LinkedIn ad specs: single image and video

LinkedIn single image ads work best at 1200 × 628 px (1.91:1), 1200 × 1200 px (1:1) or 720 × 900 px (4:5, mobile only), up to 5 MB. Video ads are MP4, 3 seconds to 30 minutes, up to 500 MB, and LinkedIn names 4:5 as its recommended video ratio.

Last checked 28 September 2026 against the platforms' own pages · Every figure links to its source

Placement	Shape	File	Length
Single image	1.91:1 1200×628, 1:1 1200×1200, 4:5 720×900	JPG/PNG/GIF up to 5 MB	still
Video	16:9 1920×1080, 1:1 from 360×360, 4:5 720×900, 9:16 720×1280	MP4 up to 500 MB	3 s to 30 min

What size should LinkedIn image ads be?

Shape	Recommended	Range
1.91:1	1200 × 628 px	640 × 360 px to 7680 × 4320 px
1:1	1200 × 1200 px	360 × 360 px to 4320 × 4320 px
4:5	720 × 900 px	mobile only

Files can be JPG, PNG and GIF, up to 5 MB.

4:5 vertical images show on mobile only. LinkedIn recommends 4:5 over 1:1.91 vertical, which gets borders.
Animated GIFs must be 250 frames or shorter.
Images narrower than 401 px show as a thumbnail.

Source: LinkedIn Help: single image ads specifications.

What are the LinkedIn video ad specs?

Shape	Recommended	Range
4:5	720 × 900 px	360 × 450 px to 1080 × 1350 px
16:9	1920 × 1080 px	640 × 360 px to 1920 × 1080 px
9:16	720 × 1280 px	360 × 640 px to 1080 × 1920 px
1:1	not stated	360 × 360 px to 1920 × 1920 px

MP4 only, H.264 and VP8 video, AAC audio under 64 kHz, a file between 75 KB and 500 MB, and a frame rate below 30 fps. LinkedIn does not accept Apple ProRes. Source: LinkedIn Help: video ads specifications.

How long should LinkedIn video ads be?

Anywhere from 3 seconds to 30 minutes.

15 to 30 seconds qualifies for every placement. In-stream placements take up to 90 seconds.
Videos under 30 seconds loop until 30 seconds have played.

Full specs

Every rule Gatecheck checks for these placements, with its source.

Single image

LinkedIn Sponsored Content single image

Ratios	1.91:1 (1200×628 recommended), min 640×360, max 7680×4320; 1:1 (1200×1200 recommended), min 360×360, max 4320×4320; 4:5 (720×900 recommended)
Image formats	JPG, PNG, GIF
Image weight	up to 5 MB

4:5 vertical images show on mobile only. LinkedIn recommends 4:5 over 1:1.91 vertical, which gets borders.
Animated GIFs must be 250 frames or shorter.
Images narrower than 401 px show as a thumbnail.

Source: LinkedIn Help: single image ads specifications

Video

LinkedIn video ads

Ratios	16:9 (1920×1080 recommended), min 640×360, max 1920×1080; 1:1, min 360×360, max 1920×1920; 4:5 (720×900 recommended), min 360×450, max 1080×1350; 9:16 (720×1280 recommended), min 360×640, max 1080×1920
Video files	.mp4
Codecs	H.264, VP8
Video weight	up to 500 MB
Length	from 3 s, up to 30 min, 30 s or less recommended
Frame rate	30 fps or lower
Audio	recommended

LinkedIn names 4:5 as its recommended ratio for video.
15 to 30 seconds qualifies for every placement. In-stream placements take up to 90 seconds.
Videos under 30 seconds loop until 30 seconds have played.
LinkedIn states a frame rate below 30 fps; Gatecheck flags anything above 30.

Source: LinkedIn Help: video ads specifications

What Gatecheck checks

Drop a file into the checker and it is read in your browser and tested against these placements and the other 22 in the library:

Aspect ratio and pixel size against each ratio the placement accepts, and any minimum or recommended size
Image format and file weight, CMYK and wide-gamut colour profiles, EXIF rotation and transparency
Container, codec, file weight and length, measured from the file itself to the hundredth of a second
Interlaced video
Black bars from a wide edit placed inside a tall frame, found by sampling real frames
Loudness and true peak to ITU-R BS.1770, flagging extremes where the platform sets no target

Check a file against LinkedIn and every other placement

Checking one file at a time is free, with every check. Pro checks a whole campaign against a delivery plan and exports the report. Nothing is uploaded.

Open the checker See a sample campaign

Gatecheck is not affiliated with LinkedIn. Specs come from their public help pages and, where marked secondary, from industry guides. Every source is linked on this page and was last checked on 28 September 2026.