LinkedIn Ad Specs 2026: Image, Video, Carousel, Document and Message Ads
Short answer: LinkedIn single image ads are 1200×628 (1.91:1), 1200×1200 (1:1) or 720×900 (4:5), up to 5 MB. Video ads are MP4 between 75 KB and 500 MB, 3 seconds to 30 minutes long (15 to 30 seconds recommended), in 16:9, 1:1, 4:5 or 9:16. Carousels take 2 to 10 cards at 1080×1080, document ads up to 100 MB and 300 pages. For feed ads, keep intro text to 150 characters and headlines to 70 to avoid truncation. LinkedIn publishes no safe zone for vertical video; measured in the app, keep about 192 px top, 346 px bottom and 65 px on each side of a 1080×1920 frame clear.
Check a LinkedIn video before upload
The Safe Zone Checker draws the LinkedIn mobile interface, as measured in the app, over your own vertical video, and the Aspect Ratio Calculator gives the exact size for each LinkedIn ratio. Both run in your browser with nothing uploaded.
LinkedIn ad specs at a glance
| Format | Size or ratio | File | Text |
|---|---|---|---|
| Single image | 1200×628 (1.91:1), 1200×1200 (1:1), 720×900 (4:5) | JPG, PNG or GIF, up to 5 MB | Intro 150 recommended, 3,000 max; headline 70, 200 max; description 100, 300 max |
| Video | 16:9, 1:1, 4:5, 9:16 | MP4, 75 KB to 500 MB, 3 seconds to 30 minutes | Intro 150, 3,000 max; headline 70, 200 max |
| Carousel | 2 to 10 cards, 1080×1080 (1:1) recommended | JPG, PNG or non animated GIF, up to 10 MB per card | Intro 150, 255 max; card headline 45 characters |
| Document | Up to 300 pages | PDF, DOC, DOCX, PPT or PPTX, up to 100 MB | Intro 150, 3,000 max; headline 70, 200 max |
| Conversation | Optional banner up to 300×250 | JPG or PNG banner, up to 2 MB | Subject 60; messages 8,000; buttons 25 characters, 5 per message |
| Message | Optional banner up to 300×250, desktop only | JPG, GIF or PNG banner, up to 2 MB | Subject 60; body 1,500; button 20 characters |
| Text | Image 100×100 | JPG or PNG, up to 2 MB | Headline 25; description 75 |
Single image ads
- Horizontal 1.91:1: 1200×628 px recommended, from 640×360 up to 7680×4320.
- Square 1:1: 1200×1200 px recommended, from 360×360 up to 4320×4320.
- Vertical 4:5: 720×900 px recommended.
- File: JPG, PNG or GIF, up to 5 MB. Animated GIFs must be 250 frames or shorter.
- Text: intro text up to 150 characters to avoid truncation (3,000 maximum), headline up to 70 (200 maximum), description up to 100 (300 maximum). The destination URL can be up to 2,000 characters and must start with http:// or https://.
Video ads
| Ratio | Recommended | Minimum | Maximum |
|---|---|---|---|
| 16:9 landscape | 1920 × 1080 px | 640 × 360 px | 1920 × 1080 px |
| 1:1 square | n/a | 360 × 360 px | 1920 × 1920 px |
| 4:5 vertical | 720 × 900 px | 360 × 450 px | 1080 × 1350 px |
| 9:16 vertical | 720 × 1280 px | 360 × 640 px | 1080 × 1920 px |
- File: MP4, between 75 KB and 500 MB.
- Length: 3 seconds to 30 minutes. LinkedIn recommends 15 to 30 seconds for the widest set of placements; in stream video ads can be up to 90 seconds.
- Frame rate: less than 30 fps.
- Audio: AAC or MPEG4, less than 64 kHz.
- Captions: an SRT file, text only.
- Thumbnail: JPG or PNG up to 2 MB, in the same ratio and resolution as the video.
- Text: intro text 150 characters (3,000 maximum), headline 70 (200 maximum), ad name up to 255.
Note that the 9:16 maximum is 1080×1920, so a 4K vertical master has to be scaled down before upload. Upload captions as an SRT file rather than relying on burned in text alone: they stay legible when the player is small.
Carousel ads
- 2 to 10 cards, each an image. Carousels do not accept video.
