LinkedIn Comments Scraper

Extract comments and replies from any LinkedIn post at scale. Get full author details, comment text, timestamps, and engagement metrics — exported as clean structured data.

What This Actor Does

LinkedIn Comments Scraper fetches comments from one or more LinkedIn post URLs using LinkedIn's official Voyager API. For each comment it returns the author's name, profile URL, headline, comment text, timestamp, and reaction count. Optionally, it also fetches replies to top-level comments and links each reply back to its parent via parentCommentId.

Key features:

• Scrapes comments from /feed/update/ and /posts/ URL formats
• Fetches up to 500 top-level comments per post
• Optionally retrieves replies (nested comments) as separate dataset rows
• Automatically paginates through all available comments
• Works without a browser — pure HTTP via LinkedIn's Voyager API

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Input

Field	Type	Required	Description
postUrls	string[]	Yes	One or more LinkedIn post URLs to scrape. Supports both /feed/update/urn:li:activity:…/ and /posts/username_slug-ID/ formats.
cookie	string	Yes	Your LinkedIn session cookie (li_at). See setup instructions below.
maxCommentsPerPost	integer	No	Maximum top-level comments to scrape per post. Default: 50. Range: 1–500.
includeReplies	boolean	No	Set true to also fetch replies to top-level comments. Default: false.
proxyConfiguration	object	No	Apify proxy settings. Residential proxy recommended for best reliability.

Accepted Post URL Formats

https://www.linkedin.com/feed/update/urn:li:activity:7329761432933134337/
https://www.linkedin.com/posts/williamhgates_climate-7329761432933134337/

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Output

Each scraped comment is a separate dataset row. Replies (when includeReplies is enabled) are also individual rows, identified by isReply: true.

Field	Type	Description
commentId	string	Unique numeric comment ID extracted from LinkedIn's internal URN.
postUrl	string	Canonical URL of the source post (query strings stripped).
postId	string	Numeric activity ID of the source post.
authorName	string	Full name of the commenter.
authorProfileUrl	string	Full URL to the commenter's LinkedIn profile.
authorHeadline	string	The commenter's LinkedIn headline/job title.
authorAvatar	string	CDN URL of the commenter's profile photo.
commentText	string	Full text of the comment.
commentedAt	string	ISO 8601 UTC timestamp when the comment was posted.
reactionsCount	integer	Total number of reactions on this comment.
repliesCount	integer	Number of replies on this comment (only on top-level comments).
isReply	boolean	true if this row is a reply to another comment; false for top-level.
parentCommentId	string	commentId of the parent comment (only present when isReply is true).
scrapedAt	string	ISO 8601 UTC timestamp when this record was scraped.

Example Output — Top-Level Comment

{
  "commentId": "7330000000000000001",
  "postUrl": "https://www.linkedin.com/feed/update/urn:li:activity:7329761432933134337/",
  "postId": "7329761432933134337",
  "authorName": "Jane Doe",
  "authorProfileUrl": "https://www.linkedin.com/in/janedoe/",
  "authorHeadline": "VP of Product at TechCorp",
  "authorAvatar": "https://media.licdn.com/dms/image/D4E03AQGexample/profile-displayphoto.jpg",
  "commentText": "This is such an insightful post! Thanks for sharing.",
  "commentedAt": "2024-11-14T22:13:20+00:00",
  "reactionsCount": 12,
  "repliesCount": 3,
  "isReply": false,
  "scrapedAt": "2024-11-15T09:00:00+00:00"
}

Example Output — Reply

{
  "commentId": "7330000000000000002",
  "postUrl": "https://www.linkedin.com/feed/update/urn:li:activity:7329761432933134337/",
  "postId": "7329761432933134337",
  "authorName": "John Smith",
  "authorProfileUrl": "https://www.linkedin.com/in/johnsmith/",
  "authorHeadline": "Software Engineer",
  "commentText": "Totally agree with Jane!",
  "commentedAt": "2024-11-14T23:45:00+00:00",
  "reactionsCount": 2,
  "isReply": true,
  "parentCommentId": "7330000000000000001",
  "scrapedAt": "2024-11-15T09:00:01+00:00"
}

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Setting Up Your LinkedIn Cookie

The actor authenticates using your LinkedIn session cookie. This is a secure, read-only token that does not expose your password.

Steps to get your li_at cookie:

1. Log into LinkedIn in your browser.
2. Open DevTools (F12 or right-click → Inspect).
3. Go to Application → Cookies → https://www.linkedin.com.
4. Find the cookie named li_at and copy its value.
5. Paste this value into the cookie input field.

Alternatively — full cookie export:

If you use a browser extension like EditThisCookie, you can export all cookies as a JSON array and paste that directly. The actor will automatically extract li_at from the array.

