Make your text bold online without HTML. Copy and paste bold Unicode fonts into social media bios, posts, and comments.
The list gives you three bold alphabets and they are not interchangeable. Sans-serif bold (𝗔𝗕𝗖) matches the system fonts on Instagram, X and Discord, so it reads as a weight change rather than a font change. Use it for a bio headline or the first line of a post. Bold serif (𝐀𝐁𝐂) has visible serifs and reads as editorial; it stands out more in a feed but looks out of place in a chat. Bold italic (𝘼𝘽𝘾) leans and is the least legible of the three at small sizes. All three include digits, which most other styles do not, so a bold price or date stays bold.
Facebook posts, comments and page descriptions accept these characters, which is the usual reason people search for bold text. Facebook has no formatting toolbar for ordinary posts. Instagram bios, captions and comments accept them. X accepts them in posts, bios and display names. WhatsApp accepts them everywhere, and also has its own native bold: wrap a word in asterisks and it renders bold without any special characters, which is the better option in a chat because it stays searchable. Facebook profile names are the exception: the real-name policy rejects most styled characters there.
No. Ctrl+B applies a style to normal letters; this replaces the letters with different characters that happen to be drawn bold. The upside is it survives anywhere text is accepted. The downside is search and spell-check see it as different words.
Sans-serif bold. It sits closest to Instagram's own typeface, so it reads as emphasis rather than as a different font, and it includes bold digits for a price or a date.
Because 𝗻𝗮𝗺𝗲 and name are different characters to a search index. Keep at least one plain-text copy of anything people need to find (a searchable name line in a bio, for instance) and use bold for the line above it.