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Facebook post preview

Free Facebook Post Preview

Facebook folds at around 477 characters on desktop and considerably sooner on mobile, where most people actually read. Those two different cut points are the thing this preview exists to show you.

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  • Shows the desktop and mobile fold separately

  • Renders the link card from your page tags

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All about the Facebook post preview

Two folds, and the smaller one matters more

Facebook shows roughly 477 characters on desktop before the See more link, which is generous compared with Instagram or LinkedIn. Mobile shows considerably less, and mobile is where the overwhelming majority of Facebook browsing happens. Writing to the desktop fold therefore gives you a false sense of how much is visible. The link preview card adds a second thing worth checking, since Facebook builds it from the Open Graph tags on the shared page and no longer lets most pages edit it inline.

What to check before publishing

Formatting failures Facebook will not warn you about.

  • Where the mobile fold falls, since that is where most of your audience stops seeing text.
  • Whether the substance is above it rather than the setup.
  • What the link card headline and image show, both of which come from the shared page.
  • Whether the card has an image at all, because a link with no image performs noticeably worse.
  • How line breaks and emoji affect the visible length, since both consume space.
  • Whether a native post would serve better than a link post, since Facebook distributes native content more readily.

Link cards are set on your website

This is the most common source of confusion with Facebook link posts.

  • The headline, description and image come from the Open Graph tags on the page you are sharing.
  • Facebook removed inline editing of that text for most pages, so a wrong headline has to be fixed on the site.
  • Facebook caches what it fetched, so a recently updated page may still show old content.
  • Facebook provides a debugging tool that forces a re fetch and clears the stale preview.
  • The recommended image size is around 1200 by 630 pixels, which is what most platforms expect.

Who uses this tool

Mostly pages sharing links and local businesses posting details.

  • Businesses sharing articles or product pages where the card is the pitch.
  • Local businesses posting opening hours or offers that need to be visible above the fold.
  • Marketers who noticed their link previews showing the wrong headline.
  • Community managers posting longer updates that get truncated on mobile.
  • Anyone checking a client post before publishing.

Facebook display reference

How much is visible and where the card comes from.

Facebook post display behavior
ElementBehaviorNotes
Desktop foldAround 477 charactersGenerous compared with others
Mobile foldConsiderably soonerWhere most browsing happens
Post limitOver 60,000 charactersEffectively unlimited
Link cardFrom Open Graph tagsSet on your website
Inline card editingRemoved for most pagesFix it on the page
Card cachingYesUse the debugger to refresh
Card image1200 by 630 pixelsMissing images hurt performance
ProcessingIn your browserNothing is uploaded

Facebook redesigns its post layout regularly and truncation points shift. Checked September 2026.

When this is not the right tool

Formatting is rarely why a Facebook post underperforms. Organic page reach has declined substantially, and a well formatted post reaches the same limited audience as a badly formatted one, which the Facebook caption generator covers honestly. The preview also cannot change a link card, since that lives on the shared page and is set with the meta tags generator. To see what comparable pages post and promote, use the Facebook competitor analytics tool.

How teams picture using RepeatPost

“Honestly, the calendar is what sold me. I could see every channel in one view and spot the week we'd gone quiet. Before this I was juggling three spreadsheets and a Slack thread. Now I plan the month on a Monday morning and I'm done by half ten.”

Hannah Whitfield

Marketing Manager

United KingdomJun 14, 2026
“We run social for eleven clients and keeping them separate used to be a genuine anxiety of mine. Workspaces fixed that. Each client sits in their own space, approvals route to the right person, and I've stopped worrying that someone's going to push a dental practice promo to a restaurant account at 6am.”

Marcus Reed

Agency Owner

United StatesJun 29, 2026
“I batch a fortnight of content on a Sunday arvo and then I don't think about it again. Reckon it's saved me a solid day a week. Only gripe is the mobile app still feels a step behind the web version, so I do the actual planning on my laptop. Everything else is spot on.”

Chloe Baxter

Content Creator

AustraliaJul 11, 2026
“I'm handling social for four small brands and writing captions was eating my whole morning. The AI drafts are actually quite usable now. I still rewrite maybe every third one to sound like the client, but starting from something beats staring at a blank box. The hashtag tool alone I'm using daily.”

Ananya Raghavan

Freelance Social Media Manager

IndiaJul 30, 2026
“I sell fabrics and my customers find me on Instagram mostly. Posting used to be whenever I remembered, which was maybe twice a week. Now I sit down every Sunday evening, load up two weeks, and it goes out on its own. Sales have followed. I'd like to see WhatsApp added properly, that's my one ask.”

Chidinma Eze

Small Business Owner

NigeriaAug 18, 2026
“Our team is five people and we were losing posts in Slack threads. Someone would approve something, someone else would tweak it, and nobody knew which version went live. The approval flow sorted that in a week. Fair play, it's the least glamorous feature on the site and it's the one I'd miss most.”

Niamh Gallagher

Social Media Lead

IrelandSep 02, 2026

Frequently Asked
Questions

Around 477 characters on desktop and considerably sooner on mobile. Since most Facebook browsing happens on a phone, the mobile fold is the one worth writing to, and it is much tighter than people expect.

Facebook removed inline editing for most pages and now reads the headline from the Open Graph tags on the shared page. A wrong headline has to be corrected on the website rather than in the Facebook composer.

Facebook caches previews, so an updated page may still display the old headline or image. Facebook provides a debugging tool that forces a re fetch, which is the fastest way to clear a stale preview.

Around 1200 by 630 pixels, the ratio most platforms expect. A link with no preview image performs noticeably worse, so setting one is worth doing even if you never think about the rest of the card.

Content that keeps people on Facebook has long travelled further than content pointing away from it. Where the link is essential, posting the substance natively and putting the link in a comment is a common approach.

Marginally at best. Organic page reach on Facebook has declined substantially, and formatting does not change that. Comments, shares, native video and Groups affect reach far more than where your text folds.

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