What size is a LinkedIn single image ad?

The recommended single image ad creative is 1200 x 627 pixels at a 1.91:1 ratio for landscape, with a max file size of 5 MB. Square 1200 x 1200 (1:1) is also supported and often takes more feed space.

What are the LinkedIn ad text limits?

For sponsored content the intro text allows up to 600 characters (about 150 show before truncation) and the headline up to 200 characters. Keeping the headline under 70 characters avoids cut-off across placements.

What are the carousel ad requirements?

Carousel ads use 2 to 10 cards, each a 1080 x 1080 pixel square (1:1) up to 10 MB. Each card can have its own headline of up to 45 characters, so plan a short punchy line per card.

What are the video ad specs?

Video ads accept 1:1, 16:9, or 9:16 ratios, run from 3 seconds up to 30 minutes, and cap at 200 MB file size. The headline allows up to 200 characters and intro text up to 600.

Is anything uploaded?

No. This is a reference tool only — nothing you select or type is sent to a server.

LinkedIn Ad Spec Reference

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The LinkedIn Ad Spec Reference consolidates the dimensions, file limits, and copy limits for every LinkedIn ad format into one selector. Ad creatives that miss the spec get rejected in review or truncated in delivery, so checking before you build saves a rejection cycle.

How it works

Each LinkedIn ad format has a published set of constraints: recommended image or video dimensions, accepted aspect ratios, a maximum file size, and character limits for the intro text, headline, and description. The tool maps the format you select to its complete spec sheet so you can confirm every dimension and copy field at once before exporting your creative or writing your ad copy.

Notes and tips

The two most common rejection causes are over-length headlines and wrong aspect ratios. Keep headlines under about 70 characters so they survive every placement, and use 1.91:1 (1200 x 627) for landscape single-image ads or 1:1 (1200 x 1200) when you want more vertical feed real estate. For carousels, write a distinct short headline per card (up to 45 characters) rather than one long story. Video ads should front-load the message in the first few seconds because feed video auto-plays muted — always add captions.