Platform: LinkedIn

The LinkedIn platform posts to your companies feed.

Set up the platform

Create a new App in your linkedin account

create an company your account can manage
find your company id (in the url, like , 93841222)
- save this as LINKEDIN_COMPANY_ID in your users storage.json
create an app to manage the company page
https://www.linkedin.com/developers/apps/new
add 'share on linkedin' product on your app
add 'advertising api' product to the app
- this requires a lengthy application form - wait for approval
on the 'settings' tab of your app
- click the 'verify' button next to the page you want the app to manage
  and follow instructions there
on the 'auth' tab of your app
- copy ClientID and ClientSecret
  and save those as FAIRPOST_LINKEDIN_CLIENT_ID and FAIRPOST_LINKEDIN_CLIENT_SECRET
  in your global .env
- add redirect url for your app as set in your .env (http://localhost:8000/callback)

Connect the platform to a user

Enable the platform

Add 'linkedin' to your FEED_PLATFORMS in your users storage.json

Get an OAuth2 Access Token for your platform

This token last for 60 days and should be refreshed. The refresh token (if given) lasts for 1 year.

call ./fairpost.js @userid setup-platform --platform=linkedin
follow instructions from the command line

Test the platform

call ./fairpost.js @userid test-platform --platform=linkedin

Connect the platform to another user

One fairpost user can only manage one page. If you create a second user, you can use the same app id to manage a different page. The app is registered on your account, so if you can manage the other page, so can the app.

Create a new user

call ./fairpost.js create-user --userid=foo
add linkedin to its FAIRPOST_PLATFORMS
find your company id (in the url, like , 93841222)
- save this as LINKEDIN_COMPANY_ID in your users storage.json

Get an OAuth2 Access Token for your other page

call ./fairpost.js @foo setup-platform --platform=linkedin
follow instructions from the command line

Test the other installation

call ./fairpost.js @foo test-platform --platform=linkedin

More user settings

LINKEDIN_PLUGIN_SETTINGS - a json object describing / overwriting the plugins used to prepare posts

Limitations

Images

...

Supported Formats

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File Size

xxx

video

https://www.linkedin.com/help/linkedin/answer/a548372

Maximum file size: 5GB
Minimum file size: 75KB
Maximum video duration: 15 minutes when uploading from desktop and 10 minutes when uploading from the LinkedIn mobile app.
Minimum video duration: 3 seconds
Resolution range: 256x144 to 4096x2304
Aspect ratio: 1:2.4 - 2.4:1
Frame rates: 10fps - 60 fps
Bit rates: 192 kbps - 30 Mbps

Random documentation

access token

https://www.linkedin.com/advice/1/how-do-you-use-refresh-tokens-different-types-oauth-20-clients client credentials flow

https://learn.microsoft.com/en-us/linkedin/shared/authentication/client-credentials-flow?context=linkedin%2Fcontext

require scopes (r_liteprofile, w_member_social)

https://stackoverflow.com/a/65652798/95733 You need to select an enterprise product, like the Marketing Developer Platform. Go to your app and request access to this product. Your app needs to be reviewed first so this may take some time.

refresh tokens

https://learn.microsoft.com/en-us/linkedin/shared/authentication/programmatic-refresh-tokens

LinkedIn supports programmatic refresh tokens for all approved Marketing Developer Platform (MDP) partners. By default, access tokens are valid for 60 days and programmatic refresh tokens are valid for a year.