# Connect LinkedIn

Heropost publishes to your LinkedIn profile and to LinkedIn Pages where you're a Super admin. Post text, photos, a video or a link, with first comments and @mentions, and answer Page comments in the Social Inbox.

Last checked: Oct 8, 2026 on the live app. Source: https://heropost.ai/docs/networks/linkedin/

## What you need

- **A LinkedIn account.** Your personal profile is always available to connect.
- **To post as a company: Super admin of its LinkedIn Page.** LinkedIn only shares Pages where you're a Super admin, so a Page where you have another role may not be listed.
- **The owner or Admin role** in your Heropost workspace.

## Connect your profile and Pages

1. Click your **workspace name** at the top of Heropost, then **Accounts**.
2. Press **Add Profile** and choose **LinkedIn**.
3. LinkedIn opens in a small window. Sign in if LinkedIn asks, and allow access.
4. Back in Heropost, **Add Social Account** lists your personal profile under **Profiles** and your Pages under **Pages**. Tick the ones you want.
5. Press **Done**. Heropost shows **Account successfully added**.

[Screenshot: The Add Social Account window listing a LinkedIn profile and two LinkedIn Pages]

Your profile and each Page are separate accounts in Heropost. Posts to your profile appear as you; posts to a Page appear as the company.

**A Page is missing?** Check your role on LinkedIn: open the Page as an admin and look at its admin settings. Once you're a Super admin, add LinkedIn again and the Page appears.

## What you can post

| Post | Supported | Details |
|---|---|---|
| Text only | Yes | Up to 3,000 characters. |
| Photos | Yes | Up to 9 JPG, PNG or GIF images. |
| Video | Yes | One MP4 or MOV, 3 seconds to 15 minutes, up to 5 GB. |
| Photos and video together | No | Use photos, or one video. |
| Link post | Yes | Post Type **Link**. The post shows an article card with the page's title, description and preview image. |
| Documents (PDF carousels), polls, alt text | No | To share a PDF, post a link to it, or save its pages as images in one post. |

| Text | Limit |
|---|---|
| Caption | 3,000 characters |
| First comment | 20,000 characters |

**Photo size.** The editor accepts photos up to 30 MB. LinkedIn's own recommendations, listed under **Media Requirements** in the upload box, are images under 5 MB, at least 552 × 276 pixels, between 3:1 and 2:3 in shape. Staying within them gives the best results.

## Options in the LinkedIn tab

[Screenshot: The LinkedIn tab in the post editor with Post Type set to Link, and the article card preview]

- **Post Type:** **Media/Caption** (text, photos or a video) or **Link**. A **Link** post can't carry your own photos or video.
- **Link:** the address for a **Link** post. Use the full address, starting with https://.
- **@mentions:** in the caption, type **@** and the start of a company's name, then pick it from the suggestions. Tick a LinkedIn account on the post first; Heropost uses it to search.
- **First Comment:** posted from the same profile or Page right after the post goes out. See [Add a first comment](/docs/posting/first-comment/).

## Limits and holds

**Connections expire.** LinkedIn sets how long Heropost's access lasts. Heropost renews each connection automatically in the week before it expires, while LinkedIn allows it. When a connection lapses anyway, posts fail with "LinkedIn error. The token used in the request has expired", and Hero_Agent on Home lists the account as needing attention.

To fix it, [reconnect](/docs/social-accounts/reconnect/) the account, signing in as the Page's Super admin. Then send the failed posts again: open each one from **Content → Posting Errors** and use **⋮ → Duplicate Failed**.

## Analytics and the Social Inbox

- **Analytics:** for **Pages**, reach, views, likes, comments and shares for each post. Heropost doesn't show post analytics for personal profiles. See [Analytics](/docs/analytics/analytics/).
- **Social Inbox:** comments on your Page's posts, which you can answer. This needs one extra step, because LinkedIn grants inbox access separately:

1. On the **Accounts** page, open the **⋮** menu on the LinkedIn Page and choose **Connect inbox**.
2. LinkedIn's sign-in opens in the same tab. Sign in as the Page's admin and allow access.
3. Heropost shows **LinkedIn inbox connected**: "Comments on your LinkedIn page posts will appear in the Social Inbox after the next sync." Press **Go to Social Inbox**.

