X (Twitter) Font Generator: Fonts for Posts, Bios and Names

X uses its own typeface, Chirp. Twitter introduced it in 2021, built with the Swiss type foundry Grilli Type (X Blog), and it still runs through the app and website today: the timeline, the compose box, menus and buttons.

You can't swap Chirp for another font, and neither can your readers. The styles in this generator work differently. They're Unicode characters, not a font. When a font doesn't include a character, your device draws it with a fallback font that does, which is why styled letters can look a little different from the Chirp text around them and from one device to the next.

Every style in the generator pastes into X. The ones people reach for most:

• Bold (𝐁𝐨𝐥𝐝) and Bold Sans (𝗕𝗼𝗹𝗱 𝗦𝗮𝗻𝘀): thread openers and the one line you want people to quote.
• Italic (𝘐𝘵𝘢𝘭𝘪𝘤 𝘚𝘢𝘯𝘴) and Bold Italic (𝑩𝒐𝒍𝒅 𝑰𝒕𝒂𝒍𝒊𝒄): quotes, inner monologue, emphasis on a single word.
• Cursive (𝒞𝓊𝓇𝓈𝒾𝓋ℯ) and Bold Cursive (𝓑𝓸𝓵𝓭 𝓒𝓾𝓻𝓼𝓲𝓿𝓮): display names and sign-offs.
• Typewriter (𝚃𝚢𝚙𝚎𝚠𝚛𝚒𝚝𝚎𝚛): commands, code and tickers.
• Outline (𝕆𝕦𝕥𝕝𝕚𝕟𝕖), Gothic (𝔊𝔬𝔱𝔥𝔦𝔠) and Bubble (Ⓑⓤⓑⓑⓛⓔ): display names and one-word accents.
• Strikethrough (S̶t̶r̶i̶k̶e̶t̶h̶r̶o̶u̶g̶h̶): the crossed-out joke, or a correction you want people to see.

X doesn't count every character the same way (X Developer Platform). Its counting rules give a weight of one to code points U+0000 through U+10FF (which covers plain letters, numbers and common punctuation) and a few punctuation ranges, and a weight of two to everything else (twitter-text config). Emoji count as two. So do nearly all styled letters.

In practice:

• Bold, Italic, Cursive, Gothic, Outline, Sans and Typewriter letters come from Unicode's Mathematical Alphanumeric Symbols block (a few from Letterlike Symbols), so each one counts as 2. A fully bold post fits about half as many letters.
• Bubble, Squares and Wide letters also count as 2 each. Wide even turns spaces into wide spaces that count as 2.
• Strikethrough, Underline and the other line styles keep the plain letter and add a combining mark after it. Each counts as 1, so every styled letter costs 2.
• Small Caps and Upside Down borrow letters from several Unicode ranges, so the cost varies letter by letter.

Paste your draft into the X character counter to see the real weighted count before you post. Accounts with X Premium can write posts of up to 25,000 characters and add real bold and italics (X Help), so styled Unicode matters less there.

• Screen readers: styled letters may be read one by one with long names like "mathematical bold capital B" or skipped entirely (Scope). A thread opener that's all styled may come across as noise. Keep the message plain and style a word or two.
• Search: X search matches the characters people type. A styled keyword won't show up for the plain word, so don't style names, product names or topics you want to be found for.
• Hashtags and @mentions: they need plain characters to link. Style the words around them, never the tags.
• Test before you post: check the post on your phone and on the web, since each draws rare characters differently.

Styled text on X works best in small doses, in the spots people look first.

ViralFarm schedules and publishes X posts with text, up to 4 images, or a video, along with your other channels. Write the post with its styled opener, check the count, and drop it into the queue. If your account has X Premium, ViralFarm can publish long posts too.

Give each channel its own caption, so the X version stays inside 280 while Threads and LinkedIn get longer cuts of the same idea. The free plan covers 2 connected channels and 20 published posts a month, with no credit card.