
Getting the dimensions right is crucial for a professional-looking LinkedIn carousel. Upload the wrong size, and your text becomes blurry, images get cropped, or your design looks stretched. This guide covers every specification you need to create carousels that look perfect on every device.
TL;DR: LinkedIn carousel pages should be 1080 x 1350 pixels (4:5 aspect ratio), PDF format, under 25 MB total file size, with at least 24pt font size for readability. Use RGB color mode and export at 72 DPI.
LinkedIn doesn't just accept any file size or dimension. The platform has specific requirements because:
Get the size wrong, and your carousel might look great on your computer but terrible on mobileβor worse, LinkedIn might reject it entirely.
| Specification | Requirement |
|---|---|
| Width x Height | 1080 x 1350 pixels |
| Aspect Ratio | 4:5 (portrait) |
| DPI | 72 DPI (screen resolution) |
| Color Mode | RGB (not CMYK) |
| File Format | PDF only |
This dimension is optimized for mobile viewing (the primary way people consume LinkedIn content). The 4:5 aspect ratio matches most smartphone screens, ensuring your carousel fills the screen without awkward white space or cropping.
LinkedIn specifically requires PDFs for carousels because:
Don't use: PowerPoint, Word, JPG, PNG, or any other format. LinkedIn will reject them.
| Metric | Limit |
|---|---|
| Total PDF file size | 25 MB maximum |
| Recommended size | 5-15 MB (faster upload) |
| Per-page size | No specific limit, but keep pages consistent |
Pro tip: If your PDF is over 25 MB, compress it using an online PDF compressor or export from your design tool with "optimize for web" settings.
| Element | Minimum Size | Recommended Size |
|---|---|---|
| Headlines | 36pt | 48-60pt |
| Body text | 24pt | 28-32pt |
| Small text/captions | 18pt | 20-24pt |
Best fonts for LinkedIn carousels:
Avoid:
Pro tip: Stick to 2-3 fonts maximum. Too many fonts look unprofessional.
| Mode | Use Case | For LinkedIn |
|---|---|---|
| RGB | Screen display (web, mobile, digital) | β Use this |
| CMYK | Print (brochures, business cards) | β Don't use |
Why RGB? LinkedIn displays carousels on screens, not in print. CMYK colors will look dull and washed out when converted to RGB.
Understanding how carousels compare to other formats helps you choose the right one for your content.
| Format | Dimensions | Best For | Engagement |
|---|---|---|---|
| Carousel (PDF) | 1080 x 1350 | Multi-step tips, tutorials, case studies | βββββ Highest |
| Single Image | 1200 x 627 | Quick tips, quotes, announcements | βββ Medium |
| Video | 1080 x 1920 | Demonstrations, interviews, behind-the-scenes | ββββ High |
| Article/Blog | N/A | Long-form thought leadership | βββ Medium |
| Infographic | 1080 x 1350 | Data visualization, statistics | ββββ High |
When to use carousels: If you have 3+ related tips, steps, or ideas to share, a carousel is your best bet.
1. Margins & Padding
2. Safe Area
3. Visual Hierarchy
What works:
What doesn't work:
| Mistake | Impact | Solution |
|---|---|---|
| Wrong aspect ratio (4:3 instead of 4:5) | Content gets cropped or stretched | Always use 1080 x 1350 |
| CMYK color mode | Colors look dull and washed out | Switch to RGB before exporting |
| Text too small (under 24pt) | Unreadable on mobile | Use minimum 24pt for body text |
| File over 25 MB | LinkedIn rejects the upload | Compress images and reduce file size |
| Uploading as image instead of PDF | Treated as single image, not carousel | Always export as PDF |
| Inconsistent page sizes | Pages look misaligned when swiping | Keep all pages at 1080 x 1350 |
| No margins | Text gets cut off on some devices | Leave 60px margin on all sides |
Canva
Adobe InDesign
Figma
PowerPoint
Lumeo
When exporting your carousel as PDF:
Manually setting dimensions, exporting as PDF, and checking file sizes is tedious. Lumeo handles all of this automatically.
Lumeo's sizing advantages:
Instead of spending 20 minutes getting dimensions right, Lumeo gets it right the first time.
Create Your First Carousel with Lumeo β
Q: What if my carousel is 1200 x 1500 instead of 1080 x 1350?
A: LinkedIn will accept it, but it may not display optimally on all devices. Stick to 1080 x 1350 for best results.
Q: Can I use CMYK color mode?
A: Technically yes, but your colors will look dull. Always convert to RGB before exporting.
Q: What's the smallest text size I can use?
A: 18pt is the absolute minimum, but 24pt is recommended for readability on mobile.
Q: Can I have different page sizes in the same carousel?
A: LinkedIn will accept it, but it looks unprofessional. Keep all pages at 1080 x 1350.
Q: How do I check my PDF file size?
A: Right-click the file > Properties (Windows) or Get Info (Mac). Look for "Size" or "File size."
Q: Can I upload a carousel larger than 25 MB?
A: No, LinkedIn will reject it. Compress your images or reduce the number of pages.
Q: What DPI should I use?
A: 72 DPI for screen display (LinkedIn). Don't use 300 DPI (that's for print).
Q: Can I edit the carousel after uploading?
A: No, you'd need to delete and repost. Always proofread before uploading.