How to Preview a LinkedIn Post Before You Publish

To preview a LinkedIn post before publishing, paste your draft into a preview tool that renders it as a feed card — including where the "see more" cut falls — and check it at both desktop and mobile widths. LinkedIn's own composer will not do this: it shows you a text box, not a post.

That gap matters because several things change on the way from box to feed. Line breaks get eaten, links become previews, a 3,000-character post collapses after a couple of hundred characters, and images get cropped to a container you never saw. None of it is exotic. All of it is invisible until you publish.

Where does LinkedIn cut off a post?

A feed post collapses behind "see more" after roughly 210 characters on desktop. Inside the mobile app the cut lands much earlier — around 140 characters. Those are approximations, not a published API: the exact point moves with line breaks, screen size and the app version. Treat them as a planning constraint rather than a guarantee.

The consequence is simple and unforgiving. Your first two lines are the entire advert for the rest of the post. If they contain a warm-up sentence about how you have been reflecting lately, the advert is for nothing.

The full post limit, for reference, is 3,000 characters. Almost nobody needs them.

What changes between your draft and the feed

A two-minute pre-publish pass

1. Step 1

   Paste the draft into a preview

   Open our Post Preview and paste the whole thing in. It renders a feed card and marks where the collapse is likely to happen.

2. Step 2

   Read only the visible part

   Cover everything below the "see more" line and ask whether you would tap. If not, move your strongest sentence up and delete the runway above it.

3. Step 3

   Switch to mobile

   The cut is far earlier and the line count roughly doubles. Most posts are read here, so this is the view that decides.

4. Step 4

   Check the paragraphs survived

   One idea per paragraph, blank lines intact. If two paragraphs have fused, retype the break rather than pasting again.

5. Step 5

   Add the image, then check the crop

   Upload it in the preview and confirm the subject and any text are still there at feed size. If it needs squinting, it needs re-exporting.

6. Step 6

   Look at the counts

   Characters, lines, emojis, hashtags and links. Nothing here is a rule, but numbers that surprise you usually mean the post is doing something you did not intend.

What a preview cannot tell you

It cannot tell you whether the post is any good. It cannot predict reach, and anyone selling you a tool that claims to is selling you a horoscope. It also cannot reproduce LinkedIn's private layout engine exactly — different devices, fonts and app versions all shift the collapse point a little.

What it can do is remove the mechanical failures: the wasted hook, the welded paragraphs, the styled text that broke, the image cropped through someone's head. Those are the ones that make a good post look careless, and they are entirely avoidable.

Pre-publish checklist

• First line works as the whole advert for the post
• Checked at both desktop and mobile widths
• Every intended blank line survived the paste
• At most one styled phrase, and not on a key term
• Link preview is the one you want, or the link is in the comments deliberately
• Hashtags at the end, and few of them
• Image subject and text legible at feed size
• Closing line gives someone a reason to reply

Do it every time, it takes two minutes

This is not a workflow so much as a habit. Draft wherever you like, paste it into the preview, fix the three things it shows you, publish. The cost is a couple of minutes; the alternative is finding out from your own feed that the hook was buried under an apology for not posting more often.