LinkedIn Ads ad specs

Single image ad

Sizes

Aspect ratio	Recommended	Minimum
1.91:1 landscape	1200 × 627 px	600 × 314 px
1:1 square	1080 × 1080 px	540 × 540 px
4:5 portrait	1080 × 1350 px	540 × 675 px

Images: Up to 5 MBapprox.JPG, PNG
Copy limits: Introductory text: 150 characters shown, up to 600 accepted
Headline: 70 characters shown, up to 200 accepted
Source: LinkedIn Ads spec page (opens in a new tab)

Carousel ad

Swipeable cards in the feed

Sizes

Aspect ratio	Recommended	Minimum
1:1 square	1080 × 1080 px	540 × 540 px

2–10 cards per ad.

Images: Up to 10 MB eachapprox.JPG, PNG
Copy limits: Introductory text: 150 characters shown, up to 600 accepted
Card headline: 45 charactersapprox.
Source: LinkedIn Ads spec page (opens in a new tab)

Video ad

Native video in the feed

Sizes

Aspect ratio	Recommended	Minimum
16:9 widescreen	1920 × 1080 px	960 × 540 px
1:1 square	1080 × 1080 px	540 × 540 px
9:16 full vertical	1080 × 1920 px	540 × 960 px

Video: Up to 200 MBapprox.MP4 · 3 s to 30 min long
Copy limits: Introductory text: 150 characters shown, up to 600 accepted
Headline: 70 characters shown, up to 200 accepted
Source: LinkedIn Ads spec page (opens in a new tab)

Message ad

Direct sponsored InMail

Text only — no image or video.

Copy limits: Subject: 60 characters
Message body: 1,500 characters
Source: LinkedIn Ads spec page (opens in a new tab)

Specs current as of 2026 and subject to change by the platforms — confirm against official docs before final creative export. Figures marked approx. could not be re-checked against the platform's current docs; treat them as a guide.