The reason for removing this plugin was because of sponsored advertising. But after the Notepad++ version 7.5, the Plugin Manager plugin was removed from the official distributors. Plugin Manager is a plugin itself through which you can install, update and remove any available plugins in Notepad++. How Hex editor looks like Step 1: Adding Plugin Manager from Github

There are many Hex Editor Software out there but you can use this in Notepad++ too by using the plugin for it.

This can be also used for editing the game saved state file and changing the changeable feature in the game. Sometimes user comes across a file that can’t be opened for a reason but you can open the file in Hex Editor and most of the files will have information on top of the file, describing what kind of file it is. A Hex Editor is a program which lets you analyze, view and edit the hexadecimal coded files. The name ‘Hex’ comes from hexadecimal which is a numerical format for representing binary data. How to install Hex-Editor on Notepad++ What is the Hex Editor? One of the many plugins is Hex Editor Plugin used for viewing the text in Hex format. But there are plugins for different kind of formats of text and programming languages which you install for your Notepad++. However, there are few text files which users are unable to open using Notepad++. The project’s name comes from the C increment operator. It supports several languages and tabbed editing, which allows working with multiple open files in a single window. Notepad++ is a free text editor and source code editor for use with Microsoft Windows.

How to use notepad++ on text files