LinkedIn video ad specs
LinkedIn video ads run from 3 seconds to 30 minutes, as MP4 files between 75 KB and 500 MB. Accepted ratios run from 9:16 to 16:9, including 4:5 and 1:1, at 360 to 1920 px per side. Introductory text is 150 characters recommended (600 maximum) and the headline 70 recommended (200 maximum).
Updated
The spec sheet
| Spec | Requirement |
|---|---|
| Duration | 3 seconds to 30 minutes |
| File size | 75 KB to 500 MB |
| File type | MP4 |
| Audio | AAC or MPEG4, under 64 kHz |
| Frame rate | 30 fps recommended |
| Aspect ratios | 4:5, 9:16, 16:9, 1:1 (range 9:16 to 16:9, 5% tolerance) |
| Resolution | 360 to 1920 px per side |
| Introductory text | 150 characters recommended, 600 maximum |
| Headline | 70 characters recommended, 200 maximum |
| Thumbnail | JPG or PNG, up to 2 MB, matching the video's ratio |
Resolution by ratio
| Ratio | Minimum | Maximum |
|---|---|---|
| 4:5 vertical | 360 x 450 | 1080 x 1350 |
| 9:16 vertical | 360 x 640 | 1080 x 1920 |
| 16:9 landscape | 640 x 360 | 1920 x 1080 |
| 1:1 square | 360 x 360 | 1920 x 1920 |
Thirty minutes is allowed; thirty seconds is usually enough
A common belief is that LinkedIn caps video ads at 30 seconds. LinkedIn's own guide says 3 seconds to 30 minutes. The short ads you see in the feed are a creative choice, not a platform rule.
It is a sensible choice. The LinkedIn feed is read between meetings, often muted, and the person scrolling is not looking for an ad. A cut that makes one argument in the first few seconds, with captions burned in, usually does more work than a long one. Longer formats earn their place for webinars, demos and thought leadership aimed at people already interested.
Ratio choice on a B2B feed
Vertical and square formats take more feed height than horizontal, which matters on mobile. Horizontal still reads well on desktop, where a large share of LinkedIn browsing happens during the working day. If you can only make one, 1:1 or 4:5 is the safer compromise.
Questions
- How long can a LinkedIn video ad be?
- LinkedIn's ads guide allows 3 seconds to 30 minutes.
- What is the LinkedIn video ad file size limit?
- 75 KB minimum and 500 MB maximum, MP4 only.
- What aspect ratios does LinkedIn accept for video ads?
- Anything from 9:16 to 16:9 within a 5% tolerance, including 4:5 and 1:1.
Sources
Read on 13 October 2026. Platforms change specs and policies without notice; check the source before you build to a number.