Why does TikTok allow 2,200 chars if only 100 show?

TikTok indexes the full caption for search and recommendation signals. Past the 100-char clamp, the additional text influences delivery without showing in-feed.

Are URLs counted differently?

X counts every URL as 23 characters via t.co. TikTok counts the literal URL length. URLs eat heavily into TikTok's visible 100-char budget.

Does X Premium change anything?

Not for Promoted Posts. As of 2026, X enforces the 280-char cap on Promoted Posts regardless of account tier.

X vs TikTok — Caption Character Limits

X and TikTok approach character limits from opposite philosophies. X enforces a hard 280-character body cap on Promoted Posts (regardless of account tier as of 2026). TikTok allows 2,200 characters of caption — eight times longer — but clips at roughly 100 visible characters before "...more" on every placement.

The convergence is interesting: both platforms effectively give you ~100 characters of attention to work with. X's hard cap is your visible budget; TikTok's soft clamp is your visible budget. The difference shows up in how to think about copy structure: X copy is one tight statement (280 chars total). TikTok copy is a hook followed by hashtags, mentions, and structured detail past the cut. Both demand front-loading the value prop.

Last verified Apr 15, 2026

Placement

Post text93/280clips at 280

Card headline11/70clips at 50

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For YouFollowing

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X: 280 hard cap. TikTok: 2,200 hard / 100 visible. Both give you ~100 chars to land the hook.

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Red dashed = covered by platform UI

Side-by-side specs

Field	Hard max	Visible before truncate	Warn at
Post text	280	280	250
Card headline	70	50	40

Source: https://business.x.com/en/help/campaign-setup/campaign-management/promoted-tweets · Last verified 2026-04-15.

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.

FAQ

Why does TikTok allow 2,200 chars if only 100 show?: TikTok indexes the full caption for search and recommendation signals. Past the 100-char clamp, the additional text influences delivery without showing in-feed.
Are URLs counted differently?: X counts every URL as 23 characters via t.co. TikTok counts the literal URL length. URLs eat heavily into TikTok's visible 100-char budget.
Does X Premium change anything?: Not for Promoted Posts. As of 2026, X enforces the 280-char cap on Promoted Posts regardless of account tier.