Narayan Prasath · 2026-01-09
LinkedIn Carousel Ads Specs and Dimensions (2026)
Complete LinkedIn Carousel Ad specs for 2026. Image dimensions, file sizes, character limits, and best practices for high-performing carousel ads.
LinkedIn Carousel Ads Specs and Dimensions (2026)
TL;DR: LinkedIn Carousel Ads use 1080x1080px square images (recommended) or 1200x627px horizontal. 2-10 cards per carousel. Max 5MB per image. 255 character headline, 70 character description per card. Introductory text: 150 characters. File formats: JPG, PNG, GIF (non-animated).
Quick Reference Table
| Spec | Requirement | Recommended |
|---|---|---|
| Image dimensions | 1080x1080px (1:1) or 1200x627px (1.91:1) | 1080x1080px square |
| Number of cards | 2-10 cards | 5-7 cards optimal |
| File format | JPG, PNG, GIF (non-animated) | PNG for quality |
| File size | Max 10MB per image | Under 5MB per image |
| Headline | Max 255 characters per card | 40-50 characters |
| Description | Max 70 characters per card | Use full 70 |
| Introductory text | Max 150 characters | 100-130 characters |
| Destination URL | Unique URL per card | Yes, use unique URLs |
| Minimum resolution | 640x640px | 1080x1080px or higher |
| Aspect ratio | 1:1 (square) or 1.91:1 (horizontal) | 1:1 for mobile |
LinkedIn Carousel Ad Image Specifications
Primary Recommendation: Square (1:1)
Dimensions: 1080 x 1080 pixels Aspect ratio: 1:1 (perfect square) Why recommended:
- Optimal for mobile (80% of LinkedIn traffic)
- Takes up more vertical screen space
- Consistent across desktop and mobile
- Better engagement rates (15-25% higher than horizontal)
Use square when:
- Target audience is primarily mobile
- Want maximum visual impact
- Showcasing products or features
- Running multi-platform campaigns (Instagram, Facebook also use square)
Alternative: Horizontal (1.91:1)
Dimensions: 1200 x 627 pixels Aspect ratio: 1.91:1 (landscape) Why use:
- Better for text-heavy content
- Fits desktop feed naturally
- Similar to standard single image ads
- Legacy campaigns already using this size
Use horizontal when:
- Content requires wider canvas (infographics, timelines)
- Desktop audience (check LinkedIn analytics)
- Matching existing brand assets
Note: LinkedIn displays horizontal carousels with letterboxing on mobile (black bars top/bottom), reducing impact.
Image Format and Quality
Supported File Formats
✅ JPG (JPEG): Smallest file size, good for photos ✅ PNG: Best quality, transparent backgrounds supported ✅ GIF: Static only (animated GIFs not allowed)
File Size Limits
- Maximum: 10MB per image
- Recommended: Under 5MB per image for fast loading
- Minimum: No official minimum, but under 100KB may appear pixelated
Optimization tips:
- Use TinyPNG or ImageOptim to compress without quality loss
- Aim for 1-3MB per image (balance quality and load speed)
- Test image quality on mobile before uploading
Image Resolution
- Minimum: 640 x 640px (square) or 640 x 335px (horizontal)
- Recommended: 1080 x 1080px or 1200 x 627px
- Maximum: No hard limit, but diminishing returns above 1920px
- DPI: 72 DPI (web standard) is sufficient
Quality checklist:
- Text legible at 1080x1080px on mobile (minimum 24pt font)
- Images sharp and clear (not blurry or pixelated)
- Colors vibrant and properly exported
- No visible compression artifacts
Number of Carousel Cards
Supported Range: 2-10 Cards
LinkedIn allows 2 to 10 cards per carousel ad.
Optimal range: 5-7 cards
Why 5-7 is optimal:
- Enough content to tell a story
- Not too long (users swipe through 70% of cards)
- Balances engagement and completion rate
Card Count by Use Case
2-3 cards: Simple comparisons
- Before/after
- Problem vs solution
- Product A vs Product B
4-5 cards: Feature showcases
- "5 Ways [Product] Saves Time"
- "4 Reasons Customers Choose Us"
6-7 cards: Educational content
- Step-by-step guides
- Multi-benefit product tours
- Customer journey stories
8-10 cards: Detailed walkthroughs
- Comprehensive product demos
- Case study narratives
- Research findings with data
Avoid 10+ cards: Engagement drops significantly after card 7. Most users don't reach the last card.
