X specs and facts
6 facts · last verified 22 September 2026
| Fact | Current value | Verified |
|---|---|---|
| Key ranking signals source ↗ | replies and engagement velocity, Premium boost, media attachments, recency; external links often deprioritised | 22/09/2026 |
| Bio character limit source ↗ | 160 characters | 22/09/2026 |
| Image specifications source ↗ | 16:9 or 1:1; up to 4 images per post | 22/09/2026 |
| Post character limit source ↗ | 280 characters free; up to 25,000 for Premium subscribers | 22/09/2026 |
| Premium creator features source ↗ | longer posts, edit, revenue sharing on ads in replies, creator subscriptions | 22/09/2026 |
| Video maximum length source ↗ | 2 minutes 20 seconds free; up to ~4 hours for Premium | 22/09/2026 |
These facts are live inside the lessons too. Every lesson that cites a X spec pulls it from this sheet, so the teaching updates the moment the fact does. Start free →