If it shows **Could not connect LinkedIn inbox** with a reason, press **Back to Social Accounts** and try **Connect inbox** again. See [Connect the LinkedIn inbox](/docs/analytics/linkedin-inbox/).

## Errors and fixes

### When you connect or reconnect

| Message | What it means | What to do |
|---|---|---|
| "Authentication cancelled" | LinkedIn's window was closed or blocked, or you didn't allow access. | Allow pop-ups for app.heropost.io and try again. |
| Only your profile is listed | LinkedIn shares only Pages where you're a Super admin. | Become Super admin of the Page, then add LinkedIn again. |
| "Selected account not found" | You reconnected with a LinkedIn account that can't manage this profile or Page. | Sign in to LinkedIn as the profile itself, or as the Page's Super admin. |

### In the post editor

| Message | What it means | What to do |
|---|---|---|
| "You can upload up to 9 images or 1 video" / "You can upload up to 9 files" | Too many files, or photos mixed with a video. | Keep up to 9 photos, or one video. |
| "Please select only one video file at a time" | You added a second video. | Use one video. |
| "Wrong file format. Please upload JPG, PNG, GIF, MP4 or MOV" | LinkedIn posts take those types only. PDFs aren't accepted. | Convert the file, or link to the PDF. |
| "Image size limit: 30MB maximum" / "Video size limit: 5120MB maximum" | The file is too big. | Compress it. |
| "Duration of the video must be between 3 seconds and 15 minutes" | The video is too short or too long. | Trim it. |
| "You can have up to 3000 characters in caption" / "You can have up to 20000 characters in first comment" | The text is too long. | Shorten it. |
| "Link is required" / "Invalid URL" | A **Link** post needs a full web address. | Paste the full address, starting with https://. |
| "Codec is not supported. For more information please check requirements" | Your browser can't read the video. | Export it again as an H.264 MP4. |
| Hovering **Schedule All** shows "Please select accounts for LinkedIn" | LinkedIn is on, but no LinkedIn account is ticked. | Tick one, or switch LinkedIn off for the post. |
| "Unable to post because LinkedIn requires link." / "Unable to post because LinkedIn requires caption or media." (when scheduling) | The LinkedIn version is missing its link, or is empty. | Add the link, or text or media, on the LinkedIn tab. |

### When a post fails

Failed posts are listed under **Content → Posting Errors**. LinkedIn's own messages start with "LinkedIn error."

| Message | What it means | What to do |
|---|---|---|
| "LinkedIn error. The token used in the request has expired" | The LinkedIn connection expired. | [Reconnect](/docs/social-accounts/reconnect/) the account, then send the post again with **Duplicate Failed**. |
| "LinkedIn error." followed by LinkedIn's message | LinkedIn refused the post and gave its reason. | Read LinkedIn's reason, then send the post again with **Duplicate Failed** and fix the copy before you schedule it. |
| "PostId cannot be retrieved" / "ETag cannot be retrieved" | LinkedIn didn't confirm the post. | Check the profile or Page on LinkedIn: if the post isn't there, send it again with **Duplicate Failed**. |
| "Failed to create a comment to LinkedIn post" | The post went out, but the first comment didn't. | Add the comment on LinkedIn. |

Failed posts aren't sent again by themselves. After fixing the cause, open the post from **Content → Posting Errors** and choose **⋮ → Duplicate Failed**: you get a draft with only the accounts that failed, ready to schedule. See [The Posting Errors page](/docs/troubleshooting/posting-errors/).

## Questions

**Why can't I see my company Page?**

LinkedIn only lets a Page's Super admin connect it to an app. Ask a Super admin to give you that role, or to connect the Page themselves, for example through an [invite link](/docs/social-accounts/invite-a-client/).


**Can I post a PDF or document carousel?**

No. Heropost posts text, up to 9 photos, one video or a link to LinkedIn. To share a PDF, link to it, or post its pages as images.


**Can I post to my profile and my Page at the same time?**

Yes. Tick both in the post. Each one is published as its own post.


**Why are there no analytics for my personal profile?**

Heropost shows LinkedIn post analytics for Pages only.


**Do I need to reconnect LinkedIn regularly?**

Sometimes. Heropost renews LinkedIn connections automatically, but LinkedIn can still end one. When posts fail with "The token used in the request has expired", reconnect.