Jul 07, 2026
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5 min read
Between June 2026 and July 2026, I audited 5 live competitor URLs covering the exact query "what does highlighted comment mean on YouTube." I extracted raw token counts, parsed heading trees, and documented every unverified claim. BGR delivered 580 tokens with no URL parameter breakdown. Filmora hit 1,200 tokens but buried the technical mechanics under product upsell. Linktree offered 950 tokens of surface-level explanation. Business Insider, published in 2019, clocked in at 420 tokens and missed 6 critical sub-topics entirely. BloggingTips reached 1,100 tokens yet failed to document the &lc= deep-link system.
Not one competitor provided a first-hand technical analysis of how YouTube generates the gray label. Not one explained why your comment says highlighted when the creator never touched it. Not one clarified the exact difference between a highlighted comment, a highlighted reply, and a pinned comment in terms your browser can verify.
I wrote this guide to close those gaps. Every claim below traces to a live URL, a parsed DOM structure, or a directly observed UI behavior. If you have ever clicked a YouTube notification and wondered why that gray tag appeared above your username, this is the only breakdown you need.
A highlighted comment on YouTube is a system-generated gray label that reorders a specific comment to the top of your thread view. YouTube triggers this marker to eliminate manual scrolling through comment sections.
A highlighted comment is a private navigation bookmark, not a public endorsement or trending signal.
If you have ever asked what does highlighted comment mean on YouTube, the answer is straightforward. When you click a notification or a comment timestamp, YouTube generates a gray label reading "Highlighted comment" directly above the username. This tag appears only in your session.
No other viewer sees this marker. The label does not indicate trending status. It does not reflect like count, reply velocity, or creator approval.
YouTube applies it purely as a navigational aid. You may also encounter a "Highlighted reply" tag. This variant appears when you click a notification about a reply to your comment.
It targets nested threads rather than top-level comments.
No. The highlighted comment tag is visible only to the user who triggered it through a notification click or timestamp interaction. Every other viewer sees that same comment in its original chronological position without any special label.
The highlighted comment label is a private session bookmark visible to exactly one user account.
You are the only person who sees the gray "Highlighted comment" tag. YouTube generates this marker at the browser level when you click a notification or a timestamp.
No other logged-in user sees it. The comment remains in its native chronological slot for 100% of other viewers.
If you are a creator, you might worry that highlighted comments expose private activity. They do not. The tag is session-bound to your account.
Other users cannot see which comments you have highlighted. YouTube does not publish this data in any public feed or API endpoint.
This privacy model differs sharply from pinned comments. A pinned comment sits at the top of the section for every viewer.
The creator selects it manually. It carries a public thumbtack icon and the text "Pinned by [Channel Name]."
Highlighted comments carry no creator endorsement. Pinned comments carry explicit creator endorsement.
Your comment displays a highlighted label because YouTube auto-generated it when you clicked a notification or manually selected a comment timestamp. The platform appends a unique &lc= parameter to the video URL to lock your view to that specific comment thread.
YouTube highlights comments through two trigger paths: notification clicks and timestamp clicks, both generating a unique URL parameter.
YouTube sends you a notification when someone replies to your comment or likes it. When you click that alert, the platform loads the video and generates the highlighted label.
This happens automatically. You do not toggle any setting. The system creates a deep-link URL with the &lc= parameter to anchor your view.
You can manually trigger a highlighted comment without any notification. Click the timestamp next to any username in the comment section.
The page reloads. The comment jumps to the top of your thread. The URL now contains the &lc= string.
The &lc= parameter is a base64-style identifier that YouTube appends to the standard watch URL. A typical highlighted comment URL looks like this:
youtube.com/watch?v=VIDEO_ID&lc=UgxAUOkuxV60vusASOV4AaABAg
The &lc= segment always appears after the video ID. Removing it strips the highlight and returns the comment to its original position.
YouTube uses this parameter to reorder the thread locally in your browser. It does not modify the global comment ranking.
Not a single competitor documented the exact &lc= URL parameter anatomy. BGR mentioned the letters "lc" in passing but provided no structural breakdown. Filmora showed a screenshot of a URL bar but did not explain the parameter syntax. Linktree described the URL change without specifying the query string format. Business Insider, published in 2019, omitted the parameter entirely. BloggingTips referenced URL copying but ignored the technical mechanism.
Business Insider's 2019 article is missing 6 critical sub-topics that a 2026 user needs:
&lc= URL parameter documentationA pinned comment is a creator-selected public marker fixed at the top of the comment section for all viewers. A highlighted comment is a system-generated private bookmark visible only to the user who triggered it, appended via the &lc= URL parameter. Pinned comments require creator action. Highlighted comments require zero creator action. Top comments require algorithmic engagement signals.
&lc= parameter to video URLThe creator clicks the 3-dot menu next to any comment. A dropdown appears with "Pin" as an option.
The creator selects it. The comment jumps to the top. A thumbtack icon appears.
The text "Pinned by [Channel Name]" displays below the comment. Only one comment can be pinned per video.
Pinning a new comment replaces the previous one.
The user clicks a notification or a timestamp. YouTube reloads the page.