Text Specifications
Introductory Text (Above Carousel)
Character limit: 150 characters Appears: Above carousel in feed (like a LinkedIn post caption) Best practices:
- Use 100-130 characters (full limit can get cut off on mobile)
- Hook readers in first sentence
- Include benefit or curiosity gap
- Avoid emojis unless brand-appropriate
Examples:
✅ Good: "Our customers see 3x ROI in 90 days. Here's how we do it →" (67 characters, clear benefit)
❌ Bad: "Check out our latest carousel ad showcasing our product features and benefits that you'll love." (97 characters, vague, no hook)
Card Headline
Character limit: 255 characters Appears: On each card image (overlaid text) Best practices:
- Keep under 50 characters for readability
- Use headline hierarchy (larger text for main point)
- One idea per card
- Action-oriented language
Examples per card:
Card 1: "3x Faster Lead Qualification" Card 2: "Automate Follow-Ups" Card 3: "Close Deals 50% Faster"
Card Description
Character limit: 70 characters Appears: Below each card in carousel (visible when card is active) Best practices:
- Use all 70 characters
- Expand on headline
- Include specific detail or benefit
- End with subtle CTA
Example pairing:
Headline: "3x Faster Lead Qualification" Description: "AI scores leads instantly, so your team focuses on best-fit buyers." (70 characters exactly)
Destination URLs (Per Card)
Unique URLs for Each Card
LinkedIn allows different destination URLs for each carousel card.
Best practice: Use unique URLs per card
- Card 1 →
/pricing - Card 2 →
/features - Card 3 →
/case-studies - Card 4 →
/demo
Benefits:
- Track which card drives most clicks
- Send users to most relevant page per card topic
- Improve conversion rate (matched intent)
Alternative: Use same URL for all cards
- Simpler setup
- Consistent landing page experience
- Better if selling single product with one clear CTA
URL Tracking
Add UTM parameters to track card performance:
Card 1:
yoursite.com/pricing?utm_source=linkedin&utm_medium=cpc&utm_campaign=carousel&utm_content=card1
Card 2:
yoursite.com/features?utm_source=linkedin&utm_medium=cpc&utm_campaign=carousel&utm_content=card2
Check Google Analytics to see which cards drive traffic and conversions.
Design Best Practices
Visual Consistency
Maintain consistent design across cards:
- Same color palette
- Same font family
- Same layout template
- Same brand elements (logo placement)
Inconsistency confuses users and looks unprofessional.
Text Readability
Minimum font sizes:
- Headlines: 48pt+ (for 1080x1080px)
- Body text: 28-32pt
- Small text: Never below 24pt
Contrast requirements:
- Dark text on light background
- Light text on dark background
- Avoid low-contrast combos (gray on gray)
Test: View image at 400px wide (mobile size). Can you still read all text?
Safe Zone
Keep important elements away from edges:
Safe zone: 100px margin from all edges (for 1080x1080px) Why: Prevents text cut-off on different devices and LinkedIn's card rendering
Image Progression
Create visual flow between cards:
Option 1: Sequential storytelling
- Card 1: Problem
- Card 2: Agitation
- Card 3: Solution
- Card 4: How it works
- Card 5: CTA
Option 2: Connected design
- Arrows or lines connecting one card to next
- Numbered cards (1/5, 2/5, etc.)
- Color gradient across cards
- Animated motion effect (subtle position shifts between cards)
Avoid: Random, disconnected images. Users should feel compelled to swipe.
Common Carousel Ad Formats
Format 1: Feature Showcase
Structure:
- Card 1: Hero slide (product name + tagline)
- Cards 2-6: One feature per card with benefit
- Card 7: CTA (Free trial, demo, pricing)
Visual style: Product screenshot + overlaid text
Format 2: Customer Story
Structure:
- Card 1: Customer logo + "How [Company] achieved [result]"
- Card 2: The challenge
- Card 3: The solution
- Card 4: Implementation
- Card 5: Results (metrics)
- Card 6: CTA (Read full case study)
Visual style: Customer photos, charts showing results
Format 3: Listicle/Tips
Structure:
- Card 1: "5 Ways to [Achieve Goal]"
- Cards 2-6: One tip per card
- Card 7: CTA (Download full guide)
Visual style: Numbered cards, icon + text
Format 4: Before/After
Structure:
- Card 1: "See the transformation"
- Card 2: Before state
- Card 3: After state
- Card 4: How we did it
- Card 5: CTA (Get started)
Visual style: Side-by-side comparisons, visual contrast
Format 5: Process/Timeline
Structure:
- Card 1: "Our 5-step process"
- Cards 2-6: Step 1, Step 2, etc.
- Card 7: CTA (Start step 1)
Visual style: Flowchart, timeline, numbered sequence
Carousel vs Other LinkedIn Ad Formats
| Factor | Carousel | Single Image | Video | Document |
|---|---|---|---|---|
| Engagement | Medium-High (0.8-1.5%) | Medium (0.4-0.8%) | High (1-3%) | High (2-5%) |
| Creative effort | High (multiple images) | Low (one image) | Very high | Medium |
| Storytelling | Excellent | Limited | Excellent | Excellent |
| Mobile experience | Good | Good | Good | Excellent |
| Production cost | Medium | Low | High | Medium |
| Best for | Multi-feature products | Simple offers | Brand stories | Long-form content |
Use Carousel when:
- You have multiple benefits/features to showcase
- Want interactive engagement (swiping)
- Need step-by-step explanations
- Have customer stories with progression
Use Single Image when:
- Simple message (one clear CTA)
- Quick promotion or time-sensitive offer
- Limited design resources
Troubleshooting Common Issues
Issue 1: Images Appear Blurry on Mobile
Cause: Image resolution too low
Fix:
- Re-export at 1080x1080px minimum
- Use PNG instead of heavily compressed JPG
- Check image quality before uploading (zoom to 200%)
Issue 2: Text Cut Off or Unreadable
Cause: Text too close to edges or too small
Fix:
- Add 100px safe margin from all edges
- Increase font size to 48pt+ for headlines
- Test at mobile size (400px wide) before uploading
Issue 3: Carousel Won't Upload
Causes:
- File size over 10MB per image
- Wrong file format (animated GIF, TIFF, etc.)
