Platform-Specific Text & Bio Formatter
Type your post or bio once and watch it measured against every platform's character limit at the same time — no more switching between separate counters.
Overview
A caption, post, or bio written for one platform often needs reposting to several others with different character limits — X caps posts at 280, Instagram allows up to 2,200, and LinkedIn up to 3,000. Checking each one separately means retyping or re-pasting the same text into multiple counters.
This tool counts your text once and shows the remaining (or over) allowance for X, Instagram, Threads, and LinkedIn side by side, plus an advisory hashtag count. Select any text in the editor and apply Unicode bold, italic, or monospace styling — since most social platforms don't support real rich text, this is the only way to get styled-looking text in a plain caption or bio field.
Examples
Checking a caption against every platform at once
A 320-character product announcement
Shows '40 characters over the 280-character limit' for X, while Instagram, Threads, and LinkedIn all show remaining allowance
How It Works
- Type or paste your text into the editor.
- Select any portion of it and click Bold, Italic, Bold Italic, or Monospace to apply Unicode character styling in place.
- Check the character count against each platform's limit on the right.
- Optionally click 'Sanitize line breaks' to preview a version with normalized line endings and collapsed blank lines.
Use Cases
Cross-posting one caption to several platforms
Write once, then see immediately which platforms your text fits and which need trimming.
Adding styled emphasis to a bio field
Apply Unicode bold or italic styling to a name or keyword in a bio field that doesn't support real rich text formatting.
Tips
- Unicode-styled text counts as more characters on some platforms' own counters than the visual character count shown here — double-check on the target platform before posting if you're near a limit.
- There's no true italic form for digits in Unicode, so numbers pass through unstyled when you apply Italic.
FAQ
No. Counting and styling both happen entirely in your browser.
No — it's shown as advisory information only. No major platform enforces a strict maximum number of hashtags.
It uses real Unicode character codepoints, not fonts or markup, so it renders consistently everywhere a font supports the Unicode Mathematical Alphanumeric Symbols block — a small minority of very old or limited fonts may show blank boxes instead.