You can use "Toolkit For IG by PlugEx" to like multiple comments added on Instagram posts displayed on post preview page on Instagram.
To do so, you must follow simple steps that are given below.
We recommend you to use this tool on post preview pages where comment like buttons are shown, however you can use this tool on any page that displays comment like buttons.
To use this tool, visit Instagram.com.
Visit any page that shows comment like buttons.
After that right click and click on “Click all comment like buttons” from context menu.
If you have followed above step, then a frame tool will be added on page that you are currently on.
After above frame tool is added on your page, you must follow these steps to click all comment like buttons:
This will start the process of clicking all comment like buttons one by one, to stop this process, click on “Close” button.