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X Vertical Video vs YouTube Shorts
Both are 9:16 vertical with right-rail engagement icons. X clips post text at ~100 chars; YouTube clips description at ~60 chars. YT Shorts is tighter.
X Vertical Video Ads and YouTube Shorts Ads use nearly identical UI vocabulary — full-bleed 9:16 video, right-rail engagement column, bottom-left username block, sponsored CTA strip — but with different visible caption windows.
X Vertical Video clips post text at roughly 100 visible characters. YouTube Shorts clips description at roughly 60. The difference traces to the right-rail icon count: X has four icons (reply, repost, like, bookmark), YouTube has six (like, dislike, comment, share, remix, subscribe), so YouTube's UI claims more pixels for itself and leaves less for the caption.
Plan to YouTube's tighter clamp when running cross-platform vertical video creative. A 60-character hook works on both; a 100-character X-optimized hook will get clipped on Shorts.
@brand · Ad
X vertical: 100 visible chars. YouTube Shorts: 60 visible. Same canvas, different clamps.
Side-by-side specs
| Field | Hard max | Visible before truncate | Warn at |
|---|---|---|---|
| Post text | 280 | 100 | 80 |
| Display name | 50 | 30 | 25 |
Source: https://business.x.com/en/help/campaign-setup/campaign-management/vertical-video-ads · Last verified 2026-04-15.
| Field | Hard max | Visible before truncate | Warn at |
|---|---|---|---|
| Description | 120 | 60 | 50 |
| Channel / display name | 50 | 30 | 25 |
Source: https://support.google.com/google-ads/answer/12362050 · Last verified 2026-04-15.
FAQ
- Are the safe zones identical between X Vertical and YouTube Shorts?
- Nearly — both use the same right-rail footprint (14% × 54% from 28% Y to 82% Y) and bottom-left username block. The bottom CTA strip is similar.
- Which platform has higher completion rate?
- YouTube Shorts typically pulls 8-15% higher completion rate than X Vertical on identical creative, mostly due to YouTube's broader logged-in viewing context.
- Should creative be identical?
- The video can be identical but caption strategy must differ. Plan separate captions for each platform's visible clamp.