Publishing to LinkedIn
Post shapes, media limits, and the carousel and document paths.
Post shapes
Picked from what the post carries, in this order:
- Video: one video with the text
- Document: a PDF attached to the post, LinkedIn's native document viewer
- Carousel: turn on post as carousel and multiple images publish as one swipeable document, with an optional carousel title
- Multi-image: up to 20 images in one post
- Single image
- Link post: the post's link as LinkedIn's preview card, with the post text above it
- Text only
Per post you can set visibility: public, or connections only.
Limits
| Limit | Value |
|---|---|
| Text | 3,000 characters, hashtags appended |
| Media | Up to 20 items |
| Image size | 10 MB (JPEG, PNG, or GIF) |
| Video | MP4, up to 500 MB and 30 minutes |
| Documents | |
| Alt text | Up to 4,086 characters per image |
Mentions
LinkedIn renders a mention only when the text carries the entity's URN, in the form @[Devtestco](urn:li:organization:2414183). The composer searches organizations and hands you that snippet to paste.
Turn on Turn @names into LinkedIn mentions and each @name in the post is looked up when it publishes. One that resolves becomes a mention under the organization's own name; one that does not stays exactly as you typed it. The switch is off unless you set it, so an ordinary @ in a sentence is never turned into a link behind your back.
curl "https://api.fopost.com/v1/accounts/{account_id}/linkedin/mentions?q=devtestco" \
-H "X-API-Key: $FOPOST_API_KEY"Over the API, set resolve_mentions to true in the post's LinkedIn platform settings, or write the @[Name](urn) form yourself and leave the switch off.
People cannot be searched: LinkedIn has no public person search, so a member mention has to be written with a URN you already hold.
No native articles
LinkedIn has no API for authoring articles: that is LinkedIn's gap, not a toggle. A post composed as an article reaches LinkedIn as its companion link post: title, description, and link card pointing at the article's home.
Deleting
Deleting the post in FoPost deletes it on LinkedIn.
Next
Related documentation
- LinkedIn
Posts with images, video, PDF documents, and carousels, for profiles and company pages.
- LinkedIn Analytics
What LinkedIn reports for profiles, and the extra metrics company pages get.