LinkedIn post formatter

LinkedIn posts have no native bold, italic or underline. The composer options LinkedIn lists on its help page are emoji, media, events, polls, documents and scheduling, and the help page that once said it outright, "no way to italicize, underline, or bold text in any area", has since been removed. What this tool produces instead are look-alike Unicode symbols from the Mathematical Alphanumeric block: they survive a paste into the post editor, but screen readers either skip them (NVDA, VoiceOver, Narrator) or spell them out letter by letter (JAWS), so use them sparingly and never on a name or a keyword.

Line breaks and bullet characters are pasted as-is; the tool only tidies them. Where LinkedIn documents nothing about how they render, this page says so rather than guessing.

Everything here runs in your browser. Nothing you type is sent to us or anyone else, there is no signup and no email gate.

Select a word or a line and press a button to change just that part. With nothing selected, the button applies to the whole post.

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Not real bold or italic. The style buttons swap your letters for look-alike characters from Unicode's Mathematical Alphanumeric Symbols block. The Unicode 17.0 core specification (section 22.2.2) says they "should not be used to represent styling of nonmathematical text", and the W3C MathML 3.0 specification (section 7.5) warns of "problems for searching, restyling (e.g. for accessibility)". In Adrian Roselli's 2025 tests, NVDA, VoiceOver and Narrator did not announce the styled words at all, and JAWS read each letter individually. Use them sparingly, never for names or keywords, and keep a plain-text version of any line that matters.

PreviewHow the characters read once pasted
Your post appears here as you type.

Counted against 3,000, the post limit LinkedIn states on LinkedIn help a528176. Each styled letter is counted as one character here; LinkedIn does not document how it counts them, so a heavily styled post may count differently in the composer. Nothing you type leaves this page.

What LinkedIn documents, and what it does not

Green is stated on a LinkedIn page. Amber is not documented by LinkedIn anywhere we could find, so treat it as an observation to check in your own feed.

  • DocumentedPost length: 3,000 characters. Stated on LinkedIn help a528176 and a522483. Past that, LinkedIn points you to an article, which allows 125,000.
  • DocumentedNo bold, italic or underline in a post. The composer option list on a528176 has no text style, and the now-removed page Formatting Text or Adding Links (archived copy from July 2024) said there was "no way to italicize, underline, or bold text in any area". Articles do have real formatting (a522427), so if the formatting matters more than the feed, write an article.
  • Not documented, observationWhether blank lines collapse. LinkedIn says nothing about runs of blank lines. Fix line breaks leaves exactly one blank line between paragraphs, which reads the same whether or not LinkedIn collapses longer runs.
  • Not documented, observationWhich bullet characters render. The six offered here are ordinary Unicode characters with names a screen reader can announce, not maths symbols. Whether each one looks identical in every LinkedIn app is something to check in your own feed; LinkedIn publishes no list.
  • Not documented, observationWhere the "see more" fold falls. Third-party tests report about 210 characters or three lines on desktop and fewer characters on mobile. LinkedIn publishes no figure, so the marker in the preview is a guide, not a rule.
  • Not documented, observationHow many hashtags a post may carry. LinkedIn publishes no number, and the help page that covered hashtags has been removed. Any figure you see is someone's testing, not LinkedIn's rule.

Sources

LinkedIn help pages this page relies on. Where LinkedIn publishes nothing, the page says so instead of inventing a figure.

  1. Post and share updates (LinkedIn help a528176). States the 3,000 character post limit. Its list of composer options (emoji, media, events, polls, documents, scheduling) has no bold, italic, underline or list control.
  2. Formatting Text or Adding Links (archived LinkedIn help a544890, Wayback capture of 2024-07-29). Said "There's currently no way to: Add bullets in discussions or updates. Italicize, underline, or bold text in any area." The live page has since been removed from LinkedIn help.
  3. Differences between posting updates and publishing articles (LinkedIn help a522483). 3,000 characters for a post, 125,000 for an article.
  4. Write and publish articles on LinkedIn (LinkedIn help a522427). Articles, unlike posts, have real formatting: "bold or italicize any text, add ordered or unordered lists, add blockquotes, or add a divider".
  5. Unicode 17.0 core specification, chapter 22, section 22.2.2 (Mathematical Alphanumeric Symbols). "Characters from the Mathematical Alphanumeric symbols block should not be used to represent styling of nonmathematical text."
  6. W3C MathML 3.0, section 7.5 (Mathematical Alphanumeric Symbols). Using them for styled prose "would create problems for searching, restyling (e.g. for accessibility), and many other kinds of processing."
  7. Adrian Roselli, Don't Use Fake Bold or Italic in Social Media (2025). Screen reader tests: NVDA, VoiceOver and Narrator do not announce the styled words; JAWS announces each letter individually.

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