The Complete Guide to LinkedIn Ad Sizes and Specs

Running B2B campaigns on LinkedIn requires more than just a compelling hook and sharp targeting. If your creative assets are exported at the wrong dimensions, LinkedIn’s delivery algorithm will awkwardly crop them, drop their resolution, or worse, penalize your ad delivery due to poor visual optimization.

Whether you are launching single-image sponsored updates, immersive video campaigns, or interactive carousels, getting the dimensions right from the start is non-negotiable. This comprehensive breakdown covers every essential LinkedIn ad size and format to keep your campaigns looking crisp and professional.

Quick Reference: LinkedIn Ad Dimensions at a Glance

| Ad Format | Recommended Dimensions | Aspect Ratio | Max File Size & Format |
| :— | :— | :— | :— |
| Single Image (Square) | 1200 × 1200 px | 1:1 | 5 MB (JPG, PNG, GIF) |
| Single Image (Landscape) | 1200 × 628 px | 1.91:1 | 5 MB (JPG, PNG, GIF) |
| Single Image (Vertical) | 720 × 900 px | 4:5 | 5 MB (JPG, PNG, GIF) |
| Carousel Ads | 1080 × 1080 px per card | 1:1 | 10 MB per card (JPG, PNG) |
| Video Ads (Landscape) | 1920 × 1080 px | 16:9 | 500 MB (MP4) |
| Video Ads (Square) | 1080 × 1080 px | 1:1 | 500 MB (MP4) |
| Video Ads (Vertical) | 1080 × 1350 px (or 1080 × 1920 px) | 4:5 or 9:16 | 500 MB (MP4) |
| Text Ads | 100 × 100 px (Logo) | 1:1 | 2 MB (JPG, PNG) |
| Spotlight Ads | 100 × 100 px (Logo) + 300 × 250 px (Background) | Varies | 2 MB (JPG, PNG) |

Deep Dive: Key Ad Formats and Specifications

1. Single Image Ads

Single image ads are the backbone of most LinkedIn strategies. They appear natively in the user feed and offer three primary aspect ratios.

• Square (1:1 — 1200 × 1200 px): This is the gold standard for most B2B campaigns. Square ads occupy significantly more vertical real estate on mobile viewports than landscape images, resulting in higher scroll-stop rates.
• Landscape (1.91:1 — 1200 × 628 px): Traditionally the default format, landscape works well for campaigns heavily weighted toward corporate desktop users who view LinkedIn during office hours.
• Vertical (4:5 — 720 × 900 px): Optimized specifically for mobile-heavy feed delivery, providing an immersive vertical canvas.

Design Tip: Stick to PNG files if your creative contains heavy text overlays, vector graphics, or crisp logos to prevent lossy compression artifacts. Use JPG for photographic backgrounds.

2. Video Ads

LinkedIn video ads are powerful for product demos, customer testimonials, and top-of-funnel brand awareness.

• Aspect Ratios Supported: 16:9 (Landscape), 1:1 (Square), 4:5 (Vertical), and 9:16 (Vertical).
• File Requirements: MP4 format, frame rates under 30 FPS, and file sizes ranging from 75 KB up to 500 MB.
• Duration: Anywhere from 3 seconds up to 30 minutes (though high-performing B2B videos generally capture attention within the first 15 seconds).

3. Carousel Ads

Carousels let you showcase up to 10 swipeable cards, making them ideal for step-by-step guides, feature breakdowns, or multi-product highlights.

• Card Dimensions: 1080 × 1080 pixels (1:1 ratio).
• File Limits: Up to 10 MB per card, formatted as JPG or non-animated PNG.
• Card Count: Between 2 and 10 cards per ad unit.

4. Text and Spotlight (Dynamic) Ads

Dynamic ads personalize themselves using the viewer’s profile data (such as their first name, job title, or company logo).

• Text Ads: These compact units live on the right rail of the desktop experience. They require a straightforward 100 × 100 px company logo.
• Spotlight Ads: These larger desktop units feature a 100 × 100 px logo paired with an optional 300 × 250 px custom background image.

Summary Checklist for Campaign Success

Before uploading your creative files to Campaign Manager, run through this quick checklist:

1. Resolution Check: Are your images exported at crisp high resolutions (