Not all subtitles are created equal. Free streaming sites often have hard-coded (burned-in) subtitles that cannot be turned off or resized. For portability, you need soft subtitles.
: You can purchase individual episodes or the full season, which allows for downloading to your device via the Prime Video app. Prime Video 2. Downloading Standalone Subtitle Files (SRT) Not all subtitles are created equal
The best way to ensure you have high-quality English subtitles and offline portability is through official streaming platforms: Not all subtitles are created equal