Use no more than two lines on screen at once.
Limit each line to a maximum of 42 characters , including spaces. Character subtitles English
Effective character subtitles (often referred to as dialogue subtitles) must balance readability with narrative flow. This guide outlines the technical standards and creative styling used by professionals. 1. Technical Standards for Readability Use no more than two lines on screen at once
To ensure viewers can comfortably read dialogue without missing the action: Character subtitles English