What Are LinkedIn Sponsored Content's Character Limits for Intro Text and Headlines?

LinkedIn Sponsored Content (single image ads) technically accepts up to 3,000 characters of introductory text and 200 characters for a headline, but the feed only displays the first 150 characters of intro text and the first 70 characters of a headline before truncating — anything beyond that gets cut off or hidden, per LinkedIn's official ad specifications.

The Limits That Actually Matter for Writing Copy

LinkedIn publishes both a "visible" truncation point and a hard technical maximum for each field, and the gap between them is large:

• Introductory text — use up to 150 characters to avoid truncation; the technical maximum is 3,000 characters.
• Headline — use up to 70 characters to avoid truncation; the technical maximum is 200 characters, with no "see more" option once it's cut — unlike intro text, a truncated headline is gone for good.
• Description (the line below the headline) — use up to 100 characters to avoid truncation; the technical maximum is 300 characters.
• Ad name — an internal-only label never shown to viewers, which can run up to 255 characters.

Writing to the technical maximums means most of the copy is invisible to the audience unless they actively tap to expand it.

Why Hitting "See More" Can Cost You Money

LinkedIn doesn't distinguish between someone clicking a call-to-action button to visit the landing page and someone tapping "Read more" to expand the intro text — both can register as a paid click under click-based engagement billing. That means intro text written past the 150-character truncation point isn't just less visible, it can also generate billable clicks that never reach the actual landing page, quietly inflating cost-per-click while conversion volume stays flat.

A Smaller Detail That Affects Length Math

LinkedIn allows up to 10 emojis in the introductory text, and any URL placed in the ad copy longer than 23 characters gets automatically converted to a shortened link — both affect how much of your 150-character budget is left for the actual message once the link and any emojis are accounted for.

Carousel Ads Run Shorter Still

The single-image limits above aren't universal across every LinkedIn ad format. Carousel ads, for example, cap individual card headlines at roughly 45 characters, even tighter than the 70-character single-image headline limit, since each card has to carry its message in a smaller, side-scrolling space shared with several other cards in the same unit.

Practical Takeaway

Front-load the entire value proposition into the first 150 characters of intro text and keep the headline to 70 characters or fewer. Anything written for the extra room beyond those points should be treated as a bonus for users who choose to expand, not the message the campaign depends on.

Bottom Line

Write LinkedIn Sponsored Content copy to the 150/70/100 truncation points, not the 3,000/200/300 technical ceilings — the extra room exists, but most of the audience never sees past the shorter limits.

Source: LinkedIn Marketing Help, "Single image ads advertising specifications" (linkedin.com/help/lms/answer/a423644).