Name: Product Options Pro for OpenCart
Brand: Kavio Labs
SKU: KV-OC_PRODUCT_OPTIONS_PRO
Price: 45 USD
Availability: InStock

What it does

Product options for OpenCart 4.x and 3.0.x as a configurator: colour or image swatches, buttons and image tiles for select, radio and image options (OpenCart’s inputs stay underneath), the chosen value’s picture as the main product image, conditional options shown only for certain values of another option (chained, hidden values dropped and "required when shown" checked on the server), a live price that follows options and quantity with specials, the product’s quantity discounts and the tax display, a total for the chosen quantity, and quantity discounts per option value (percentage of the surcharge or a fixed amount per piece) shown next to the value and given as one order total line with taxes adjusted. Per-product editor with checks, Options Pro button on the product form. Events and an order total, no OCMOD.

Features

On the product page

Colour or image swatches, buttons and image tiles instead of plain lists
The chosen value's picture becomes the main product image
Options that appear only for certain choices, e.g. extras only for the Large size
A price that follows options and quantity, with a total for the chosen quantity
Quantity discounts shown next to the value: "10+: 15% off"

In the cart and order

Quantity discounts per option value as one clear line, taxes adjusted
Hidden options never reach the cart; "required when shown" checked on the server
The order shows the chosen options as usual

For you

One editor per product, with an Options Pro button on the product form
Images from your image folder, colours with a picker, discounts like 10:15% or 25:2.50
Checks that stop mistakes: loops, missing values, wrong images or colours
Events and an order total only, no OCMOD; OpenCart's own inputs stay underneath
One license for OpenCart 4 and 3, tested on 4.1.0.4 and 3.0.5.1
Your option lists, turned into a configurator. Product Options Pro replaces three or four single-purpose option extensions with one.

What you get

Download & installTwo installer packages (.ocmod.zip): one for OpenCart 4.0.2 – 4.1.x and one for 3.0.3 – 3.0.5. One license key covers both. Download it from My licenses right after payment.
12 months of updates & supportNew versions and help for 12 months (24 or 36 months at checkout). After that the extension keeps working; renew anytime at 50%.
License for your storeOne production domain with all its subdomains; staging and local development hosts are free. How licensing works
30-day refundFull refund within 30 days of your first purchase, no reason needed. Refund policy
Tested buildsOpenCart 4.1.0.4, 3.0.5.1. Tested on OpenCart 4.1.0.4 and OpenCart 3.0.5.1.
Documentation & supportFull guide (Installation, Configuration, Usage, FAQ) on this page. Tickets from your account, first reply within 1 business day.

Compatibility

Product Options Pro works with OpenCart 4.1.0.4, 3.0.5.1.

We list the builds we install and test on. “Tested” means the test plan ran on that build; “Supported” means the build is inside the supported range.

Compatibility
Version	Range	Runs on	Status
OpenCart 4.1.0.x	4.1.0.0 – 4.1.0.4	PHP 8.1 – 8.3	Tested on 4.1.0.4
OpenCart 4.0.2.x	4.0.2.0 – 4.0.2.3	PHP 8.0 – 8.2	Supported
OpenCart 3.0.x	3.0.3.8 – 3.0.5.x	PHP 7.4 – 8.1	Tested on 3.0.5.1

1.0.0

Nov 4, 2026

Latest

First release: colour / image swatches, buttons and image tiles for select, radio and image options (native inputs kept), option value images as the main product picture, conditional options with chained conditions and "required when shown" checked on the server (hidden values dropped on add to cart), live price on the product page with specials, product quantity discounts (OpenCart 4.1 F/P/S rules and 3.0 discount/special) and the tax display, total for the chosen quantity, quantity discounts per option value (percentage of the surcharge or fixed per piece) shown next to the value and given as the "Option quantity discount" order total with taxes adjusted, per-product editor with validation, Options Pro button on the product form, settings.

How do I install the extension?

Upload. Extensions > Installer: upload the .ocmod.zip for your OpenCart version (4.x or 3.0.x). Both packages come with every license.
Install and enable. Extensions > Extensions > Modules: install, open the settings and switch it on. Events register themselves; nothing is patched.
Enter the license key. Paste the key from My licenses. Subdomains, staging and local hosts are included; you have 14 days to do it.

The Documentation tab covers the settings and every screen.

Which OpenCart versions does it work with?

