> **The idea, in one sentence.** You **don't need to write a single post** to grow on LinkedIn: by commenting on the right creators, at the right time, you borrow their audience and win visibility, network and clients. This guide is a **step-by-step method**, backed by our first-party LinkHub data. Third-party figures (comment weight, +29% reach) are estimates from cited, dated studies — flagged as such.

## Key takeaways

- **A post without an audience falls flat; a comment borrows a big creator's audience.** In raw reach, the post crushes the comment (**1,607 vs 35 median impressions**) — but the post **requires a network** to distribute, the comment **requires none**. *(see [comment vs post](/en/blog/commentaire-vs-post-linkedin))*
- **Volume is accessible**: **20-49 comments/day** generate on average **~4,587 impressions/day** (and total reach never declines with volume). *(see [how many per day](/en/blog/combien-de-commentaires-par-jour-linkedin))*
- **The most underrated lever: who you comment on.** A top-10% creator earns **~3.4x more** impressions per comment than the median. *(see [who to comment on](/en/blog/sur-qui-commenter-linkedin))*
- **And timing**: commenting within the **first 30 minutes** earns **~3.8x** more impressions than after 24h. *(see [when to comment](/en/blog/quand-commenter-sur-linkedin))*
- ⚡ **Bonus:** commenting **also boosts your posts** if you write them (~**+29%** reach, [LinkPost study](https://www.linkpost.gg/fr/playbooks/linkedin-algorithm-playbook-2026)) — but you are **not required to post** to grow.
- **Honesty:** posting builds authority (E-E-A-T) over time, it's complementary — **but it's not a prerequisite** to get started.

## 1. Why commenting is enough to grow (without posting)

The common belief — "to grow on LinkedIn, you have to publish" — has a blind spot: **a post only exists if it has an audience to distribute it.** Without an established network, the [LinkedIn algorithm](/en/blog/algorithme-linkedin-2026) shows your post to 2-5% of your contacts; if early engagement is low, it dies ([Teract, 2026](https://www.teract.ai/resources/linkedin-comment-strategy-2026)).

The comment flips the equation. When you comment on someone else's post, **you appear in front of the audience that creator has already gathered** — with no upfront algorithmic filtering, and without having to build that audience yourself. That is the core difference, measured in our data:

| Criterion | **POST** | **COMMENT** |
|---|---|---|
| **Median reach / unit** | **1,607 impressions** | **35 impressions** |
| **Audience required** | Yes — you need a network that reads you | **None — you borrow the host's** |
| **Time with the tool** | 1-5 min *(LinkPost, estimate)* | **~29 s — measured** *(LinkHub, n = 44,523)* |
| **Repeatable / instant** | Costly, gated by audience | **Yes — no prerequisite** |

**Reading.** Yes, a single post reaches further (×46 at the median). But that reach has **two conditions**: having an audience, and investing writing time. The comment caps lower per unit — yet it happens in **~29 measured seconds** and **requires no audience**. That is precisely what makes it the **best entry door when you start from zero** *(see also [commenting as a beginner, with no audience](/en/blog/commenter-linkedin-debutant-sans-audience))*. For the full numbers of the duel, see [comment or post: what earns more](/en/blog/commentaire-vs-post-linkedin).

## 2. Step 1 — Target the right creators (the #1 lever)

At equal effort, **who** you comment on swings your visibility by a factor of 1 to over 40. Across 4,861 analyzed creators, the **median** creator earns **36 impressions per comment**; a **top-10% creator earns 124 (~3.4x)** and a **top 1%, 357 (~10x)**. Same comment, same quality, same window — placed under the right creator, it's seen **3 to 10x more**.

The right creator isn't necessarily the biggest by followers. It's the one who combines:

- **Niche audience**: their followers = your [ICP](/en/blog/icp-commentaire-linkedin) (prospects, peers, decision-makers). An off-topic top 1% is worth less than a highly engaged niche creator.
- **Real engagement**: an account with 8,000 active followers often beats one with 80,000 passive ones. Reach follows engagement, not raw count.
- **Consistency**: a creator who posts often gives you more chances to comment early.

To identify these targets without guessing, LinkHub includes an **[AI profile recommendation](/en/features/ia-recommandation-profils)**: it analyzes your profile and activity to infer your **ICP**, then searches **100,000+ LinkedIn profiles** for those with the **best ROI for your niche** — not just the biggest accounts. Details and data in [who to comment on LinkedIn](/en/blog/sur-qui-commenter-linkedin).

## 3. Step 2 — Comment early (the 0-30 min window)

The right creator isn't enough: you have to be **there when the post goes out**. Across 261,137 real comments, a comment posted within the **first 30 minutes** generates **391 impressions on average**, versus **104 after 24h** — that is **~3.8x more** (and ~4.3x at the median). The decline is steady: every hour of waiting costs visibility.

