What is the LinkedIn character limit?

3,000 characters for a post, on a profile or a Company Page. An article can run to 125,000.

How long can a LinkedIn video be?

Up to 15 minutes from a profile in LinkedIn's app, 10 minutes from a Page, and 30 minutes through LinkedIn's API.

What size should a LinkedIn image be?

1080 pixels wide is LinkedIn's recommendation, with at least 552×276 and a shape between 3:1 and 4:5. Each image can be up to 5 MB in LinkedIn's app.

How big can a LinkedIn PDF be?

Up to 100 MB and 300 pages. PostDaily takes one PDF of up to 25 MB.

How long can a LinkedIn comment be?

LinkedIn publishes 1,250 characters only for comments in Groups. PostDaily holds first comments to 1,250 each.

Limits by network

LinkedIn character limit, image size and video length

A LinkedIn post can be 3,000 characters, on a profile or a Company Page. It can carry up to 20 images, one video of up to 15 minutes in LinkedIn's app (10 on a Page, 30 through LinkedIn's API), or a PDF of up to 300 pages. Here is every LinkedIn limit, with the LinkedIn page each comes from.

Every number checked against its source on Nov 12, 2026.

LinkedIn limits at a glance

Limit	LinkedIn allows	In PostDaily	Source
Post length	3,000 characters	3,000 characters, on profiles and Pages	LinkedIn Help: Post character limits
Article	Body up to 125,000 characters	Not offered; an article link becomes a card	LinkedIn Help: Articles
Images per post	Up to 20	Up to 20, within your plan's media per post (4 on Free, 6 on Starter, 8 on Pro and 12 on Agency)	LinkedIn Help: Image specifications
Image file	5 MB per image in LinkedIn's app, at least 552×276 pixels, 1080 wide recommended, aspect ratio 3:1 to 4:5	JPEG or PNG, up to 8 MB; WebP is converted to JPEG and larger photos compressed where possible	LinkedIn Help: Image specifications
Image size through the API	Under 36,152,320 pixels; JPEG, PNG or GIF (up to 250 frames); no file size stated	—	LinkedIn API: Images API
Video length	3 seconds to 15 minutes in LinkedIn's app, 10 minutes on a Page; 3 seconds to 30 minutes through the API	3 seconds to 30 minutes, checked before publishing	LinkedIn Help: Video specifications
Video file	75 KB to 500 MB, MP4, by the Videos API (the same page also says uploads can reach 5 GB; the app takes 5 GB)	One MP4, up to 500 MB, within your plan's per-file cap (25 MB on Free, 50 MB on Starter, 100 MB on Pro and 250 MB on Agency)	LinkedIn API: Videos API
Video shape	Aspect ratio 1:2.4 to 2.4:1, 256×144 to 4096×2304 pixels, 10 to 60 frames per second	—	LinkedIn Help: Video specifications
Document (PDF)	Up to 100 MB and 300 pages; PDF, PPT, PPTX, DOC or DOCX	One PDF up to 25 MB, with a title of up to 100 characters (LinkedIn requires one)	LinkedIn Help: Share documents
Alt text	Up to 4,086 characters through the Images API	Up to 4,000 characters	LinkedIn API: Images API
Poll	Question up to 140 characters, 2 to 4 options of 30 characters, open 1, 3, 7 or 14 days	Not offered	LinkedIn API: Poll posts
Link preview image	1200×627 pixels, at least 200 wide	—	LinkedIn Help: Page link images
Comment	1,250 characters, the only figure LinkedIn publishes, on its Groups page	Up to 5 first comments, 1,250 characters each	LinkedIn Help: Group limits
Scheduling window	10 minutes to 3 months ahead from a profile; 1 hour to 3 months from a Page	Up to 12 months ahead	LinkedIn Help: Schedule posts

3,000 characters, and where it folds

LinkedIn allows 3,000 characters in a post, on a personal profile or a Company Page alike. The feed shows the first few lines and folds the rest behind See more, but LinkedIn doesn't document where the fold falls, so put the point of the post first. Articles are a separate format with room for 125,000 characters.

Video: the app, Pages and the API disagree

LinkedIn's help gives three video lengths. A video posted from a profile in LinkedIn's app can run 3 seconds to 15 minutes, and one posted from a Page up to 10 minutes. The Videos API, which scheduling tools use, says 3 seconds to 30 minutes and 500 MB, although the same page says an upload can reach 5 GB. The app takes files up to 5 GB. If a long Page video matters, test one first.

Images

A post holds up to 20 images. LinkedIn's help asks for at least 552×276 pixels, recommends 1080 pixels wide, accepts shapes from 3:1 to 4:5, and caps each upload in its app at 5 MB. The API counts pixels instead, up to 36,152,320 per image, and gives no file size. A link's preview image is 1200×627.

Documents (PDF carousels)

LinkedIn takes documents of up to 100 MB and 300 pages and shows them as a swipeable carousel. Through its API every document needs a title, which LinkedIn prints on the cover. PostDaily accepts one PDF of up to 25 MB, because the Documents API takes the whole file in one upload. How to post a PDF on LinkedIn.

What PostDaily checks, and what it doesn't

Before a post is scheduled, PostDaily checks the text length, the number and format of images, one MP4 video up to 500 MB, the PDF's size and title, and the article card's title and description. It doesn't check a video's length, and it doesn't offer polls. LinkedIn is still reviewing PostDaily's access, so for now every customer shares one daily allowance of LinkedIn requests; the LinkedIn scheduler page explains what that means.

Common questions

What is the LinkedIn character limit?: 3,000 characters for a post, on a profile or a Company Page. An article can run to 125,000.
How long can a LinkedIn video be?: Up to 15 minutes from a profile in LinkedIn's app, 10 minutes from a Page, and 30 minutes through LinkedIn's API.
What size should a LinkedIn image be?: 1080 pixels wide is LinkedIn's recommendation, with at least 552×276 and a shape between 3:1 and 4:5. Each image can be up to 5 MB in LinkedIn's app.
How many images can a LinkedIn post have?: Up to 20.
How big can a LinkedIn PDF be?: Up to 100 MB and 300 pages. PostDaily takes one PDF of up to 25 MB.
How long can a LinkedIn comment be?: LinkedIn publishes 1,250 characters only for comments in Groups. PostDaily holds first comments to 1,250 each.