Free tool · no sign-up
Bold and italic text formatter
Type once and copy your text in bold, italic, monospace and more, ready to paste into LinkedIn posts, X posts and Instagram bios, where there’s no formatting button.
Letters and (for some styles) digits change; punctuation, emoji and accented letters stay as they are.
Bold
Italic
Bold italic
Sans bold
Sans italic
Monospace
Strikethrough
Underline
Plain text (removes styling)
Use it sparingly: it can hurt accessibility
A good rule: style a word or a short heading at most, never a whole post, a link, a hashtag, or anything a reader needs to act on. If you are writing the same post for several networks, keep the plain version as your source and style only where it helps.
How it works
Social networks strip formatting from post text, so this tool doesn’t add any. Instead it swaps each letter for its look-alike from Unicode’s mathematical alphabets: 𝐁 is “mathematical bold capital B”, a different character from B that most fonts draw in bold. Strikethrough and underline add a combining mark after each character.
Only the letters A to Z (and digits, for bold, sans bold and monospace) have styled versions. Accented letters, punctuation and emoji stay as they are, so mixed text keeps working.
Where styled text works
- LinkedIn: posts and the About section, for a bold first line or a short heading between paragraphs.
- Instagram: bios and captions. Keep your name and keywords plain so people can still find you in search.
- X, Threads and Bluesky: posts and bios. On X, styled letters use up the character limit twice as fast.
- Facebook: posts and comments, with the same caveats.
Questions
- How do I make text bold on LinkedIn?
- LinkedIn posts have no bold button. Type your text here, copy the bold version and paste it into your post. What you paste is not formatting but different characters that look bold, so it works anywhere plain text does.
- Does it work on Instagram and X?
- Yes. The styled characters paste into Instagram captions and bios, X posts, Threads, Bluesky, Facebook and most other places that accept text. A few apps and older phones lack fonts for them and show empty boxes instead.
- Is styled text bad for accessibility?
- It can be. Screen readers may read each styled letter out by its Unicode name, or skip it, so a styled sentence can become unreadable to someone who can’t see it. Search and hashtags don’t match styled letters either. Use it for a word or a short heading, never for the whole post or anything people must understand.
- Do styled letters count as more characters?
- On most networks each styled letter counts as one character. X weighs characters itself and counts these letters as two, so a styled X post uses up the 280-character limit faster.
- How do I turn styled text back into normal text?
- Paste it into the box: the last line, “Plain text”, turns styled letters back into ordinary ones and removes strikethrough and underline marks.
More free tools
- Hashtag generatorHashtags for your topic, sized for the network you post on.
- Post idea generatorA week of post ideas with hooks and outlines, one per day.
- Character counterCheck one post against every network’s text limit at once.
- Best time to postCited posting windows per network, shown in your time zone.
- Image size guidePost, story, profile and cover sizes, and which ones your image fits.
For developers
Publish to all of them with one API call
postpeg is an API for products that post to social networks. Write the post once, and it is checked against every network’s rules, then published or scheduled on any mix of the 10 networks we support, with a status for each account.