OpenCart 4.1.0.4, 3.0.5.1. Tested on OpenCart 4.1.0.4 and OpenCart 3.0.5.1. The Compatibility tab lists every version range.

Do the extensions change core files?

No. They work through OpenCart events and standard extension types (modules, order totals, themes). No core file edits, no OCMOD patches, no theme template edits, so OpenCart updates and other extensions keep working.

Do I get packages for OpenCart 4 and OpenCart 3?

Yes. Every download has a package for OpenCart 4.0.2 to 4.1.x and one for OpenCart 3.0.3 to 3.0.5, and the license key works with both. Moving from OpenCart 3 to 4 later costs nothing.

What does the license cover?

One production store domain with every subdomain (www, shop., staging.), plus local development hosts such as localhost, *.local and *.test. A store on another domain needs its own license; a second-store license is 40% off. You have 14 days after installing to enter the key. 12 months of updates and support are included; after that the extension keeps working and renewals are 50% off. How licensing works

Can I get a refund?

Yes. Ask for a full refund within 30 days of your first purchase, no reason needed: open a ticket or write to [email protected] with your order number. The money goes back to the card or bank account you paid with within 5 business days of approval. Refund policy

How do I get help?

Open a ticket from your account, so your license details are attached. We answer Monday to Friday: bug reports within 1 business day, how-to questions within 2. Support policy. Not a customer yet? Ask a pre-sales question.

7 more answers about setup and daily use in the Documentation tab.

Overview

Product Options Pro turns the plain OpenCart option lists into a product configurator: colour swatches and image tiles, the picture of the chosen value as the main image, options that appear only when another option has a certain value, a price that follows every choice and the quantity, and quantity discounts per option value that reach the cart, the checkout and the order.

Swatches, buttons and image tiles for select, radio and image options. The native OpenCart inputs stay in the form underneath, so add to cart, required checks and other extensions keep working.
Option images. Give a value its own picture (from the image folder): it becomes the main product picture while the value is chosen. Swatches show the picture or a colour you pick.
Conditional options. Show an option only when another option has one of the values you tick, e.g. "Frame colour" only for "With frame". Hidden options are not sent, and "Required when shown" is checked on the server.
Live price. The price on the product page follows options and quantity, with your tax display, specials and the product's quantity discounts (OpenCart 4.1 percentage, fixed and subtract rules included), and a "Total for 3" line.
Quantity discounts per option value. "Red: 10+ pieces, 15% off the Red surcharge" or "Large: 25+, $2.50 off each". They appear next to the value and as one discount line in the cart, checkout, order and invoice, with taxes adjusted.
One editor per product under Catalog > Product Options Pro, plus an Options Pro button on the product form.

No OCMOD, no core file edits: events and an order total. One licence covers OpenCart 4 and 3. Tested on OpenCart 4.1.0.4 and 3.0.5.1 with the default themes; other 4.0.2.x to 4.1.x and 3.0.3.8 to 3.0.5.x versions are expected to work but are not tested.

Installation

Requirements

OpenCart 4.0.2.0 to 4.1.x, or 3.0.3.8 to 3.0.5.x
PHP 7.4 or newer
Products with options (Catalog > Options, then the Option tab of a product)

Install on OpenCart 4

Go to Extensions > Installer and upload kv_product_options_pro.ocmod.zip.
Press the install button next to Product Options Pro.
Go to Extensions > Extensions, choose Modules and install Product Options Pro. The "Option quantity discount" order total is installed and switched on with it.

Install on OpenCart 3

Go to Extensions > Installer and upload kv_product_options_pro-oc3.ocmod.zip.
Go to Extensions > Modifications and press Refresh.
Go to Extensions > Extensions, choose Modules and install Product Options Pro. The "Option quantity discount" order total is installed and switched on with it.

Licence

Enter the licence key from your Kavio Labs account on the Settings tab. The extension runs as a 14-day trial without a key. Without a valid licence, product pages show the standard OpenCart options and no option discounts are given; your settings stay and the admin always works.

Uninstall

Extensions > Extensions > Modules > Product Options Pro > Uninstall removes the events, the settings, the order total and the extension's tables. Products, options and orders stay untouched.

Configuration

Catalog > Product Options Pro (or Extensions > Extensions > Modules > Product Options Pro > Edit). Tabs: Products and Settings.

Products tab

Lists the products that have options, the ones you already set up first, with a search by name or model. Edit options opens the editor of one product. The product form also has an Options Pro button next to Save.

