LinkedIn post captions
A LinkedIn post caption is the text you write in the post box, and it can be up to 3,000 characters. Open with the one point you want to make, back it with something from your own work, and end with a question or a next step. To get a first draft, describe the post in the generator below, which is already set to LinkedIn and a professional tone.
Caption generatorUpdated 4 min read
What to put in a LinkedIn caption
LinkedIn is a feed of people at work, so a caption earns attention by being useful or specific. A simple shape that works for most posts:
- The point, in one line. Say what happened or what you learned. "We cut our invoice turnaround from two weeks to three days" beats "Some thoughts on process".
- The detail. Two or three short paragraphs: what you tried, what changed, what you'd do differently. Real numbers only if they're yours and true.
- The ask. A question for the comments, a link to the full write-up, or a plain "If you're hiring for this, message me."
Leave a blank line between paragraphs. Long blocks of text are hard to read on a phone.
LinkedIn's own advice on AI-written posts
LinkedIn published guidance on posts made with AI, and it applies to any caption generator, including ours:
- AI can help you refine wording, proofread or be more concise, but the post should still show your own voice, view and experience.
- LinkedIn asks you to review, edit and approve anything AI helped write. You're responsible for what you post.
- It recommends saying so if you relied heavily on AI and that isn't obvious.
- Generic, repetitive posts without a clear point of view are, in LinkedIn's words, "less likely to be widely distributed". Members can also flag a post with "Seems like AI slop".
So treat a generated caption as a draft. Add the detail only you have: the client's problem, the number from your own dashboard, the thing that went wrong.
Write a draft with the caption generator
Describe your post in a sentence or two: what it's about, who it's for and any facts you want in it. The generator writes three captions in different shapes, such as a hook-first one, a short story and a brief one, each under LinkedIn's 3,000-character limit with a character count. It only uses the facts you give it, so it won't invent results or job titles.
Caption generator
Open the full toolEmoji and hashtags start switched off here, for a plain, professional post. Turn them on if they suit your audience. Add a call to action, such as "Comment with your experience", and the generator works it into the ending.
Post it on LinkedIn
These steps are from LinkedIn Help.
On a computer:
- Click Start a post at the top of your LinkedIn homepage.
- Click the name dropdown to choose who can see the post (Anyone, Connections only or a Group) and who can comment.
- Paste your caption in the What do you want to talk about? box. Add a photo, video, document or poll if you want.
- Click Post, or click the Clock icon to schedule it.
On the mobile app:
- Tap Post in the navigation bar.
- Tap the Anyone dropdown beside your profile photo to set who can see and comment.
- Paste your caption in the Share your thoughts… box.
- Tap Post, or tap the Clock icon to schedule it.
If your caption runs past 3,000 characters, LinkedIn suggests publishing an article instead.
Save it for later or schedule it
Not ready yet? Click Cancel while writing the post, then Save as draft. Drafts sync across your devices and open again the next time you start a post.
To post at a set time, click the Clock icon, pick a date and time, click Next, then Schedule. LinkedIn lets you schedule a post between 10 minutes and 3 months ahead. Events and job posts can't be scheduled.
Before you post
- Read it out loud. If a line sounds like no one you know, rewrite it.
- Check every fact. Names, dates and numbers should match what really happened.
- Tag people only if they're involved and would be glad to be mentioned.
- Cut the first line if it's throat-clearing. Start with the second.
For the banner at the top of your profile, see the LinkedIn banner size guide. For image sizes on other networks, see social media image sizes.
Sources
- Post and share updates, LinkedIn Help, checked 2026-11-02
- Best practices for content created with the help of AI, LinkedIn Help, checked 2026-11-02
- Save a post as a draft, LinkedIn Help, checked 2026-11-02
- Schedule posts, LinkedIn Help, checked 2026-11-02
Questions
What is a good caption for a LinkedIn post?
One that makes a single clear point from your own experience, opens with that point, and ends with a question or next step. Keep paragraphs short so it's easy to read on a phone.
How long can a LinkedIn post be?
Up to 3,000 characters, according to LinkedIn Help (checked November 2026). If you need more, LinkedIn suggests writing an article instead.
What is the 4+1 rule on LinkedIn?
It's an informal rule of thumb some marketers use for their posting mix, and people describe it in different ways. It isn't a LinkedIn rule, and LinkedIn's Help Centre doesn't mention it.
Can I use AI to write LinkedIn captions?
Yes, but LinkedIn asks you to review, edit and approve anything AI helped with, and says posts should reflect your own voice and experience. Use an AI draft as a start, then add what only you know.
What is a good tagline for LinkedIn?
A tagline usually means your profile headline, not a post caption. The bio generator on Liite writes headline ideas within LinkedIn's limit.