LinkedIn text formatting: bold, italics, line breaks and bullets

LinkedIn posts have no bold, italic or underline buttons. The post box takes plain text, line breaks, emoji, mentions and hashtags, and LinkedIn’s formatting tools (bold, italics, lists and quotes) exist only in its article and newsletter editor. The “bold” you see in feed posts comes from formatter tools that swap each letter for a look-alike Unicode symbol, such as 𝐁𝐨𝐥𝐝. It looks right, but screen readers can read those symbols out by name, each one takes two units in SocialHelper’s LinkedIn count, and Unicode says they aren’t meant for ordinary text.

This guide covers what LinkedIn supports natively, how the bold trick works and what it costs, measured with SocialHelper’s counter, and how to format a post that reads well without it.

Can you bold text in a LinkedIn post?

Not natively. LinkedIn’s help page for posts lists what the post box offers: emoji, photos and videos, events, polls, documents and a few more, in posts of up to 3,000 characters (LinkedIn Help: Post and share updates). There are no text styles, but articles are different. In the article editor “you can change the style, bold or italicize any text, add ordered or unordered lists, add blockquotes, or add a divider” (LinkedIn Help: Write and publish articles). You can’t write articles in the LinkedIn mobile app, though.

Posts sent through LinkedIn’s API are plain too. little is the text format LinkedIn’s Posts API uses for a post’s text, and it supports text, mentions and hashtags while reserving characters including *, _ and ~. “All reserved characters need to be escaped with a backslash” (little Text Format, Microsoft Learn). So Markdown such as **bold** isn’t formatting on LinkedIn. It has to be escaped just to show up.

How LinkedIn “bold text” works

Mathematical alphanumeric symbols are letters and digits in fixed styles, such as bold, italic and script, that Unicode added for mathematical notation. Formatter tools replace each ordinary letter with its styled twin, so 𝐁 isn’t a bold B but a different character, MATHEMATICAL BOLD CAPITAL B (U+1D401). Unicode’s report on mathematics is plain about their purpose: “The characters in this block are intended for use only in mathematical or technical notation; they are not intended for use in non-technical text” (Unicode Technical Report #25).

Here is one line in each common style, with the name of its first letter and its length in SocialHelper’s LinkedIn counter.

Only the letters change, and the spaces and the colon stay plain, which is why the styled lines come out a little under double.

What fake bold costs

• Screen readers. Scope, the UK disability charity, warns that screen readers “may skip them entirely or read something irrelevant to the user”, such as reading a styled letter as “mathematical sans-serif script t” (Scope). Someone listening to your post may hear symbol names instead of your headline.
• Length. Each styled letter has a code point above U+FFFF, so software that counts UTF-16 code units, as JavaScript does, counts it twice. SocialHelper counts LinkedIn posts that way, so in its count a fully bolded post fits about half as many letters into LinkedIn’s 3,000.
• Search and copying. To software, 𝐥𝐚𝐮𝐧𝐜𝐡𝐞𝐝 and launched are different words. Unicode treats styled letters as compatibility equivalents of plain ones, listing them as “font variants” that normalization turns back into ordinary letters (Unicode Normalization Forms). A search that normalizes text this way finds your bold word, and one that doesn’t, won’t.
• Names and hashtags. A name or hashtag typed in styled letters is a different string from the plain one, so keep them plain.

How to bold text on LinkedIn, if you still want to

1. Write the whole post in plain text first.
2. Pick one to three words worth stressing, such as a short headline or a number. Never a whole paragraph.
3. Paste those words into a Unicode text formatter, copy the styled version and paste it back over the plain words.
4. Check that the post still makes sense if the styled words are read out oddly. Never put a name, a link, a hashtag or your call to action only in styled letters.

“If you want a wide audience to understand your message, avoid using Unicode,” is Scope’s own, stricter advice.

Formatting that works without tricks

• Short paragraphs. LinkedIn keeps your line breaks, so put one idea in each paragraph with a blank line between them. Microsoft’s own example post separates paragraphs with two line breaks.
• Bullets. Start a line with a bullet character such as •, or with an emoji. Through the API, a leading * has to be escaped, as the same example shows.
• The point first. Put what matters in the first line, where people decide whether to read on.
• Capitals, sparingly. One word in capitals is still ordinary letters, so search and counting treat it normally.
• Emoji as signposts. A few at the start of lines guide the eye. Each one usually counts as 2 in UTF-16, like a styled letter.

Formatting posts you send through SocialHelper

SocialHelper sends your text to LinkedIn exactly as you typed it. Before posting, it escapes every character that little reserves, so asterisks, underscores, brackets and @ signs appear as written, and it turns each #hashtag into LinkedIn’s hashtag template so it still links. It counts the text in UTF-16 code units, so a post with styled letters is checked against LinkedIn’s 3,000 at its real length. The LinkedIn character counter shows the same count before you post, and the character limits guide explains why each platform counts text differently.

Frequently asked questions

How do I bold text on LinkedIn?

LinkedIn posts have no bold option. Formatter tools convert words into Unicode bold symbols, which you paste into your post. Use them on a word or two at most, because screen readers may not read them as words. Articles and newsletters have a real bold button.

How do I italicize text in a LinkedIn post?

The same way, with Unicode italic symbols and the same drawbacks, while the article editor has real italics.

Can I change the font of a LinkedIn post?

No, posts show in LinkedIn’s own font. Tools that offer LinkedIn “fonts” swap your letters for Unicode symbols that only look like a different font.

Does bold text count as more characters on LinkedIn?

In SocialHelper’s count, yes: each styled letter counts as 2, so “Big news: we launched” grows from 21 to 38 when bolded.

Does LinkedIn support Markdown?

No. In the API’s little format, the Markdown characters *, _ and ~ are reserved and must be escaped, so they show up as plain characters rather than formatting.

How we checked this

We read LinkedIn’s help pages for posts and articles, Microsoft’s documentation of the little text format, Unicode’s reports on mathematics and normalization, and Scope’s accessibility guide on October 17, 2026. Then we ran a fact check of every quote against them. We measured the styled lines with SocialHelper’s LinkedIn counter and analyzed its LinkedIn integration on October 17, 2026; the lengths in this post are filled in from that code, so they stay current.

If LinkedIn adds formatting to posts, contact us and we’ll update the guide.