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Social media post preview

Write a caption, add a photo if you like, and see how Instagram, Facebook, LinkedIn, X, Threads, Pinterest and Bluesky show them in the feed: how each frames the photo, and any text past its limit.

Photo (optional)

Your text and photo stay in your browser. Nothing is sent to Unisenda.

How your post looks in each feed

  • Instagram

    Instagram posts need a photo or video.

    Your caption will appear here.

  • Facebook

    Your caption will appear here.

  • LinkedIn

    Your caption will appear here.

  • X

    Your caption will appear here.

  • Threads

    Your caption will appear here.

  • Pinterest

    Pinterest posts need a photo or video.

    Add a Pin title to see how much of it shows.

    The description, your caption, isn't shown in Pinterest's home or search feed.

  • Bluesky

    Your caption will appear here.

Only Pinterest says where its feed cuts text: about the first 40 characters of a title. The other networks don't publish where their … more link starts, so their cards show the whole caption. Put the point first. TikTok and YouTube Shorts take videos, so they aren't shown here.

What the preview shows

  • The photo in each feed's frame, the same frames Unisenda's own previews use. Instagram takes 4:5 to 1.91:1 from apps, LinkedIn shows 3:1 to 4:5, X shows 2:1 to 3:4 in full, and Pinterest may cut off Pins taller than 2:3. Facebook, Threads and Bluesky publish no such rule, so their frames follow what their feeds showed when we checked in October 2026.
  • Text past a network's limit, marked where it starts and counted the way each network counts, as in the caption length checker.
  • Where a feed cuts text short: only Pinterest says where, for Pin titles. The other cards show the whole caption.
  • In Unisenda, each account gets its own caption and crop, and the composer shows a preview for every network as you write.

For the numbers behind the cards, see the guides to character limits and image sizes.

Questions people ask

Is my caption or photo uploaded?

No. The preview runs in your browser and nothing is sent to Unisenda. If you choose to open the caption as a draft in the free demo, it is handed over inside your browser and kept there as a demo draft.

Where does Instagram cut a caption with … more?

Instagram doesn't publish a number, and neither do Facebook, LinkedIn, X, Threads or Bluesky, so the preview doesn't guess one. Put the point in the first line, since that's what people see before they decide to read on.

Why does Pinterest show only the start of my title?

Pinterest says that, depending on the device, only about the first 40 characters of a title may show in feeds, or 30 in Chinese, Japanese, Korean, Arabic and other double-byte languages. Its feeds don't show the description at all.

Why aren't TikTok and YouTube here?

Unisenda posts videos to TikTok and YouTube Shorts, and this preview is for photo and text posts. The caption length checker counts a TikTok caption or a YouTube title and description.

Does it look exactly like each app?

No. The cards are plain on purpose. They show how each feed frames the photo and how much of the text fits, not a copy of each app's screen.

Sources

Checked on 24 October 2026. Networks change their rules, so check the source before you rely on a number.

  1. Meta for Developers: IG User Media
  2. Meta for Developers: Page Photos
  3. LinkedIn Help: Share photos
  4. X Help Center: Posting photos or GIFs
  5. Meta for Developers: Threads API overview
  6. Pinterest Help: Review Pin specs
  7. Bluesky: photos up to 2 MB and 4000 × 4000
  8. Pinterest Business Help: Review ad specs
  9. Instagram Help Center: Use hashtags
  10. LinkedIn Help: Post and share updates
  11. X Developer Platform: Counting characters
  12. Meta for Developers: Threads posts
  13. Bluesky: post record format

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