LinkedIn Conversation ad banner size.
300 × 250 px
6:5JPG or PNGup to 2 MB
Beside Conversation ads and Message ads in LinkedIn messaging, on desktop only. The banner is optional.
Included in Pro and up. The free plan covers the 4 main feed sizes.
Specifications
- Recommended size
- 300 × 250 pixels
- Shape (aspect ratio)
- 6:5
- Smallest accepted
- 300 × 250 pixels
- Largest file
- 2 MB
- File types
- JPG or PNG
- Where it shows
- Beside Conversation ads and Message ads in LinkedIn messaging, on desktop only. The banner is optional.
- Safe zone
- No covered areas. Keep words and logos a little in from the edges.
How long the words can be
Recommended lengths, so nothing is cut off. The AI copy writer keeps to them for you.
| Text | Up to | Good to know |
|---|---|---|
| Introductory text | 150 characters | Longer text is cut off with "…see more" on some devices. |
| Headline | 70 characters | Shown under the image. |
| Description | 100 characters | Only shown on the LinkedIn Audience Network. |
Tips
- 300 × 250 is the maximum size, and the file must be under 2 MB.
- It's small: one short line and your logo read best.
- It isn't shown on mobile, so the message itself must work without it.
Other LinkedIn sizes
Checked against the platform's own specifications on 1 October 2026: LinkedIn: Single image ads advertising specifications · LinkedIn: Carousel ads advertising specifications · LinkedIn: Message ads advertising specifications. Platforms change their specs from time to time, so check before a big launch.
Common questions
- What size is a LinkedIn Conversation ad banner?
- 300 × 250 pixels (6:5), at least 300 × 250, as JPG or PNG up to 2 MB.
- Is the LinkedIn Conversation ad banner required?
- No, it's optional. It shows beside the message on desktop only.
- How do I make my ad in this size?
- Add your image, logo and words to the AdTechKit Ad Builder. It lays your ad out for this size and every other LinkedIn and Meta size, warns you about anything hard to read or cut off, and downloads each file named and compressed to the platform's limit.