Design · November 2, 2026 · 1 min read
Captions people actually read: five rules for vertical clips
Most people watch clips with the sound off. These are the rules we apply to Cliplia captions so they can be read at a glance.
On social media, a large part of the audience watches with the sound off. If a caption can't be read in half a second, the clip is lost. These are the rules we follow and how to apply them.
1. Few words per line
Two or three words per block are read in one glance. A full sentence forces people to read, and nobody stops to read in a vertical feed they scroll with their thumb.
2. Size proportional to the format
Text that looks right in 16:9 is huge in 9:16 and covers the face. Cliplia sizes captions for the clip's format, so they're always readable without eating the picture.
3. Contrast without heavy boxes
White text with a thin outline reads over almost any background. If you choose a boxed style, use a single box per line with rounded corners and some transparency, instead of stacked opaque blocks.
4. Highlight the word that matters
Highlighting the word being spoken (karaoke or word highlight) guides the eye and sets the rhythm. Use a single accent color: your brand's.
5. Stay out of the interface zones
On TikTok and Reels, the bottom is taken by the description and buttons. Place captions in the middle third or slightly below center.
All of this can be saved in a template, so every clip comes out with the same style without thinking about it.
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