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LinkedIn Ads Image Size Guide 2026: All Ad Formats

By Picovert Team2026-03-245 min read

LinkedIn ads are shown to a professional audience across the feed, sidebars, and messaging — but each ad format has its own image requirements. Uploading the wrong dimensions leads to cropped creatives, rejected campaigns, or blurry thumbnails. This guide covers exact image sizes and file specs for every LinkedIn ad format in 2026.

Single Image Ad (Sponsored Content)

Single Image ads appear directly in the LinkedIn feed alongside organic posts. This is the most common LinkedIn ad format and supports three aspect ratios.

  • Landscape (recommended): 1200×628 px (1.91:1 ratio) — the standard format for most campaigns. Works well for brand awareness and lead generation
  • Square: 1080×1080 px (1:1 ratio) — performs strongly on mobile where it takes up more vertical screen space. A good default when in doubt
  • Portrait: 1080×1350 px (4:5 ratio) — maximizes screen real estate on mobile feeds
  • File format: JPG or PNG
  • Maximum file size: 5 MB
  • Text overlay: keep under 20% of the image area for best delivery and lower cost-per-click

Carousel Image Ad

Carousel ads display a swipeable row of 2–10 cards, each with its own image, headline, and destination URL. They work well for showcasing multiple products or telling a step-by-step story.

  • Card image size: 1080×1080 px (1:1 square) — required for all cards. Mixing aspect ratios between cards is not supported
  • Number of cards: minimum 2, maximum 10
  • File format: JPG or PNG
  • Maximum file size: 10 MB per card
  • Headline per card: maximum 45 characters — keep it short so it doesn't get truncated on mobile

Video Ad

Video ads auto-play in the feed with sound off by default. The thumbnail image is shown before the video loads and when the user pauses.

  • Landscape: 1920×1080 px (16:9) or 1280×720 px — recommended for desktop-first campaigns
  • Square: 1080×1080 px (1:1) — a safe choice that works across both desktop and mobile
  • Portrait: 1080×1920 px (9:16) — best for mobile-first campaigns
  • File format: MP4
  • Maximum file size: 200 MB
  • Duration: 3 seconds to 30 minutes (3–15 seconds recommended for brand awareness)
  • Thumbnail image: same dimensions as the video, JPG or PNG, max 2 MB

Spotlight Ad

Spotlight ads appear in the right-rail sidebar and are personalized using LinkedIn member profile data — name, company, and job title are pulled in dynamically.

  • Company logo: minimum 100×100 px — upload at 300×300 px for crisp display on retina screens
  • Background image: 300×250 px
  • File format: JPG or PNG
  • Maximum file size: 2 MB

Message Ad (formerly InMail)

Message ads are delivered directly to LinkedIn members' inboxes. They support an optional banner image displayed alongside the message body.

  • Banner image: 300×250 px
  • File format: JPG or PNG
  • Maximum file size: 2 MB

Document Ad

Document ads let members preview a PDF, whitepaper, or slide deck directly in the feed without leaving LinkedIn. They are strong for lead generation with a content gate.

  • Cover image: 1200×628 px (landscape) or 1080×1080 px (square)
  • Document format: PDF
  • Maximum document size: 100 MB

Company Logo in Sponsored Content

When any Sponsored Content ad runs, LinkedIn shows your company logo next to the brand name at the top of the ad unit.

  • Display size: rendered at 100×100 px in the feed
  • Recommended upload size: 300×300 px minimum for sharp display on high-DPI screens
  • File format: JPG or PNG

Image Quality Tips

  • Upload at 2× size: LinkedIn compresses images on upload. Providing a higher-resolution source reduces visible compression artifacts
  • PNG for graphics and text: use PNG for designs with logos, overlaid text, or sharp-edged illustrations. Use JPG for photographs
  • Test 1.91:1 vs 1:1: landscape works better on desktop; square often outperforms on mobile. Run both and compare CTR in Campaign Manager
  • Avoid text-heavy images: LinkedIn, like Meta, penalizes ads where text covers a large portion of the image. Keep overlays minimal

Step-by-Step: Prepare LinkedIn Ad Images

  1. Start with a high-resolution source image — at least 2400×1256 px for landscape, or 2160×2160 px for square
  2. Crop to the target ratio: 1.91:1 for landscape Single Image, 1:1 for Carousel cards. Keep the main subject centered and away from edges
  3. Resize to the exact pixel dimensions: 1200×628 px for landscape, 1080×1080 px for square. Larger files are accepted but increase upload time
  4. Compress to under 1 MB before uploading. LinkedIn re-compresses images server-side, so starting with a clean, well-compressed file produces a better final result
  5. Upload your image in LinkedIn Campaign Manager, preview across desktop and mobile, then launch

LinkedIn Ad Image Size Quick Reference

  • Single Image Ad (landscape): 1200×628 px, JPG/PNG, max 5 MB
  • Single Image Ad (square): 1080×1080 px, JPG/PNG, max 5 MB
  • Single Image Ad (portrait): 1080×1350 px, JPG/PNG, max 5 MB
  • Carousel card: 1080×1080 px, JPG/PNG, max 10 MB per card
  • Video thumbnail: same as video dimensions, JPG/PNG, max 2 MB
  • Spotlight logo: min 100×100 px (upload at 300×300 px)
  • Spotlight background: 300×250 px
  • Message Ad banner: 300×250 px, JPG/PNG, max 2 MB
  • Document Ad cover: 1200×628 px or 1080×1080 px