Make your Facebook posts, page descriptions, and comments stand out with bold and cursive fonts.
Ordinary Facebook posts and comments have no bold, italic or font control, which is why styled unicode is so common there. Everything in the list pastes into a post, a comment, a group post, a page description or an event description and renders in the app and on the web. Bold sans for a headline line, small caps for a quiet subheading, and circled digits ①②③ as list markers are the three patterns that come up most, because Facebook flattens real lists and offers no headings. Long stretches of script or fraktur are hard to read in the feed; use them for a single word or a name.
Two places do not accept styled text. Your profile name is filtered under the real-name policy and rejects mathematical alphabets. Hashtags do not link when styled, #𝗦𝗮𝗹𝗲 is not #Sale to Facebook. Facebook's search also matches plain characters only, so a styled brand name in a post will not surface for someone searching the plain name. The practical rule: style words that are read, keep plain the words that are searched. Page names are reviewed less strictly than profile names but styled characters are still often reverted; a plain page name with a styled cover-photo caption is the durable approach.
Usually not. Profile names are filtered under the real-name policy and reject mathematical alphabets. Posts, comments, bios and page descriptions accept them.
Facebook matches hashtags by exact characters. A hashtag in bold or script is a different string and is not linked. Keep hashtags plain.
Yes. The app uses the phone's system fonts, which cover the mathematical alphabets on iOS and Android. It also renders on the web on Windows and macOS.