These subtitles appearance will be changed for a particular profile. So if you want to change the appearance of the subtitles for all profiles then you need to do it one by one. You can customize the font style, font size, and even add or remove the drop shadow from the text. Even if you mess up the appearance of the subtitles by any chance, there is a reset to default button which turns everything back to normal. Now, follow the step by step guide below to customize subtitles on your Netflix profile.
Steps to Customize Subtitles in Netflix
Wrapping up
This is how you can change the appearance of the subtitles on your Netflix profile. This will only change the subtitle appearance of your particular profile. If you want to change it for another profile then you need to choose it from the list and then customize it from there. Also, read: 5 Netflix Hacks For Best Streaming Experience