Mobile readability rule
About 70% of the idea should be clear on a small screen. One focus, high contrast, max 3–4 words of text.
- Face + object + short text often works.
- Do not repeat the full title on the thumbnail; create complementary curiosity.
AI cover + overlay text
Youtio generates AI cover images; add typography as a separate layer so text stays clear and editable per language.
FAQ
How often should I change thumbnails?
If CTR is weak in the first 24–72 hours, try a new variant. Frequent changes on winning videos can muddy the data.
Try Youtio
Generate metadata with AI, apply in Studio in one click.