The &lc= parameter appears in the URL. The gray "Highlighted comment" label renders above the username.
No creator action occurs. No other viewer sees the label.
YouTube ranks comments by engagement velocity. Like count carries the heaviest weight.
Reply count and reply depth contribute secondary signals. The algorithm updates rankings in near-real-time.
A top comment can lose position if a competing comment gains likes faster.
You remove a highlighted comment by deleting the &lc= parameter and all characters after it from the video URL in your browser's address bar, then pressing Enter to reload the page. Removing a highlighted comment takes 10 seconds and requires only URL editing in the browser address bar.
Step 1: Locate the &lc= parameter in your browser address bar.
Look for the string &lc= followed by a base64-style identifier. It appears after the video ID.
Step 2: Click the address bar. Highlight the &lc= segment and every character to the right of it.
Delete this entire section. Do not delete the video ID or any parameters before &lc=.
Step 3: Press Enter. The page reloads without the highlight parameter.
Step 4: Scroll to the comment section. Verify the gray "Highlighted comment" label is gone.
The comment now sits in its original chronological position.
The YouTube iOS and Android apps do not expose the address bar for manual URL editing.
You cannot remove a highlighted comment inside the native app. You have two options.
Open the same video in your mobile browser. Edit the URL there.
Or force-close the YouTube app. Reopen it and navigate to the video fresh.
The highlight does not persist across app restarts. The &lc= parameter is session-bound. If you want to view YouTube comments anonymously, use our YouTube Comments Viewer to browse comments without signing in or revealing your identity.
Yes. You can share a highlighted comment URL by copying the browser address bar after clicking a comment's timestamp. Anyone who opens that exact link sees the same video with the same comment highlighted at the top of their thread. A shared highlighted comment URL is a direct deep-link that anchors any recipient to a specific comment thread using the &lc= parameter.
Click the timestamp next to any comment username. The page reloads.
The address bar now contains the &lc= parameter. Copy the full URL.
Paste it into any message, email, or social platform.
The recipient opens the link. YouTube loads the video.
The highlighted comment appears at the top of their comment section. The gray label renders above the username.
The recipient sees exactly what you saw. The &lc= parameter locks the view to that thread.
Share a funny reply without screenshotting it. Reference a specific comment in a debate or analysis.
Bookmark a thread for later review. Send a creator a direct link to a bug report or feature request in their comment section.
Recipients must have a YouTube account to view the comment context properly.
If the comment is deleted before they open the link, the highlight fails. The video loads but the comment is absent.
If the comment is hidden by the creator or flagged by YouTube's moderation system, the &lc= parameter redirects to the standard comment section without the highlight.
A highlighted reply on YouTube is a system-generated gray label that anchors you to a specific reply within a nested thread. YouTube triggers this variant when you click a notification about a reply to your comment, appending the same &lc= parameter but targeting the sub-thread instead of the parent comment. A highlighted reply is a nested-thread bookmark, not a top-level comment highlight.
YouTube operates two distinct highlight labels. The first is "Highlighted comment." The second is "Highlighted reply."
A highlighted reply activates only through reply notifications. You receive an alert when someone replies to your comment. You click it.
YouTube loads the video. The reply appears nested under the parent comment. The gray label reads "Highlighted reply."
This differs from a highlighted comment in placement. A highlighted comment jumps to the top of the entire section. A highlighted reply stays nested under its parent.
The URL parameter mechanism is identical. The &lc= string still appends to the video URL. The parameter targets the reply ID instead of the parent comment ID.
You cannot trigger a highlighted reply by clicking a timestamp. Timestamp clicks only highlight parent-level comments.
No. A highlighted comment is an automated navigation feature generated by your own click action. It does not indicate that the video creator has seen, liked, or endorsed your comment. A highlighted comment is a system bookmark for your eyes only; only a pinned comment represents creator acknowledgment.
This is the most common misconception I found during my SERP audit. Users consistently misinterpret the gray label as creator recognition.
A live Quora thread asks: "When you get a highlighted comment on YouTube does that mean that the creator who made the video noticed you?" This exact question appears in SERP position 3 for this query cluster.
The answer is no. YouTube generates the highlight when you click a notification or timestamp. The creator receives a standard notification.
They do not control the highlight. They cannot see which comments you have highlighted. The label is private to your session.
Only a pinned comment signals creator notice. The creator must manually select that comment. They must click the 3-dot menu. They must press "Pin."
A pinned comment displays to all viewers. It carries the text "Pinned by [Channel Name]." A highlighted comment displays to one viewer. It carries no creator name.
Author
Youtube Toolkit Team is a Digital Creator & YouTube Growth Specialist from the Netherlands
As Youtube Toolkit’s lead content writer, he transforms complex technical topics into engaging and helpful guides. His goal is to empower creators, coders, and marketers through clear and actionable content.
With 20+ years of experience in the digital ecosystem, Lucas specializes in bridging the gap between sophisticated technical architecture and practical end-user application. Whether it's deep-diving into YouTube SEO or exploring new SaaS integrations, his writing is designed to deliver immediate value.
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