Every platform has its own native shape, and Brandmundo generates and previews media in the right one automatically — you never crop by hand. This is the full reference of formats and their aspect ratios.
Formats and aspect ratios
| Platform | Format | Aspect ratio | Media |
|---|---|---|---|
| Single / Carousel | 1:1 square | Image | |
| Reel / Story | 9:16 portrait | Image or video | |
| Post / Document | 4:5 tall | Image | |
| Video | 16:9 widescreen | Video | |
| Poll | — | Text only | |
| X | Image | 16:10 widescreen | Image |
| X | Text / Thread | — | Text only |
| Post | 3:2 widescreen | Image | |
| Video | 16:9 widescreen | Video | |
| Reel | 9:16 portrait | Image or video | |
| TikTok | Video | 9:16 portrait | Video |
What this means in practice
- AI image generation renders in the format's native ratio — an Instagram single comes out square, a story comes out 9:16.
- Post previews in the deck and composer frame your media exactly as the platform will, so what you approve is what your audience sees.
- Text-only formats (X posts and threads, LinkedIn polls) simply have no media slot — the words are the post.
Hashtag conventions per platform
Generated captions also follow each platform's hashtag culture: around 5–8 on Instagram, 3–5 on LinkedIn and TikTok, 2–3 on Facebook, and a sparse 1–2 on X. You can always edit the set before publishing.
These shapes follow each platform's own specifications. For the latest exact figures, see the official help centres for Instagram, Facebook, LinkedIn and TikTok.
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