The ideal speed is 12–21 characters per second (CPS).
Effective subtitles follow a "gold standard" of brevity to ensure viewers can read the text without missing the action on screen. To put together a high-quality post with English subtitles, follow these technical limits and best practices: 📏 Essential Subtitle Limits Limit subtitles English
Aim for 32–42 characters . Exceeding 47 characters may cause text to go off-screen or become unreadable. Lines per subtitle: Keep it to 1–2 lines max . The ideal speed is 12–21 characters per second (CPS)
Break lines at punctuation marks or between logical phrases (like after a noun but before a verb). Limit subtitles English
Subtitles should stay on screen for at least 1 second and no more than 7 seconds . 📝 Writing & Formatting Tips