100-character limit with truncation marks for search, suggested, and mobile.
YouTube technically allows 100 characters. But what users actually see depends on where the title appears:
| Surface | Visible chars |
|---|---|
| Desktop search results | ~70 |
| Mobile search results | ~55 |
| Suggested videos sidebar | ~45 |
| End screens / Mobile feed | ~40 |
| Notifications | ~30 |
Counter and preview run entirely in your browser. Nothing is uploaded.