glossary
CTA Truncation — Definition
CTA truncation happens when a button label or sticker overlays the ad's call-to-action region. Text behind it disappears.
CTA truncation refers to the visual cutoff that happens when a platform's native call-to-action button or sticker overlays the call-to-action region of an ad creative. The composed CTA in your creative — a button label, a "Tap here" instruction, a "Swipe up" graphic — disappears behind the platform's native CTA element.
This is one of the most common ad failure modes and one of the hardest to spot during preview. The platform's CTA strip is typically 8–14% of the canvas height, sits at the very bottom, and is rendered semi-transparently. So if you've composed a CTA button into your creative at 90% Y, the platform's strip lands directly on top of it. Both are visible. Both are partially readable. Neither is fully effective.
The fix is to compose your CTA above the platform's strip — typically above 80% Y on Reels, above 78% Y on TikTok In-Feed, above 86% Y on Stories. The simulator above shows the platform's CTA strip overlay in real time, so you can verify your composed CTA isn't fighting it.
@brand
CTA truncation = the platform's own button covers your text
🎵 Original sound · brand
See the CTA strip overlay
| Field | Hard max | Visible before truncate | Warn at |
|---|---|---|---|
| Caption | 2200 | 100 | 80 |
| Display name | 40 | 40 | 30 |
Source: https://ads.tiktok.com/help/article/in-feed-ads-overview · Last verified 2026-04-15.
The double-CTA failure mode
The worst version of CTA truncation is the "double CTA" — your composed CTA and the platform's CTA both visible, both saying different things. Viewers parse it as confusion and skip. Pick one CTA, place it where the other can't compete.
FAQ
- Why don't platforms move their CTA out of the way?
- Because the platform CTA is what monetizes the placement. The platform's incentive is to keep its CTA visible at all costs.
- Can I disable the platform CTA?
- No. The CTA strip is rendered automatically on every paid placement.
- Does CTA truncation affect organic posts?
- Less aggressively, since organic posts don't have the same CTA strip. But other UI overlays (engagement icons, captions) still apply.
- How do I test for CTA truncation before launch?
- Use this simulator. The red overlay shows where the platform's CTA will appear over your creative.