purchase its source code. Note, the free support is not provided for the item.


The One Page Checkout add-on optimizes your checkout flow and gets your customers through the checkout process quicker by simplifying the standard multipage checkout into one page. Your customers will definitely enjoy a quick checkout process with no more unnecessary fields and questions.


  • Simplify the standard 4-step checkout into one page.
  • Minimize the time customers spend placing an order.
  • Make checkout more simple and straightforward.
  • Remove confusion and distraction.
  • Increase your conversion rates.


The add-on is compatible with CS-Cart and Multi-Vendor 4.3.x-4.9.3.

Don’t know what archive to download to install the add-on? Read here.


This add-on is developed and published by Simtech Development Ltd., a CS-Cart developer. You are guaranteed a quality add-on supported by the future versions. If you need help, please contact us via our help desk system.


Check out the One Page Checkout add-on in our demo store.


Every half an hour the demo store is reset to the default state.

Managing in the admin panel

Installing the add-on

Install the One Page Checkout add-on on the add-ons list page (Add-ons → Manage add-ons). Click the + button in the top right corner, select an archive and click Upload & install. You can now find the installed add-on in the list of installed add-ons, just make sure it is set to Active.

Setting up the add-on

Here are the settings for the add-on:

The Show all sections at checkout setting performs in the following way:

  • If enabled, all sections of the checkout will be shown upon page load at once even for an unauthorized customer. The Submit my order button will be visible.
  • If disabled, only the Account details and Address sections will be shown. The rest will appear after the customer signs in or registers.


If any of the address fields are filled in and no shipping options are available for this address, the following message will be shown:

Sorry, it seems that we have no shipping options available for your location. Please check your shipping address and contact us if everything is okay. We’ll see what we can do about it.

If all fields are empty, the following message will be shown:

Please fill in the address information to calculate shipping cost.