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Social Media Post Formatter

Format social posts with Unicode bold/italic/mono/strike, line-break boosters that survive copy-paste, and a clean hashtag block. Works on X / Twitter, Mastodon, Bluesky, Facebook, Threads and Reddit.

What is the Social Media Post Formatter?

Social Media Post Formatter applies Unicode Mathematical-Alphanumeric styles — bold, italic, bold-italic, sans-serif variants, monospace, small-caps, strikethrough and underline — so the formatting survives copy-paste into platforms that strip rich text (X / Twitter, Mastodon, Bluesky, Facebook, Threads, Reddit). It also fixes the most common formatting failure: blank lines that platforms collapse. The 'preserve blank lines' option inserts U+2063 INVISIBLE SEPARATOR on empty lines so the gap renders reliably. A hashtag panel takes a comma-separated list, dedupes and normalises tags (adds `#`, optionally lowercases), and drops the cleaned block at the bottom of the post. Live character / line / hashtag counts and a real-time preview let you tune the post before pasting. Pure functions, no network.

How to use it

  1. Pick a body style — bold, italic, monospace, small-caps and so on.
  2. Toggle 'preserve blank lines' so platforms don't collapse your formatting.
  3. Type your hashtags as a comma-separated list — they get cleaned and prefixed automatically.
  4. Copy the formatted preview and paste into X, Mastodon, Bluesky, Facebook or any other platform.

Benefits

  • 10 Unicode styles (bold / italic / bold-italic / sans-serif variants / mono / small-caps / strike / underline) that survive copy-paste.
  • Blank-line booster using U+2063 INVISIBLE SEPARATOR — fixes Threads / Bluesky / Facebook line-break collapsing.
  • Hashtag block builder with dedupe, lowercase and auto-`#` prefix.
  • Live preview with character, line and hashtag counts.
  • Works on every text-based platform: X / Twitter, Mastodon, Bluesky, Facebook, Threads, Reddit.
  • Persists draft and formatting choices in localStorage for one-click resume.
  • Honest warning when a chosen style (combining marks) may render poorly on some Android keyboards.
  • Runs 100% in your browser — drafts never leave the device.

Frequently asked questions

How can bold text 'survive copy-paste' if platforms strip formatting?

We don't use rich-text markup — we substitute each letter for the Mathematical-Alphanumeric Unicode equivalent (e.g. 'A' → '𝐀'). Those are actual Unicode characters, so they paste unchanged into any platform that supports Unicode (which is essentially everywhere).

Does this work on X / Twitter?

Yes. Bold, italic, monospace and small-caps all render correctly. The blank-line booster also keeps your line breaks intact.

Does the blank-line trick break accessibility?

Screen readers ignore zero-width / invisible characters, so the audio output is unchanged. Visual rendering gets the gap. It's the standard fix used by every social-media scheduling tool.

Will hashtags survive my style choice?

Yes. We only style the body — the hashtag block at the bottom is left as plain text so platforms recognise it and make tags clickable.

Why do some Android keyboards render strike-through poorly?

Combining-character styles like strikethrough require the rendering engine to draw the combining mark over the previous glyph. Some Android keyboards / older Android versions don't draw them at the right offset. The tool warns when you pick one.

Can I bold only part of a post?

Not in this version — the style applies to the whole body. For mixed styling, copy the bold portion separately, then paste the plain part. Or use the LinkedIn formatter, which has separate hook + body style controls.

Is this the same as fancy-text generators?

It shares the same Unicode transforms as our Fancy Text Generator. The difference is the hashtag block, line-break booster and live character counts geared specifically at posting — not just generating one fancy phrase.

Does dedupe handle case differences?

Yes — duplicates are matched case-insensitively. The original casing of the first occurrence is kept.

What about emoji?

Emoji pass through unchanged. The Unicode transforms only apply to ASCII letters and digits — emoji aren't in the Mathematical-Alphanumeric blocks.

Is anything uploaded?

No. All formatting and previewing runs entirely in your browser.

How many characters / hashtags can I include?

There's no tool-side limit, but most platforms cap posts (280 / 500 / 5 000 chars). The character counter helps you stay within whatever platform you're posting to.

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