Vertical for social discovery, horizontal for listing pages and email, square when one asset must serve a feed and a more formal context. Compose with margin so a single project exports to all three.
Side by side
Full-screen on a phone. The native format for Reels, TikTok, and Shorts.
The format for listing pages, email, YouTube, and any shared-screen review.
| Criterion | Vertical, 9:16 | Horizontal, 16:9 |
|---|---|---|
| Where it belongs | Instagram Reels, TikTok, YouTube Shorts | Listing page, email, YouTube, presentations |
| Viewer mindset | Scrolling, interrupted, sound off | Arrived deliberately, willing to watch |
| Workable length | 15 to 30 seconds | 45 to 90 seconds, longer for commercial |
| Shows room width | Poorly, wide rooms get cropped | Well, matches how rooms are photographed |
| Text placement | Middle 70% only, interface covers the edges | Lower third works conventionally |
| Best for | Reaching people who have not seen the listing | Converting people who already have |
Which to choose
Choose vertical, 9:16 when
- The video's job is discovery
- It will be watched on a phone in a feed
- You are building an audience over time
Choose horizontal, 16:9 when
- It embeds on a listing page or goes in an email
- The audience is a client, a seller, or a committee
- Room width and architectural context matter
Questions
Can I just post a horizontal video to Reels?
You can, and it will underperform. It appears as a small band with empty space above and below, which looks unconsidered and reduces completion, and completion is what drives distribution.
How do I make one project work in both?
Compose with margin. Keep the subject centered and away from the horizontal edges so a vertical crop does not cut it. Photographs framed tightly to the edges cannot be recropped without a full re-edit.
Is square still useful?
Yes, as a compromise for the Instagram and Facebook feed. It takes more vertical space than 16:9 without committing to full vertical, which suits an asset that has to work in a feed and in a slightly more formal context.