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LinkedIn

Prepare and review your LinkedIn posts.

Prepare a considered version for your profile or company page.

Write for the account you mean

Choose the profile or company page and review the version in that context before scheduling.

Formats, limits and results

See the supported formats, text and media limits, required settings, platform-only features and available metrics below. These details come from the same capability data the editor uses.

Confirm the version you intend to share

A person confirms publishing by default. A workspace owner can explicitly enable auto-publish for a particular agent in a particular workspace.

Current access

Limited

Company pages are waiting for LinkedIn to approve our Community Management API access, which LinkedIn reviews by hand. Personal profiles work now; posts for pages go to the post kit until then.

Account types: profile, page

LinkedIn profile: Post as yourself, from your personal LinkedIn profile.

LinkedIn company page: Post as a company page you're an admin or content admin of.

Formats and limits

Text post

A text post, up to 3,000 characters.

Text
Required; 3000 characters maximum
Threads
Not supported for this format
Media per post
0 minimum; 0 maximum; none
Mixed images and video
Not supported
Alternative text
Not supported

What stays in the platform app

  • LinkedIn has no way to schedule a post ahead of time through its API. heyeveryone holds the post and publishes it at the chosen time.
  • Tagging people or pages. LinkedIn's API doesn't support @-mentions from personal profiles, so an @name is posted as plain text. Add tags in LinkedIn after the post is live.

Image post

One image (JPG, PNG or GIF) with optional text.

Text
Optional; 3000 characters maximum
Threads
Not supported for this format
Media per post
1 minimum; 1 maximum; image
Mixed images and video
Not supported
Alternative text
Supported; 4086 characters maximum

Image specifications

File types
image/jpeg, image/png, image/gif
Maximum bytes
Not documented

What stays in the platform app

  • LinkedIn has no way to schedule a post ahead of time through its API. heyeveryone holds the post and publishes it at the chosen time.
  • Tagging people or pages. LinkedIn's API doesn't support @-mentions from personal profiles, so an @name is posted as plain text. Add tags in LinkedIn after the post is live.

Multi-image post

Two to twenty images shown as a grid, with optional text.

Text
Optional; 3000 characters maximum
Threads
Not supported for this format
Media per post
2 minimum; 20 maximum; image
Mixed images and video
Not supported
Alternative text
Supported; 4086 characters maximum

Image specifications

File types
image/jpeg, image/png, image/gif
Maximum bytes
Not documented

What stays in the platform app

  • LinkedIn has no way to schedule a post ahead of time through its API. heyeveryone holds the post and publishes it at the chosen time.
  • Tagging people or pages. LinkedIn's API doesn't support @-mentions from personal profiles, so an @name is posted as plain text. Add tags in LinkedIn after the post is live.
  • Swipeable carousel posts are for ads only on LinkedIn. A regular post with several images is still possible.

Video post

One MP4 video, 3 seconds to 30 minutes, with optional text.

Text
Optional; 3000 characters maximum
Threads
Not supported for this format
Media per post
1 minimum; 1 maximum; video
Mixed images and video
Not supported
Alternative text
Not documented

Video specifications

File types
video/mp4
Maximum bytes
Not documented
Minimum duration (ms)
3000
Maximum duration (ms)
1800000

Settings before publishing

  • Video title. Shown with the video on LinkedIn. Optional.

What stays in the platform app

  • LinkedIn has no way to schedule a post ahead of time through its API. heyeveryone holds the post and publishes it at the chosen time.
  • Tagging people or pages. LinkedIn's API doesn't support @-mentions from personal profiles, so an @name is posted as plain text. Add tags in LinkedIn after the post is live.

Link post

A post with a link preview card. LinkedIn doesn't build the preview from the URL through the API: the title, description and optional thumbnail image come from us.

Text
Optional; 3000 characters maximum
Threads
Not supported for this format
Media per post
0 minimum; 1 maximum; image
Mixed images and video
Not supported
Alternative text
Not supported

Image specifications

File types
image/jpeg, image/png, image/gif
Maximum bytes
Not documented

Settings before publishing

  • Link (required). The page the card links to.
  • Card title (required). The title on the link card.
  • Card description. A short description under the title. Optional.

What stays in the platform app

  • LinkedIn has no way to schedule a post ahead of time through its API. heyeveryone holds the post and publishes it at the chosen time.
  • Tagging people or pages. LinkedIn's API doesn't support @-mentions from personal profiles, so an @name is posted as plain text. Add tags in LinkedIn after the post is live.
  • LinkedIn does not build the link card from the page on its own through the API; the title (and optionally a description and image) must be supplied.

Results you can read

impressions, likes, comments, shares, clicks.

Availability varies by account and format. A missing number is not zero.

More to know

  • No thread format: LinkedIn has no chain of posts by the same author. The closest thing is resharing your own post.
  • The 3,000 character limit comes from the older UGC Post API docs; the Posts API page only documents a FIELD_LENGTH_TOO_LONG error without a number.
  • Image max size unconfirmed: the docs only say an image must be under 36,152,320 pixels, and a GIF up to 250 frames. The adapter checks the pixel limit.
  • Video max size: the video spec says 75 KB to 500 MB (the upload schema allows 5 GB); length 3 seconds to 30 minutes. The adapter rejects videos under 75 KB and warns above 500 MB.
  • Multi-image posts (MultiImage API) take 2 to 20 images.
  • Alt text (up to 4,086 characters, under 120 recommended) is confirmed for images, not for video. A link card's thumbnail has no alt text.
  • Text (commentary) is optional on image, video and link posts. The Posts API does not scrape links: a link post's title, description and thumbnail come from us.
  • No native scheduling: heyeveryone publishes at the scheduled time.
  • No idempotency key and no documented duplicate check on the Posts API; the older UGC API rejected the same text within 10 minutes as a duplicate.
  • Access tokens last 60 days. LinkedIn only gives refresh tokens to approved partners (365 days, not extended by refreshing), so without one the account must be reconnected before the token expires.
  • Personal profiles: LinkedIn doesn't let a posting-only token read back an image's processing status or list the member's posts (r_member_social is closed), so an unconfirmed profile post falls back to asking you, and heyeveryone can't confirm a profile image finished processing.
  • Post results: company pages through share statistics (needs a page ADMINISTRATOR); personal profiles only with r_member_postAnalytics, which comes with the Community Management API.
  • Community Management API (company pages) must be requested on its own new developer app with no other products; Development tier first (500 calls per app, 100 per member a day), then Standard with a screencast.
  • Rate limits are not published for the Posts API; the older Share on LinkedIn docs give 150 posts per member and 100,000 per app a day.
  • Polls exist for organic posts through a separate Poll API that was not checked; not treated as a format.

Sources

Questions and answers

Can I use every feature in the platform app?
No. Platform APIs expose only some features. The format guide identifies what you need to finish manually.