How to make bold text for LinkedIn
LinkedIn has no bold button in the post composer, the comment box or your profile headline. What you can do is paste in characters that already look bold. This generator turns your words into those characters in 28 styles at once.
- Type or paste your text in the box. Every style updates as you type.
- Copy the style you want. Press its copy button or click its row outside the text (clicking the text itself lets you select part of it). The selected style also shows in the preview so you can see it in a LinkedIn post, a LinkedIn headline or an Instagram profile.
- Paste it into LinkedIn (or Instagram, X, Facebook) with Ctrl+V, or Cmd+V on a Mac. On a phone, long press the text box and choose Paste.
To bold only part of a post, write the post as usual and generate just the words you want to stand out: the first line, a heading or a single key phrase. Paste each piece where it belongs.
How it works: Unicode, not formatting
Unicode, the standard every phone and computer uses to store text, has a block called Mathematical Alphanumeric Symbols. It exists for math notation, where a bold x and an italic x can mean different things, so it holds whole alphabets in bold, italic, script and more. The generator swaps each of your letters for its look-alike. The result is plain text, so it survives copy and paste into any app with no markup to strip out.
We grew from 3 to 30 clients
𝗪𝗲 𝗴𝗿𝗲𝘄 𝗳𝗿𝗼𝗺 𝟯 𝘁𝗼 𝟯𝟬 𝗰𝗹𝗶𝗲𝗻𝘁𝘀
Different styles come from different corners of Unicode, which is why some display everywhere and some do not:
| Styles | Where the characters come from | Example |
|---|---|---|
| Bold, italic, bold italic, script, Fraktur, double-struck, sans-serif, monospace | Mathematical Alphanumeric Symbols (U+1D400 to U+1D7FF) | 𝗕𝗼𝗹𝗱 𝘐𝘵𝘢𝘭𝘪𝘤 𝔉𝔯𝔞𝔨 |
| Small caps, superscript, subscript, upside down | Phonetic letters and modifier letters borrowed from several blocks; some letters have no match | ꜱᴍᴀʟʟ ᶜᵃᵖˢ |
| Bubbles, squares, parenthesized | Enclosed Alphanumerics and its supplement | Ⓑⓤⓑⓑⓛⓔⓢ |
| Full width | Halfwidth and Fullwidth Forms, made for East Asian text | Ｗｉｄｅ |
| Strikethrough, underline, slashed | Your normal letters, each followed by a combining line character | U̲n̲d̲e̲r̲ |
The first row is the safe choice for LinkedIn: that block is widely supported on current phones and computers. The further down the table, the more a style depends on the fonts installed on the reader's device.
Why some styles are hidden, and accented letters
Before showing the list, the tool checks which styles your own device can draw and tucks the failures behind "Show them anyway", since they often display fine on the phones most readers use. The styled alphabets also cover only A to Z (and digits for some styles), so a letter like é stays in your normal font in the middle of a bold word. Tick "Strip accents" to swap it for the plain letter.
Use it sparingly: the honest downsides
Unicode bold looks like formatting, but software treats it as a different set of characters. That has real costs, so use it as a highlighter, not as a font.
- Screen readers. Assistive technology may read a styled letter by its Unicode name ("mathematical bold capital W"), spell the word out, or skip it altogether, depending on the reader and the platform. A whole post in bold can be close to unreadable for someone who is blind or has low vision.
- Search. A styled word is not the same text as the plain word, so search on LinkedIn, Instagram or Google may not find your post or profile when someone types it normally. Keep your name, job title, company and the keywords you want to be found for in plain text.
- Character limits. A styled letter looks like one character but sits outside the range most platforms count as one. On X it counts as two, so styled text uses your allowance about twice as fast.
- Copy and paste. Anyone who copies your styled text into a document or a search box gets the symbols, not the plain words.
A good rule: one bold line per post, usually the first one, plus at most a few bold words for structure. Never style your name, phone number, email address or anything people need to find or type.
Where you can paste it
Styled text pastes anywhere that accepts plain text. What changes from platform to platform is where it helps and what it can break:
| Platform | Where it works | Watch out for |
|---|---|---|
| Posts, comments, headline, About section | Articles and newsletters have a real bold button, so use that there. Keep your name and job title plain so search finds them. | |
| Bio, display name, captions | The username only accepts letters, numbers, periods and underscores, so it cannot be styled. | |
| X | Posts and bio | Each styled letter counts as two characters, and a styled hashtag will not match the tag people follow. |
| Posts and comments | Same hashtag rule as X. |
On LinkedIn the most effective spot is the first line of a post: the feed cuts a post after a couple of lines with a "more" link, and a bold hook is what earns the click. On Instagram, styled text is the only way to get bold into a bio at all. If you are planning a bio and a launch grid together, the Instagram grid maker cuts one image into the posts that sit under it.
Tips for formatting a LinkedIn post
- Lead with one short line that makes a claim or promises a result, and make that the line you bold.
- Keep paragraphs to one to three lines with a blank line between them. White space does more for readability than any style.
- Use a symbol such as → or • at the start of list items. The Insert a symbol row puts them in for you.
- Pick one style and stick with it. Script, Fraktur and bubbles read as decoration, which is fine in an Instagram bio but distracting in a business post.
- Read the post on your phone before you publish. That is where most of your audience will see it.
The same rule as for your headline applies to your email: name and title in plain text, one accent color. The email signature generator builds that block for Gmail and Outlook.
Methodology and limits
- How it converts
- Each letter A to Z, a to z and, where the style has them, 0 to 9 is replaced with its look-alike from a fixed lookup table. Anything without a match (punctuation, emoji, accented letters unless you strip the accents) stays as you typed it. Strikethrough, underline and slashed add a combining character (U+0336, U+0332 or U+0338) after each character.
- Device check
- On load, the tool draws the test string ABCXYZabcxyz0123 in each style on a hidden canvas and compares every character with the empty box your device draws for a character no font has. Styles with any empty box are hidden behind "Show them anyway". The check describes your device only, not your readers' devices.
- Character counts
- X counts characters outside its main Latin ranges as two, following its open source twitter-text rules. LinkedIn and Instagram do not publish their counting rules, so leave some room under their limits.
- Sources
- Character ranges from the Unicode Standard, Mathematical Alphanumeric Symbols chart (checked October 13, 2026).
- Privacy
- The conversion runs in your browser. Your text is not stored, and it is only shared with DEMARCA if you choose to include it in an enquiry and submit the form.
- What it does not do
- It does not add real formatting, so screen readers and search treat the result as different characters (see the downsides above). It cannot guarantee how a style looks on another person's phone, and it does not test how LinkedIn or Instagram rank posts that use it.
Sources
- twitter-text, github.com
- Mathematical Alphanumeric Symbols chart, unicode.org