Cross-platform Post Preview
Type once, preview live on X, LinkedIn, Facebook, Threads, Bluesky, and Instagram side-by-side with truncation and platform character limits.
Type once, preview live on X, LinkedIn, Facebook, Threads, Bluesky, and Instagram side-by-side with truncation and platform character limits.
This free Cross-platform Post Preview from KX Toolkit is part of our all-in-one online toolkit. It runs entirely in your browser, so your data never leaves your device for client-side operations. 100% free, forever - no paywall, no credit card, no trial.
How to use the Cross-platform Post Preview
- Pick the platform you're posting to.
- Paste or write your copy.
- Run the tool - it shows the count, suggestions or formatted text.
- Copy the result and paste it into the platform composer.
What you can do with the Cross-platform Post Preview
- Hit Twitter's 280-character limit while keeping links intact.
- Generate relevant hashtags for Instagram and TikTok.
- Turn plain text into Unicode bold/italic for LinkedIn posts.
- Find the right caption length for each platform.
Why use KX Toolkit's Cross-platform Post Preview
- Browser-based: Works on Windows, macOS, Linux, iOS and Android - no install, no extension.
- Privacy-first: Client-side tools never upload your data; server-side tools delete files right after processing.
- Mobile-friendly: Full feature parity on phones and tablets - not a stripped-down view.
- Fast: Optimised for instant feedback. No artificial waiting screens, no email-gated downloads.
- One hub for everything: 300+ tools across SEO, text, image, PDF, code, color, calculators and more - skip switching between sites.
Tips for the best results
Schedule batches of posts using the character counter side-by-side with your scheduling tool - saves a lot of editing later.
Related Social Media Tools
If you find this tool useful, explore the full Social Media Tools collection or browse our complete tool directory. KX Toolkit is built for marketers, developers, designers, students and anyone who needs a quick utility without signing up for yet another SaaS.
Why does my post get cut off differently on each platform?
Every social network has its own character limit and inline preview length. X allows 280 characters total. Bluesky allows 300. Threads allows 500. Instagram permits 2200 in the caption but only shows about 125 before "more". LinkedIn shows 140 before "see more" out of 3000. Facebook shows around 250 before "See more" out of 63206. The preview matches each platform's real cutoff so you know exactly what readers will see at a glance.
Does the tool actually post to these platforms?
No. It is a preview only. The tool simulates how each platform would display your text so you can pick the best version before posting. Use the Copy button on each card to copy that platform's truncated text, then paste it into the actual app or scheduler. Nothing leaves your browser, and no accounts are connected.
How are hashtags, mentions, and URLs counted?
The tool counts any token starting with # as a hashtag, any token starting with @ as a mention, and any string starting with http:// or https:// as a URL. Each platform card shows totals so you can spot patterns like too many hashtags for X (where 2 to 3 is recommended) versus Instagram (where up to 30 are allowed). The badges update live as you type.
Is my post text saved anywhere?
No. The text exists only in your browser tab. There is no upload, no analytics on the content, and no copy stored on a server. Once you close the tab the draft is gone, so save anything important elsewhere. This is by design so you can paste sensitive announcements, embargoed news, or pre-launch copy without leaks.
What does the colored bar under each card mean?
The bar shows how close you are to that platform's hard limit. Green is comfortable, amber starts at 90 percent, and red appears when you go over the limit. Going over does not crash the preview but the card warns you with a red message stating exactly how many characters need to be cut. Always trim before posting to avoid platform rejections.
Why does Instagram show so few characters before "more"?
Instagram's feed only displays the first one to two lines of a caption (about 125 characters) before adding a "more" link. Even though you can write up to 2200, anything past that cutoff is hidden until someone taps to expand. The hook in the first 125 characters is therefore the most important part of any Instagram post. The preview simulates this exactly.
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