Instagram specs and facts
10 facts · last verified 22 September 2026
| Fact | Current value | Verified |
|---|---|---|
| Key ranking signals source ↗ | watch time and completion, likes, shares (sends per reach), saves, relationship history | 22/09/2026 |
| Bio character limit source ↗ | 150 characters | 22/09/2026 |
| Caption character limit source ↗ | 2,200 characters | 22/09/2026 |
| Carousel slides maximum source ↗ | 20 slides | 22/09/2026 |
| Feed image aspect ratios source ↗ | 1:1, 4:5 or 3:4 (4:5 recommended for reach) | 22/09/2026 |
| Hashtags per post source ↗ | 30 maximum; 3–5 focused tags recommended | 22/09/2026 |
| UK creator monetisation options source ↗ | brand partnerships, affiliate, badges in Live, subscriptions (bonuses vary by invitation) | 22/09/2026 |
| Reel dimensions source ↗ | 9:16 vertical, 1080×1920 | 22/09/2026 |
| Maximum Reel length source ↗ | 3 minutes (up to 20 minutes for some accounts via uploads) | 22/09/2026 |
| Story video segment length source ↗ | 60 seconds per card | 22/09/2026 |
Guides that use these specs
How the Instagram algorithm works
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