Loading and installing the extension

In the Opera Web browser, extensions are packaged as .nex files. You can do this by going through the following steps.

Type ‘opera:extensions’ in the address bar of an Opera browser and press Enter or the Ctrl+Shift+e keys.

Click the ‘Developer Mode’ option located on the top right to enable it. By doing this, you get the ability to inspect various parts of the extension using the browser’s developer tools. Besides, you can make changes to your extension’s code and also preview the effects by using the reload button.

You will get two options, ‘Load unpacked extension’ and ‘Pack Extension’, as shown in Figure 1.

With the ‘Load unpacked extension’ option, you can navigate to the directory where your extension files are, and select that extension folder. This loads the extension.

Figure 2: Our extension running in the browser — highlight the text, right click on it, select ‘Privacy Search..’ and any one of the sub-menu options from the context menu