Posted On: OpenCart 2


Custom CSS & Custom JavaScript in the default theme of OpenCart 2

February 4, 2015 - By 

Sometimes you want to make some changes for the default theme of OpenCart 2. For example you wan to change the blue color of the top menu to red. You have to edit the stylesheet.css file and add code below at the end of the file:

The change is done easily. But note that when you upgrade OpenCart. The change will be lost because the stylesheet file is overridden with new file of new version of OpenCart.

You have to change the new stylesheet.css file again. This task is very timeconsuming.

To solve it, viethemes has just create two extension Custom CSS and Custom JavaScript to add your custom CSS & custom JavaScript easier. You don’t have to edit files directly, so your code changes will not be lost when you upgrade OpenCart 2.

You can download two extension on Custom CSS and Custom JavaScript.

Hope they are useful for your store.


Extra Positions for the default theme of OpenCart 2

February 4, 2015 - By 

The default theme of OpenCart 2 has 4 built-in positions: Content Top, Content Bottom, Column Left, Column Right. It is hard for us to display products and another things like banner, slideshow, … complexly. For example if you want to display a fullwidth slideshow after the top menu, this task can not be done with the 4 positions.

To improve it, viethemes has just created a free extension Extra Positions which add more positions to the default theme:

– Header Top
– Menu
– Promotion
– Footer Top
– Footer Content Top
– Footer Content Bottom
– Footer Bottom

See it in action here:

If you like it, you can download Extra Positions on

If the above positions does not meet your need, please note that viethemes also created a premium extension Extra Positions PRO to add more positions than Extra Position.

Hope with this extension, you can set up your site layout complexly.


How to fix review problem in OpenCart 2

February 3, 2015 - By 

Recent days, I have found some people report about the problem in OpenCart 2. When user write a review in product page, but it does not show successful message.

This is the bug of OpenCart 2.


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Improve the top menu of the OpenCart default theme

February 2, 2015 - By 

The top menu of the OpenCart 2 default theme is very nice. It displays responsively in all devices.

But there are some problems which make confusing for us:

– If menu item has a sub-categories dropdown, you can not click to the menu item and go to the category page. You must click on the View All item on the dropdown.

– There is no icon to indicate that the menu item has a sub-categories dropdown

To solve these problems, viethemes has just created a new free extension Advanced Menu to improve the top menu.

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How to fix error SyntaxError Unexpected end of input OK when editing order in OpenCart 2

February 1, 2015 - By 

Recent days I have encountered many reports about the error SyntaxError: Unexpected end of input OK when editing order in OpenCart 2. The error looks like as image below:


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Explore Extension Installer & Modification System of OpenCart 2

February 1, 2015 - By 

OpenCart 2 was released with many new awesome features. Now it is the time for us to investigate inportant features of OpenCart 2 closer. In this post I will introduce about Extension Installer & Modification System.

1. Extension Installer

In OpenCart 1, when you want to install extension you have to use FTP client or CPANEL to upload files of extension to your site. This is complicated for us, right?

OpenCart 2 added the functionality Extension Installer to help us with this problem. This functionality allow us to upload extension and install it directly.

Extension Installer will accept two types of extension: Single Extension and Package Extension.

Single Extension

Single Extension is a xml file which follows the structure of OCMOD and the name of file has the extension .ocmod.xml.
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