If language is set as Plaintext. Then select language of the selected text from the Drop-Down menu.
Now, Feel free to tryout all the other Controls & Options
Save the Image. Profit !!
TIPS:
If you'd like to bind RayCode to a hotkey, open up your keyboard shortcut settings and bind raycode.start to a custom keybinding.
You can Use the keyboard shortcuts in the RayCode Site to export the image faster.
Tutorial
Warning:
Do Not Select the Auto Detect option in the language drop down box. It will make the website screen white and blank (only for you)
If you do select Auto Detect option by mistake, just refreshing the page won't fix it.
For this you need to clear all your website cookies and browsing data completely for the RayCode website to work normally (only if you do select Auto Detect option)