What “bold” really is
LinkedIn has no bold button in the post composer. Tools like this one swap each letter for a Unicode mathematical character that looks like a bold letter. To LinkedIn it is not formatting, it is different text. Everything below follows from that.
The four common bugs
- Boxes or question marks. The device has no font containing these characters. Rare on a recent phone, more common on an old device or an out-of-date computer. Update the system, or test on another device before publishing.
- Accents stay plain. Only A to Z and digits have a bold equivalent. Accented letters stay thin, so an accented bold word looks half bold, half normal. It is not a bug on your phone.
- The text is no longer findable. Search does not match these characters to normal words. A Unicode bold keyword will not help people find you.
- Screen readers get lost. Depending on the software, the text is read letter by letter (“mathematical bold capital…”) or skipped. Newer tools are improving, but not all.
The rule that avoids most problems
Keep bold for a short phrase or a word: the hook's headline, a figure. Never a whole paragraph. Your post must stay understandable if the bold disappears.
Our tool flags bold covering more than 30% of the text and removes it in one click. You also see the rendering before you copy.
Check before publishing
- Paste your text in the editor and bold only what matters.
- Open the mobile preview: spot accents that stay thin.
- If you can, open the published post on a second phone.
For formatting in general (italic, lists, spacing), read Formatting a LinkedIn post: bold, italic and lists.
When to use Unicode bold, and when to avoid it
- Good use: the first line of the hook if it is short, a key figure, an isolated action word.
- Avoid: a whole paragraph, a whole list, a word you want search to find.
- Never in hashtags: a hashtag typed with these characters may not be recognised as a hashtag.
A concrete example
A ten-line post where every line is bold highlights nothing: the eye no longer knows where to go. The same post with a single bold line, the first, guides the reading. If in doubt, remove bold everywhere, reread, then put it back on one line only.
If you want zero risk
Structure through form instead of bold: short lines, one idea per paragraph, a dash or a number at the start of a line for a list. LinkedIn Articles and newsletters offer real bold, readable by all software: if your content is long, that is the right format.
Common mistakes
- Copying text already converted to bold from another app, then editing it: the letters remain special characters and mix with normal text.
- Bolding an accented word and assuming the phone is faulty: accents are not converted, that is normal.
- Forgetting to reread on mobile: that is where most readers will see your post.
Paste your text, bold the essentials, then tap “Check before copying”: over-long bold flagged, mobile rendering visible, everything stays in your browser.
Screen reader behaviour varies by software and version: test with yours. LinkedIn is a trademark of LinkedIn Corporation; LinkedIn Format Pro is not affiliated with, endorsed or sponsored by LinkedIn.