LinkedIn Ads Specs
Image sizes, aspect ratios, text limits, and file requirements for LinkedIn sponsored content, carousel ads, video ads, and document ads.
| Format |
Recommended size |
Aspect ratio |
Notes |
| Landscape |
1200 × 627 |
1.91:1 |
The standard sponsored content image |
| Square |
1200 × 1200 |
1:1 |
Takes more feed height than landscape |
| Vertical |
1080 × 1350 |
4:5 |
Mobile feed only |
JPG or PNG, 5 MB maximum file size.
Text limits
| Field |
Guideline |
| Introductory text |
~150 characters before “see more” truncation (longer is allowed) |
| Headline |
~70 characters before truncation |
| Description |
~100 characters; only shown in some placements |
Carousel ads
| Spec |
Value |
| Card size |
1080 × 1080 (1:1) |
| Cards |
2–10 per ad |
| Card headline |
~45 characters before truncation |
| File size |
10 MB per card |
Video ads
| Spec |
Value |
| Aspect ratios |
16:9, 1:1, or 9:16 |
| Recommended |
1080p source; keep mobile legibility in mind |
| Length |
Up to 30 minutes allowed |
| Format |
MP4 |
Document ads
Document ads promote a PDF (guide, report, slides) directly in the feed; viewers can read it without leaving LinkedIn, optionally behind a lead form.
| Spec |
Value |
| Format |
PDF (PPT/DOC are converted) |
| Recommended |
Vertical or square pages |
| File size |
100 MB maximum |