LinkedIn Character Limits 2025: Every Field Explained

This guide covers every LinkedIn character limit in 2025, explains what actually gets truncated and where, and gives you the strategy to maximise each field. Use our free LinkedIn character counter to check any field in real time as you write.

LinkedIn Post Character Limit: 3,000 Characters

LinkedIn posts allow up to 3,000 characters — roughly 450–550 words. That's substantial room for storytelling, case studies, lessons learned, and long-form opinion pieces. LinkedIn's algorithm actively favours posts that keep readers engaged, and longer posts with strong hooks consistently outperform short, thin content on the platform.

The critical number, however, is not 3,000 — it's 210. That's how many characters are visible in the feed before LinkedIn collapses the rest behind a "...see more" link. Your opening 210 characters are your headline, hook, and reason to read on. If those first two or three lines don't earn the click, the remaining 2,790 characters go unread.

Research on LinkedIn engagement consistently shows that posts between 800 and 1,500 characters — long enough to deliver genuine value, short enough to read in a single sitting — receive the highest engagement rates. Posts under 300 characters often feel thin. Posts over 2,000 characters can perform excellently, but only when every section earns the reader's continued attention.

LinkedIn Headline Character Limit: 220 Characters

Your LinkedIn headline is the single most-read piece of text on your profile. It appears under your name in search results, on every comment you leave, in connection request previews, and at the top of your profile page. LinkedIn gives you 220 characters to use — far more than most people do.

Here's what most professionals get wrong: they write their job title and stop. "Senior Marketing Manager at Acme Corp" uses about 38 characters. That leaves 182 characters of valuable real estate unused.

The smart approach is to use your headline as a value proposition: who you help, what you help them achieve, and what makes you the right person. For example: "Helping B2B SaaS companies reduce churn through retention-focused email strategy | 8 years | Ex-HubSpot" uses 102 characters and communicates far more than a job title alone.

One important truncation to be aware of: on mobile LinkedIn search results, only approximately 70 characters of your headline are visible. This means your most important keyword — whether that's your job title, specialisation or target audience — must appear within those first 70 characters.

LinkedIn About Section: 2,600 Characters

The About section (formerly called the Summary) gives you 2,600 characters to tell your professional story. It's the longest free-text field on your profile and, when written well, is the section that converts profile visitors into connection requests, job enquiries or client leads.

The truncation point here is 300 characters. That's what visitors see on your profile before they need to click "see more." Most visitors decide whether to expand your About section based on those first three lines — which means your opening sentence needs to be your strongest.

A common mistake is starting with "I am a passionate professional with over 10 years of experience..." This opening sounds like every other About section and does nothing to earn the "see more" click. Instead, start with the specific value you create: "I help early-stage SaaS companies build content engines that generate leads without paid ads" is 89 characters and immediately communicates who you serve and what you deliver.

LinkedIn Connection Request Limit: 300 Characters

When sending a connection request with a personalised note, you have 300 characters — roughly 50 words. This is intentionally tight: LinkedIn wants connection requests to be genuine, not mass-templated outreach.

The data on connection requests is consistent across sales and recruiting research: shorter, more specific notes get higher acceptance rates than longer, more generic ones. A note that references something specific — a recent post they wrote, a mutual connection, a shared experience — consistently outperforms a polished but generic pitch, even when the generic pitch uses more characters.

Under 150 characters is generally the sweet spot. Something like: "Hi Sarah — your post on retention metrics last week was excellent. Would love to connect and follow your work." is 109 characters and feels personal rather than templated.

LinkedIn InMail Character Limits: 200 + 2,000

LinkedIn InMail — the paid messaging feature that lets you message anyone on LinkedIn regardless of connection — has two fields: a subject line (200 characters) and a body (2,000 characters).

The subject line is by far the more important of the two. It's the first — and sometimes only — thing the recipient reads. Generic subject lines like "Exciting Opportunity" or "Quick Question" are so common they've become invisible. Specific subject lines that reference something real about the recipient perform significantly better: "Re: your Series A announcement — a thought on your hiring challenge" is 68 characters and shows you've done your research.

For the body, despite a 2,000-character limit, InMails under 400 characters consistently outperform longer ones. The reason is simple: busy professionals skim. A short, specific message with a single clear ask is far more likely to receive a reply than a detailed, well-crafted case for why they should respond.

Company Page Character Limits

If you manage a LinkedIn Company Page, these are the key limits to know when writing or updating your page content:

The company description's truncation point of ~160 characters is particularly important for brand pages. Those 160 characters appear in LinkedIn search results and in the "About" preview on your page — they're effectively your company's meta description, and should be treated with the same care as an SEO snippet.

Complete LinkedIn Character Limits Reference 2025

How to Use Every LinkedIn Field More Effectively

Knowing the limits is the first step. Using them strategically is what separates profiles and posts that get results from those that don't. Here are three principles that apply across every LinkedIn field:

Front-load your most important information. Every major LinkedIn field has a truncation point — the character count at which casual viewers stop reading. Lead with your strongest material. Your key keyword, your most compelling claim, your clearest value proposition — all of these belong in the first 20% of any field.

Write for the truncation point first. Before worrying about the full content of any post, headline or about section, write the truncation point text separately. Ask yourself: if someone only reads this much, do they understand who I am, what I do, and why it matters? If not, rewrite it until they do.

Don't pad to the limit. Longer is not always better. Connection requests over 200 characters often feel like pitch templates. InMails over 400 characters often get skimmed and ignored. Post comments over 300 characters can feel performative. Use as many characters as the content genuinely requires — not one character more.

Frequently Asked Questions

Does LinkedIn count emojis as one character?

Most standard emojis count as 2 characters on LinkedIn (they use Unicode code points outside the basic multilingual plane). Some simpler emojis count as 1. In practice, it's safest to assume emojis cost 2 characters each when planning your post length. Our LinkedIn counter counts them accurately in real time.

What happens if I exceed the LinkedIn post limit?

LinkedIn prevents you from posting content that exceeds 3,000 characters — the post button greys out and an error appears. Unlike some platforms, LinkedIn does not allow you to submit and truncate automatically.

Do hashtags count towards the LinkedIn post character limit?

Yes. Every character in a hashtag — including the # symbol — counts towards your 3,000 character limit. LinkedIn recommends using 3–5 relevant hashtags per post for maximum reach.

How does LinkedIn character count compare to other platforms?

LinkedIn's 3,000 character post limit is significantly more generous than Twitter/X's 280 characters, comparable to Instagram's 2,200 character caption limit, and far less than Facebook's 63,206 character limit. For ad copy, see our Google Ads character counter for comparison.

Has LinkedIn changed its character limits recently?

LinkedIn has made incremental adjustments to character limits over the years. The current limits listed in this article are accurate as of June 2025. We update this guide whenever LinkedIn announces changes.