- JPG, PNG or non animated GIF, up to 10 MB per card, 1080×1080 px at 1:1 recommended.
- Intro text up to 150 characters to avoid truncation (255 maximum).
- Card headlines are cut after two lines, with a limit of 45 characters for cards that go to a destination URL or open a Lead Gen Form.
Document ads
- PPT, PPTX, DOC, DOCX or PDF. With the lead generation objective, only PDF is supported.
- Up to 100 MB, 300 pages and 1 million words.
- Intro text up to 150 characters (3,000 maximum), headline up to 70 (200 maximum).
Documents are rendered page by page in the feed, so design each page for a phone first: large type, one idea per page, and the brand on the first page rather than the last.
Conversation, message and text ads
Conversation ads deliver a branching message in LinkedIn messaging: a subject of up to 60 characters, messages of up to 8,000 characters with up to 10 emojis each, and up to 5 call to action buttons per message (50 per conversation) of up to 25 characters each. An optional banner is up to 300×250 px, JPG or PNG, 2 MB.
Message ads are a single message: subject 60 characters, body 1,500 characters with up to 10 emojis, a button of up to 20 characters, and an optional 300×250 banner that shows on desktop only. In the EEA and Switzerland, sponsored messages reach only members who have opted in.
Text ads still exist on the right rail of desktop pages: a 100×100 image, a 25 character headline and a 75 character description, with a destination URL of up to 500 characters.
LinkedIn video safe zone
LinkedIn's specs give sizes, lengths and file limits, but no safe zone. The numbers below are our own measurement of the LinkedIn mobile app on a 1080×1920 vertical video, and the checker uses them. Treat them as a guide, not an official spec.
| Edge | Measured on 1080×1920 | What sits there (observed) |
|---|---|---|
| Top | 192 px (10%) | The company name and logo, the Promoted label and the follow control |
| Bottom | 346 px (18%) | The headline, the call to action button and the player controls |
| Left and right | 65 px (6%) each | Edge buffer; the sound and reaction controls sit on the right on some layouts |
| Clear area | 950 × 1382 px, from (65, 192) to (1015, 1574) |
Square and landscape videos in the standard feed card carry their intro text above the frame and the headline and call to action below it, so they mostly lose only the player controls. Vertical video in full screen is where the interface covers the frame, and where the margins above matter.
Preflight checklist
- Pick the ratio per placement: 1:1 or 4:5 for the mobile feed, 16:9 for desktop and in stream, 9:16 for full screen vertical.
- Keep video files between 75 KB and 500 MB and under 30 fps. Vertical at most 1080×1920.
- Keep intro text to 150 characters and headlines to 70, or they will be cut.
- Add an SRT caption file to every video.
- Keep text and logos out of the measured margins on vertical video. Confirm it in the checker.
- Tag the destination URL. The UTM builder and the UTM guide for paid media explain which source and medium values land in GA4's Paid Social channel.
LinkedIn ad specs FAQ
What size is a LinkedIn image ad?
1200×628 px for landscape, 1200×1200 px for square and 720×900 px for 4:5 vertical, as JPG, PNG or GIF up to 5 MB.
What is the maximum file size for LinkedIn video ads?
500 MB, with a minimum of 75 KB. Older guides still quote 200 MB, which is out of date.
How long can a LinkedIn video ad be?
3 seconds to 30 minutes. LinkedIn recommends 15 to 30 seconds, and in stream video ads can run up to 90 seconds.
Does LinkedIn have an official video safe zone?
No. LinkedIn publishes sizes and file limits only. The 192 / 346 / 65 px margins on 1080×1920 used here are measured from the app.
How many characters can a LinkedIn ad headline have?
Up to 200, but only about 70 show on most devices before truncation. Carousel card headlines are limited to 45 characters, text ad headlines to 25.
Can LinkedIn carousel ads include video?
No. Carousel cards are images only.
Related guides and tools
- Social media video aspect ratios: every platform's sizes in one chart.
- YouTube ad specs 2026
- TikTok ad specs 2026
- UTM parameters for paid media
Sources, checked 28 September 2026, LinkedIn Marketing Solutions Help: Single image ads, Video ads, Carousel ads, Document ads, Conversation ads, Message ads and Text ads advertising specifications. The video safe zone is measured in the LinkedIn app.