# Social Media Post Previewer

Canonical URL: https://offlineutils.com/social-preview
Category: Text & Content
Published: 2026-06-24
Publisher: offlineutils.com
Runs entirely in the browser; nothing entered into the tool is uploaded.

> A Social Media Post Previewer shows your draft post styled like the actual social platform with the platform-specific truncation point marked, so you can see exactly where readers will hit "Show more" before they click — rendered entirely in your browser.

Type a post on the left and the right side mirrors how the same text renders on X (formerly Twitter), LinkedIn, Bluesky, Threads, and YouTube descriptions, complete with the platform's character limit and the precise position where each cuts the preview. Switch platforms with a tab. Includes per-platform character counts, hashtag and link detection, and grapheme-cluster-aware counting so emoji and CJK characters are tallied the same way the real platforms count them.

## Features

- Live preview for X, LinkedIn, Bluesky, Threads, and YouTube descriptions
- Platform-accurate truncation markers ('Show more' / '…more')
- Grapheme-cluster character counting (emoji and CJK count correctly)
- X-style 23-character link counting where applicable
- Hashtag and link detection per platform rules

## Use cases

- Drafting a post that hooks readers before the 'Show more' cut
- Verifying a multi-platform announcement fits every limit
- Checking how an emoji-heavy tweet actually counts on X
- Auditing whether a YouTube description's first 120 characters carry the hook

## How to use it

1. **Draft your post** — Type into the editor on the left.
2. **Pick a platform** — Switch tabs to see X, LinkedIn, Bluesky, Threads, or YouTube.
3. **Check the truncation marker** — The preview shows exactly where the platform will cut your post with 'Show more'.

## When to use it, and when to use something else

- **vs Pasting into each platform's compose box** — use Social Media Post Previewer when you want to see every platform side-by-side without context-switching. Use Pasting into each platform's compose box when you are about to publish and want the live editor.
- **vs buffer.com / hootsuite.com preview** — use Social Media Post Previewer when you want a free, no-signup, offline preview. Use buffer.com / hootsuite.com preview when you also need scheduling and publishing.

## Frequently asked questions

### Why does my character count differ from another tool?

Many tools count UTF-16 code units, which double-counts emoji and many non-Latin characters. We use Intl.Segmenter to count grapheme clusters, matching how X, LinkedIn, and Bluesky display their counters.

### Where does each platform truncate?

X shows the first ~280 characters before "Show more"; LinkedIn truncates feed posts at ~210 characters before "…more"; Bluesky's limit is 300 graphemes and shows the full post inline; YouTube descriptions truncate at ~120 characters in the preview row. Limits are kept under per-platform constants we update over time.

### Does it count links the way each platform does?

X counts links as 23 characters regardless of length; LinkedIn counts the full URL. We mirror each platform's rule per the active preset.

## Related tools

- https://offlineutils.com/word-counter
- https://offlineutils.com/case-converter
- https://offlineutils.com/lorem-ipsum