Note: Keep your li_at cookie private. It grants read access to your LinkedIn account. Do not share it with anyone.

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Using includeReplies

When includeReplies is set to true, the actor fetches replies for every top-level comment that has at least one reply. Each reply is pushed to the dataset as a separate row with isReply: true and a parentCommentId field pointing back to its parent comment.

Example input with replies:

{
  "postUrls": ["https://www.linkedin.com/feed/update/urn:li:activity:7329761432933134337/"],
  "cookie": "YOUR_LI_AT_VALUE",
  "maxCommentsPerPost": 50,
  "includeReplies": true
}

With this configuration, a post that has 20 top-level comments — where 5 of them have 3 replies each — will produce 20 + 15 = 35 dataset rows.

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Frequently Asked Questions

Why do some comments have no authorName? Deleted accounts or very restricted privacy settings may result in comments with empty author fields. The actor skips any record that cannot be assigned a unique commentId.

What happens to deleted comments? LinkedIn removes deleted comments from the API response. The actor only sees what LinkedIn's API returns at the time of scraping.

Are anonymous comments supported? LinkedIn does not allow truly anonymous comments — all commenters have a profile. However, some users may have private profiles, in which case the author name will still be returned but authorHeadline or authorAvatar may be absent.

How many comments can I scrape? The LinkedIn Comments API returns up to 500 top-level comments per post (controlled by maxCommentsPerPost). Replies are fetched one page (up to 10 replies) per top-level comment by default.

Will the actor get rate-limited? The actor uses polite delays between API calls. For large scraping jobs (many posts or very high maxCommentsPerPost), using a residential proxy is recommended to avoid LinkedIn's rate limiting.

Can I scrape comments from private posts? No. The actor uses your li_at cookie, so it can only access posts visible to your LinkedIn account. Posts from connections or public posts work best.

Why is a cookie required? LinkedIn's Voyager API requires authentication for all endpoints — including public post comments. There is no publicly accessible unauthenticated API for this data.

My cookie stopped working — what should I do? LinkedIn session cookies (li_at) typically expire after several weeks or when you log out. Simply log back into LinkedIn, copy your new li_at value, and update the actor input.

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Tips for Best Results

• Use residential proxy: LinkedIn is more likely to rate-limit datacenter IP ranges. Enabling residential proxy in proxyConfiguration significantly improves reliability.
• Batch multiple posts: Pass multiple URLs in postUrls to scrape them in one run.
• Start with includeReplies: false: For posts with many comments, fetching replies multiplies the number of API calls. Enable it only when you need the reply data.
• Fresh cookie: Use a cookie obtained within the last few days for best reliability.

Explore the rest of the LinkedIn suite

Need a different LinkedIn surface? Pair this actor with any of the others in the LinkedIn Suite — all published under the same publisher and built to share the same cookie format and output conventions.

Actor	What it scrapes
LinkedIn Company Employees Scraper	Employee list for any company (by URN)
LinkedIn Company Info Scraper	Company About page (size, HQ, industry, specialties)
LinkedIn Company Posts Scraper	Posts published from a company page
LinkedIn Events Scraper	Events by keyword/URL with full event detail
LinkedIn Hashtag Posts Scraper	Posts ranked under a #hashtag
LinkedIn Jobs Scraper	Job listings via the public jobs-guest API
LinkedIn Jobs Scraper Ultra	Same as jobs-scraper + full detail enrichment
LinkedIn Learning Courses Scraper	LinkedIn Learning course catalog by keyword
LinkedIn People Search Scraper	People search with every LinkedIn facet (role, company, school, location, etc.)
LinkedIn Post Reactions Scraper	Reactors on a post (name, headline, reaction type)
LinkedIn Post Scraper	Full post (text, media, engagement counts, author)
LinkedIn Post Search Scraper	Posts matching a keyword (with date/author/network filters)
LinkedIn Profile Posts Scraper	All posts/reposts/articles for one profile
LinkedIn Profile Scraper	Public profile fields (name, headline, positions, education, skills)
LinkedIn Profile Scraper Pro	Profile fields + extras (recommendations, organizations, languages)
LinkedIn Profile Scraper Pro Ultra	Pro + premium fields (contact info, followers list when allowed)
LinkedIn Profile Scraper Ultra	Profile + the full upstream dash-120 surface
LinkedIn Profile Search by Name	Search profiles by person name (great for matching CSVs of names)
LinkedIn Schools Alumni Scraper	Alumni list for any LinkedIn school page
LinkedIn Top Content Scraper	Trending / top-engagement posts by topic
LinkedIn User Activity Scraper	Reactions + comments + posts feed for one profile

All actors share the same cookie input format (plain li_at OR full cookies JSON array) and the same omit-empty output convention.