Option editor (per product)

For every option of the product:

Field	What it does
Look on the product page	Select, radio and image options: Default (your theme), Colour / image swatches, Buttons or Image tiles. Other option types keep the theme look.
Show this option	Always shown, or only when another option (select, radio, checkbox, image) has one of the values you tick. Conditions can chain; loops are refused.
Required when shown	The option must be filled when it is visible. Set the option itself to not required in the product: OpenCart would otherwise demand it also when it is hidden. The editor warns about this.

For every value of select, radio, checkbox and image options:

Field	What it does
Image	A file from the image folder (the product's own images are suggested). It becomes the main product picture while the value is chosen and the picture of its swatch.
Colour	The swatch colour (#rrggbb) when the value has no image.
Quantity discounts	`min qty:amount`, several separated by commas. `10:15%` = from 10 pieces, 15% off this value's surcharge; `25:2.50` = from 25 pieces, 2.50 (store currency, without tax) off each piece. The highest matching quantity wins.

Settings tab

Setting	Default	What it does
Status	On	Off: standard options, no option discounts.
Live price	On	The price follows options and quantity; "Show the total for the chosen quantity" adds a line under the price.
Option images	On	The chosen value's image becomes the main picture.
Quantity discounts	On	Shows "10+: 15% off" next to the value.
Swatch size	40 px	Size of round swatches; image tiles are a little larger.
Accent colour	Blue	Frame of the chosen swatch or button.
Discount line title	Option quantity discount	Title of the order total line. Its position: Extensions > Order Totals.
Licence		Key, status and Check now.

Usage

Example: a monitor with colours, sizes and extras

In the product, the options Colour (select), Size (radio) and Extras (checkbox, not required).
In Catalog > Product Options Pro > Edit options: Colour as Colour / image swatches with a colour per value and an image for Blue; Size as Buttons; Extras Only when Size is Large with Required when shown; Red 2:50%, Large 3:5.
On the product page: four round swatches and three buttons. Choosing Blue shows the blue picture. Extras appear only after Large. The price changes with every click and with the quantity; Red shows "2+: 50% off".
Three pieces of Red / Large in the cart: the cart, checkout and order show a line "Option quantity discount -21.00" (Red: 50% of 4.00 = 2.00, Large: 5.00, times 3) and the taxes are reduced to match.

How it works

The product page keeps OpenCart's own option inputs. The swatches and buttons are placed above them and choose the same values, so the add to cart request is the normal one.
When a shopper adds to cart, the values of options that are hidden by a condition are removed on the server, and options marked Required when shown are checked there too. Errors appear under the option like OpenCart's own messages.
The live price uses the same rules as the OpenCart cart: base price, option surcharges, specials and the product's quantity discounts for the shopper's customer group, then your tax display setting.
Option quantity discounts are given by the order total "Option quantity discount": one line, taxes adjusted, also in admin order totals and invoices.

For developers

window.kvPop.update() re-reads the inputs (call it after your own script changes an option), window.kvPop.unit(qty) returns the unit price without tax.
The event kv-pop:price on document carries {unit, quantity} after every price change.
Classes: kv-pop-sw, kv-pop-sw-i, kv-pop-total, kv-pop-hidden; CSS variables --kv-pop-accent, --kv-pop-sw.

FAQ

Does it change my options or product data?

No. It stores its own settings per product in three tables. Turning it off brings the standard product page back.

Does it work with my theme?

The swatches sit above OpenCart's own option inputs and the price is found by its text, so themes that keep the standard option inputs work. Tested with the default themes of OpenCart 4.1.0.4 and 3.0.5.1. A theme that renders options in a completely different way may need a small adjustment; ask us.

Is the live price the same as in the cart?

It uses the same rules (option surcharges, specials, product quantity discounts, your tax display). In our tests the product page unit price matched the cart unit price on both versions. Option quantity discounts are shown on the product page and given as one discount line in the cart.

What about admin order editing?

The discount is an order total, so it is recalculated like any other order total. Editing orders in the admin was not run in our tests.

Why "Required when shown" instead of the product's Required tick?

OpenCart checks required options before any extension can tell that an option is hidden. Set conditional options to not required in the product and tick "Required when shown" in the editor; the server then checks them only when they are visible.

Does it do option combinations with their own stock?

No. Stock stays per option value as in OpenCart.

Does it use OCMOD?

No. Events and an order total.