The reason: a post gets most of its reach in its first hour. Commenting then means **exposing yourself to the host post's audience peak**. Early comments also get more replies → a thread forms, and LinkedIn distributes beyond the author's audience.

The practical problem: you can't watch the native feed continuously. That's the role of **[personalized feeds](/en/features/feeds-personnalises)** — gather your target creators to see their posts **the moment they go live**, without scrolling. You comment within the half hour, without missing the golden window. Full numbers in [when to comment on LinkedIn](/en/blog/quand-commenter-sur-linkedin).

## 4. Step 3 — Hold the volume (without spending your whole day)

Once the right targets are gathered and the window is mastered, the last lever is **volume**. And the good news is it's accessible: in our data, **total reach climbs without ever declining** with volume, from **581 impressions/day** (1-7 comments) to **11,737/day** (100+).

The reach/time sweet spot sits at **20-50 comments/day**: strong total reach (**~4,587 impressions/day**), still-solid per-comment value (153) and a reasonable time cost. Because the real barrier to volume isn't the algorithm — **it's time**. With LinkHub, a comment takes **~29 s measured**, so 30 comments ≈ **~15 min**. That is what makes 20-50/day sustainable day after day.

This is exactly what LinkHub automates: spotting the right posts as soon as they go out, in the right slot, and writing the right comment with **[personalized AI comments](/en/features/ia-commentaires-personnalises)** (always approved by you). The full volume/reach detail is in [how many comments per day](/en/blog/combien-de-commentaires-par-jour-linkedin).

## 5. Should you really never post?

Let's be honest: **no, the post isn't useless.** Posting builds your **deep authority** (E-E-A-T) over time, your voice, your positioning. The two channels are **complementary**, not competitors.

But two nuances change everything:

- **The post isn't a prerequisite to start.** You can win visibility, network and clients **today** by commenting, without waiting until you have an audience that makes your posts viable.
- ⚡ **Commenting amplifies your posts if you write them.** A daily commenting routine raises your own posts' reach by roughly **+29%** ([LinkPost algorithm study](https://www.linkpost.gg/fr/playbooks/linkedin-algorithm-playbook-2026)) — and warms up your prospects before your messages. The comment competes with none of your channels: it **boosts them all.**

In other words: start by commenting to grow without depending on an audience, and add posting later for authority. The optimal order is **comment first, post second** — not the other way around.

## FAQ

**Can you really grow on LinkedIn without posting?**
Yes. By commenting on the right creators, you borrow their audience without having to build your own. A comment requires **no audience** to be seen (unlike a post), and the volume is accessible: 20-50 comments/day generate on average ~4,587 impressions/day in our data.

**Why does a comment work without an audience, unlike a post?**
A post is distributed to your network; without an established network, it reaches 2-5% of your contacts and dies if early engagement is low. A comment appears in front of the audience **already gathered** by the creator you comment on — you don't have to build it.

**How much time does it take per day?**
Count **~15-25 min/day** for 20-50 comments with LinkHub (a comment ≈ 29 s measured). That's the reach/time sweet spot.

**Should you still post eventually?**
It's not required to grow, but it's complementary: the post builds authority over time, and commenting additionally boosts your posts' reach (~+29%). Recommended order: comment first, post second.

**Who and when to comment to maximize the effect?**
On creators with a strong audience **in your niche** (a top 10% earns ~3.4x the median), and within the **first 30 minutes** after publishing (~3.8x more impressions than after 24h). See [who to comment on](/en/blog/sur-qui-commenter-linkedin) and [when to comment](/en/blog/quand-commenter-sur-linkedin).

## Sources & methodology

- **LinkHub first-party data** — impressions per comment and per post, volume (user-day base), commented creators (`creator_stats_cache`), measured creation time (n = 44,523). See [comment vs post](/en/blog/commentaire-vs-post-linkedin), [how many per day](/en/blog/combien-de-commentaires-par-jour-linkedin), [who to comment on](/en/blog/sur-qui-commenter-linkedin), [when to comment](/en/blog/quand-commenter-sur-linkedin).
- [LinkPost — Algorithm Playbook 2026](https://www.linkpost.gg/fr/playbooks/linkedin-algorithm-playbook-2026) (+29% reach) · [Teract — Comment Strategy 2026](https://www.teract.ai/resources/linkedin-comment-strategy-2026) · [Sprout Social — LinkedIn Algorithm 2026](https://sproutsocial.com/insights/linkedin-algorithm/)
- Find all our studies on the [LinkHub blog](/en/blog).