It is inconvenient to edit product cards in Opencart due to the addition of adding additional images of goods. Since the release of OpenCart 2.3, the creators have included the ability to upload multiple images to the server via FileManager.

But adding a few images to the product card is still not convenient.

The NetGon Product Images module MultiSelect allows you to add multiple images to a product in one click. The screencast shows how easy and convenient it can be done:
https://www.useloom.com/share/3721a24372d64250a8de8605c99bec3e

How to install:
Upload archive content to the server and update cache.

Compatible:
3.0.2.0
2.3