- Less than 2 cards or more than 10 cards
- Dimension mismatch (mixing square and horizontal)
Fix:
- Compress images under 10MB
- Convert to JPG or PNG
- Ensure 2-10 cards exactly
- Use consistent dimensions for all cards
Issue 4: Low Engagement (Few Swipes)
Causes:
- First card doesn't hook attention
- No visual progression between cards
- Too many cards (8+)
- Content not interesting enough
Fix:
- Redesign card 1 with stronger hook
- Add visual connectors between cards (arrows, numbers)
- Reduce to 5-7 cards
- Test different content angles
Issue 5: High Clicks on Early Cards, None on Later Cards
Cause: Users clicking CTA before reaching all cards
Fix:
- Move CTA to last card only
- Remove destination URL from early cards (except card 1 and last card)
- Create stronger progression (users want to see what's next)
Testing and Optimization
A/B Test Variables
Test 1: Card count
- Version A: 5 cards
- Version B: 7 cards
- Measure: Completion rate, CPC
Test 2: Visual style
- Version A: Product screenshots
- Version B: Illustrated graphics
- Measure: CTR, engagement rate
Test 3: Text density
- Version A: Minimal text (5-10 words per card)
- Version B: More text (20-30 words)
- Measure: CTR, time spent
Test 4: Dimensions
- Version A: 1080x1080px square
- Version B: 1200x627px horizontal
- Measure: CTR, mobile vs desktop performance
Performance Benchmarks
| Metric | Good | Average | Poor |
|---|---|---|---|
| CTR | 1.2%+ | 0.6-1.2% | <0.6% |
| Swipe-through rate | 70%+ reach last card | 40-70% | <40% |
| Engagement rate | 2%+ | 0.8-2% | <0.8% |
| CPC | <$5 | $5-10 | >$10 |
| Card 1 → Card 2 drop-off | <20% | 20-40% | >40% |
If underperforming:
- Check creative against specs above
- Test simpler message (fewer cards)
- Improve card 1 hook
- Review all LinkedIn ad specs for other formats
Glossary
| Term | Definition |
|---|---|
| Carousel Ad | Ad format with multiple swipeable cards (2-10) in one ad |
| Card | Individual image within a carousel (each card has own headline, description, URL) |
| Swipe-through rate | Percentage of users who swipe from card 1 to last card |
| Introductory text | Text above carousel (like a post caption), max 150 characters |
| Safe zone | Area within image where important elements won't get cut off |
| Aspect ratio | Ratio of width to height (1:1 = square, 1.91:1 = horizontal) |
| Completion rate | Percentage of viewers who reach last card |
| Card-level URL | Unique destination URL for each carousel card |
Verification Checklist
Before launching Carousel Ad:
- All images are 1080x1080px (square) or 1200x627px (horizontal)
- Consistent dimensions across all cards (no mixing square and horizontal)
- 2-10 cards total (5-7 recommended)
- Each image under 10MB (ideally under 5MB)
- File format is JPG or PNG (not animated GIF)
- Text is legible at mobile size (minimum 24pt font)
- Safe zone maintained (100px margin from edges)
- Visual consistency across cards (colors, fonts, layout)
- Introductory text written (100-130 characters)
- Each card has headline (under 50 characters ideal)
- Each card has description (use all 70 characters)
- Destination URLs set (unique per card or same for all)
- UTM parameters added for tracking
- Tested image quality at 400px width (mobile preview)
- Visual progression between cards (story flows logically)
Screenshot List:
- Campaign Manager ad creation with carousel format selected (Create ad > Format options > Carousel selected)
- Carousel ad builder interface showing card slots (Carousel builder > Cards 1-7 layout)
- Image upload interface for carousel cards (Card editor > Upload image button)
- Card headline and description input fields (Card editor > Text fields with character counts)
- Destination URL field per card (Card editor > URL input with "Use unique URL per card" option)
- Carousel ad preview in desktop feed (Preview tab > Desktop view showing carousel)
- Carousel ad preview in mobile feed (Preview tab > Mobile view with swipe indicators)
- Card navigation dots in live carousel (Mobile preview > Dots showing card 2/5 active)
- Example carousel ad with 1080x1080px square images (Live example in feed)
- Example carousel ad with 1200x627px horizontal images (Live example with letterboxing on mobile)
- Carousel performance metrics showing swipe-through (Campaign Manager > Ad performance > Carousel insights)
- Card-level performance breakdown (Performance report > "Performance by card" view showing clicks per card)