Facebook Bold Text Generator
Bold, italic, bold-italic and underlined text that survives copy and paste into Facebook.
Serif bold (𝐛𝐨𝐥𝐝) is the classic look; sans bold (𝗯𝗼𝗹𝗱) matches Facebook's own interface font more closely and stands out slightly more in the feed.
Three ways to get bold text on Facebook
- The Unicode trick (this tool). Facebook's normal post box, comments, bio and page posts have no bold button at all. The workaround is to replace each letter with its bold look-alike from the Unicode Mathematical Alphanumeric Symbols block: “B” becomes 𝐁 (U+1D401), “o” becomes 𝐨 and so on. To Facebook it is just text, so it survives copy and paste and shows as bold on every modern phone and browser. This is the only method that works in a regular timeline post, a comment, a caption or your bio.
- Built-in formatting where Facebook offers it. A few places have real rich text. Group posts show a formatting toolbar (bold, italic, headings, lists, quotes, code) in the composer when the group has text formatting enabled; you select the text and press B. Messenger understands simple markdown-style markers in chats:
*bold*,_italic_,~strikethrough~and`monospace`. Facebook Notes, which had a full editor, was retired years ago, and Page posts never got a formatting bar. - Plain posts have no bold button, and that is not changing. Meta has tested formatting in the composer several times but the regular post box, comments and the bio still accept plain text only. If you see a “bold” option in a third-party app, it is doing exactly what this page does: swapping characters.
How to use bold text on Facebook
Type the post normally, then paste the bold version of the words you want to stand out (a headline, a date, a price). Whole paragraphs in bold are hard to read and look like spam.
Paste the bold text into the comment field the same way. It works in replies and in comments on Pages, Reels and Marketplace listings.
Profile → Edit profile → Bio. Bold letters count as one character each, so the 101-character limit stays the same. Underlined bold uses two characters per letter.
Facebook rejects 𝐛𝐨𝐥𝐝 letters in the name field because they are not part of a real alphabet. Use them in the nickname field or in a group or page name instead.
Bold, italic, underline and strikethrough compared
| Style | Example | Digits? | Renders on old devices |
|---|---|---|---|
| Bold (serif) | 𝐅𝐚𝐜𝐞𝐛𝐨𝐨𝐤 𝟐𝟎𝟐𝟔 | Yes | Very well |
| Sans bold | 𝗙𝗮𝗰𝗲𝗯𝗼𝗼𝗸 𝟮𝟬𝟮𝟲 | Yes | Very well |
| Italic | 𝐹𝑎𝑐𝑒𝑏𝑜𝑜𝑘 2026 | No | Well |
| Bold italic | 𝑭𝒂𝒄𝒆𝒃𝒐𝒐𝒌 2026 | No | Well |
| Underline | F̲a̲c̲e̲b̲o̲o̲k̲ 2̲0̲2̲6̲ | Yes | Well (a combining mark) |
| Strikethrough | F̶a̶c̶e̶b̶o̶o̶k̶ 2̶0̶2̶6̶ | Yes | Well (a combining mark) |
| Bold + underline | 𝐅̲𝐚̲𝐜̲𝐞̲𝐛̲𝐨̲𝐨̲𝐤̲ | Yes | Well, uses 2 characters per letter |
Italic and bold-italic have no digits in Unicode, so numbers stay in the normal font. If you need an italic price or date, use sans bold instead, or write the number out in words.
Limitations you should know about
- Screen readers read 𝐛𝐨𝐥𝐝 letters one by one (“mathematical bold small B…”) or skip them. Never put the only copy of an address, phone number or date in a Unicode font.
- Search and hashtags do not understand the substitution. #𝐒𝐚𝐥𝐞 is not #Sale. Keep hashtags, @mentions and links in normal text.
- Automatic translation (“See translation”) cannot translate the styled words.
- Names must use letters from a real alphabet; the bold versions are rejected.
- Old devices with incomplete fonts show boxes. Serif bold and sans bold are the two most widely supported styles, which is why they are at the top of the list.
- Ads: Meta's ad review sometimes rejects ad copy that uses Unicode formatting, so use it in organic posts, not paid ones.
