Good captions are more than accurate text — they need to be readable, well-positioned, and non-distracting. Here are the design principles that make caption overlays work on any stream.
Try StreamTranslate FreeUse bold or semi-bold sans-serif fonts. Avoid decorative, thin, or italic fonts — they reduce readability at streaming compression quality. 40-60px is the sweet spot for 1080p streams. StreamTranslate uses optimized default styling you can keep or customize.
White text on a moving video background is nearly unreadable. A semi-transparent dark bar (60-80% black opacity) behind caption text is the single biggest readability improvement you can make. The contrast ratio matters more than the font size.
Bottom third is standard — below your facecam area, above any platform UI elements. Leave 80-100px from the bottom edge to avoid Twitch/YouTube interface overlap. Never place captions over critical game HUD information.
Industry-standard placement keeps captions readable without obscuring critical game elements or your face.
Semi-transparent dark background (70% opacity) is the single most impactful readability improvement for caption overlays.
Large enough for mobile viewing, small enough not to dominate the visual field.
StreamTranslate's built-in caption styling implements all these principles — works great out of the box.
Use high-contrast, sans-serif fonts at 40-60px. Avoid thin weights — bold or semi-bold at minimum. StreamTranslate's default caption style is optimized for readability.
Yes. A semi-transparent dark background (60-80% opacity) dramatically improves readability over moving video content.
Bottom third is the industry standard. Avoid covering HUD elements in games and leave space from the bottom edge for platform UI elements.
Caption text should be readable on a 1080p stream on a mobile screen. 40-50px is the practical minimum for comfortable reading.
A subtle drop shadow improves readability when captions appear over bright backgrounds. StreamTranslate includes optimized caption styling out of the box.