See exactly how your LinkedIn post will look in the feed before you publish. Live mockup with see more truncation, desktop and mobile toggle, and a real action bar.
Fill in your info and the preview updates live.
0 / 220 chars
0 / 3,000 chars
Your Headline
Your post text will appear here...
This tool shows you how your post looks. But if you are still staring at an empty text box before you get here, the harder problem is writing the post itself. Platforms like Lifast draft ready-to-publish LinkedIn posts from your product, audience, and goals, so you spend your time refining and previewing rather than writing from scratch every single day.
Most LinkedIn users write their post in the composer and hit publish without ever seeing what their audience will see. The problem: line breaks look different in the feed than they do while you are typing. A post that looks well-structured in the composer can render as a dense block of text in the feed, especially on mobile where shorter lines mean more wrapping.
A preview also forces you to read your post through the reader's eyes rather than the writer's. You notice where the energy drops, where a sentence runs too long, and whether the see more cutoff lands in a place that creates curiosity or just cuts off mid-thought. Catching these issues before you publish costs you thirty seconds. Catching them after costs you reach.
LinkedIn collapses feed posts at roughly 210 characters and shows a see more link. That collapse point is the single most important line break in your post because it determines whether a reader engages with the full post or scrolls away. The text before the cutoff is your hook. The text after it is your reward for earning the click.
A strong hook before the cutoff does one of four things: states a counterintuitive claim, opens a story at a moment of tension, asks a question that names a specific pain, or drops a number that stops the scroll. A weak hook restates your job title, thanks someone, or explains what the post is going to be about. Use this preview tool to check exactly where your text cuts off and whether that moment earns the see more tap.
Over 60 percent of LinkedIn sessions happen on mobile devices. That means every formatting choice you make should be tested against a narrow viewport first. Long dense paragraphs that look fine on a 27-inch monitor become walls of grey text on a phone. Short paragraphs of one to three lines, with a blank line between them, are far easier to read on mobile and consistently outperform dense text in engagement rate.
Numbered lists and line-broken sentences also improve mobile readability. A sentence that fills a full desktop line will wrap awkwardly on mobile, often breaking at an unintended word. Writing shorter sentences, and checking them in a mobile-width preview like the one above, helps you catch those awkward breaks before they hurt your reader's experience.
Lifast generates LinkedIn posts engineered to hook readers in the first 210 characters, so your see more rate, engagement, and reach all compound over time.
Try Lifast Free90 days of consistent posting. No ads.
Everything you need to know about previewing your LinkedIn posts and optimizing them for the feed.
This free tool renders a pixel-faithful mockup of your LinkedIn post in real time. Enter your name, headline, and post text in the inputs above and the preview updates instantly. You can toggle between a desktop width (560px) and a mobile width (360px) to see how your post renders across both viewports. The see more collapse behavior is also simulated so you can see exactly where LinkedIn will cut your text.
Yes. The preview collapses your post at roughly 210 characters, the same threshold LinkedIn uses in the desktop feed, and shows a see more link. Click see more inside the preview to expand the full post. If your post is longer than 210 characters, a notice appears at the bottom of the card confirming the cutoff is active and telling you how many characters are hidden.
The mockup closely mirrors the structure and proportions of a real LinkedIn feed post: the avatar, name, headline, meta line, post body, reaction bar, and action buttons. Exact pixel rendering can vary slightly depending on a user's LinkedIn settings, browser, and device, but the tool gives you an accurate enough preview to catch formatting issues, line break problems, and see more cutoff placement before you publish.
Yes. Use the Desktop and Mobile toggle buttons above the preview card. The desktop preview renders at a maximum width of 560px, which matches the LinkedIn feed card on a standard laptop screen. The mobile preview renders at 360px, which approximates the LinkedIn mobile app at a common phone resolution. The difference in width changes how your line breaks fall, which can significantly affect readability.
No. This preview tool runs entirely in your browser. Nothing is sent to LinkedIn, stored on a server, or shared with any third party. Your name, headline, and post text stay on your device and are cleared when you close or refresh the page. You will need to copy your post text and paste it into LinkedIn manually when you are ready to publish.
Posts between 900 and 1,500 characters tend to perform well for storytelling and educational content. Short posts under 300 characters can work for punchy one-liners or provocative questions. Long posts above 2,000 characters require a very strong hook to hold attention but can build significant credibility when the topic merits depth. Use this preview to check whether your hook earns the see more click, which is the key engagement signal regardless of total length.