How do I get bold text on Twitter / X?

There is no bold button, so you copy a bold-looking Unicode variant like the ones on this page and paste it in. It works in posts, bios, display names and DMs, because they are characters rather than formatting.

Will these work on mobile and in the app?

Yes, in almost every case. The maths and letterlike blocks are covered by the system fonts on iOS and Android. The riskiest are the rarer styles like upside down, which can show an empty box on older devices for a handful of letters.

Why does my styled bio say it's too long?

Because X counts every one of these characters as two, so the 160-character bio limit becomes about 80 styled characters. Each style on this page shows its real cost, so you can see it before X refuses to save.

Is it bad for my reach?

It can be. X's search matches what was typed, so a styled name does not surface when someone searches the plain spelling. Style a word for emphasis, keep your name and what you do in plain text.

Can I use these in my display name and handle?

Display name yes, capped at 50 characters. Handle no: handles accept only letters, numbers and underscores.

Is my text sent anywhere?

No. The substitution runs entirely in your browser and nothing is transmitted or stored.

Twitter / X Fonts Generator

Type once and get every style at once. Copy the one you want straight into your bio, your display name or a post.

𝐁𝐮𝐢𝐥𝐝𝐢𝐧𝐠 𝐒𝐪𝐮𝐢𝐝𝐗, 𝐟𝐢𝐧𝐝 𝐜𝐮𝐬𝐭𝐨𝐦𝐞𝐫𝐬 𝐨𝐧 𝐗

Bold66 / 160 in a bio

𝐵𝑢𝑖𝑙𝑑𝑖𝑛𝑔 𝑆𝑞𝑢𝑖𝑑𝑋, 𝑓𝑖𝑛𝑑 𝑐𝑢𝑠𝑡𝑜𝑚𝑒𝑟𝑠 𝑜𝑛 𝑋

Italic66 / 160 in a bio

𝑩𝒖𝒊𝒍𝒅𝒊𝒏𝒈 𝑺𝒒𝒖𝒊𝒅𝑿, 𝒇𝒊𝒏𝒅 𝒄𝒖𝒔𝒕𝒐𝒎𝒆𝒓𝒔 𝒐𝒏 𝑿

Bold italic66 / 160 in a bio

𝗕𝘂𝗶𝗹𝗱𝗶𝗻𝗴 𝗦𝗾𝘂𝗶𝗱𝗫, 𝗳𝗶𝗻𝗱 𝗰𝘂𝘀𝘁𝗼𝗺𝗲𝗿𝘀 𝗼𝗻 𝗫

Sans bold66 / 160 in a bio

𝘉𝘶𝘪𝘭𝘥𝘪𝘯𝘨 𝘚𝘲𝘶𝘪𝘥𝘟, 𝘧𝘪𝘯𝘥 𝘤𝘶𝘴𝘵𝘰𝘮𝘦𝘳𝘴 𝘰𝘯 𝘟

Sans italic66 / 160 in a bio

ℬ𝓊𝒾𝓁𝒹𝒾𝓃ℊ 𝒮𝓆𝓊𝒾𝒹𝒳, 𝒻𝒾𝓃𝒹 𝒸𝓊𝓈𝓉ℴ𝓂ℯ𝓇𝓈 ℴ𝓃 𝒳

Script66 / 160 in a bio

𝓑𝓾𝓲𝓵𝓭𝓲𝓷𝓰 𝓢𝓺𝓾𝓲𝓭𝓧, 𝓯𝓲𝓷𝓭 𝓬𝓾𝓼𝓽𝓸𝓶𝓮𝓻𝓼 𝓸𝓷 𝓧

Bold script66 / 160 in a bio

𝔅𝔲𝔦𝔩𝔡𝔦𝔫𝔤 𝔖𝔮𝔲𝔦𝔡𝔛, 𝔣𝔦𝔫𝔡 𝔠𝔲𝔰𝔱𝔬𝔪𝔢𝔯𝔰 𝔬𝔫 𝔛

Fraktur66 / 160 in a bio

𝕭𝖚𝖎𝖑𝖉𝖎𝖓𝖌 𝕾𝖖𝖚𝖎𝖉𝖃, 𝖋𝖎𝖓𝖉 𝖈𝖚𝖘𝖙𝖔𝖒𝖊𝖗𝖘 𝖔𝖓 𝖃

Bold fraktur66 / 160 in a bio

𝔹𝕦𝕚𝕝𝕕𝕚𝕟𝕘 𝕊𝕢𝕦𝕚𝕕𝕏, 𝕗𝕚𝕟𝕕 𝕔𝕦𝕤𝕥𝕠𝕞𝕖𝕣𝕤 𝕠𝕟 𝕏

Outline66 / 160 in a bio

𝙱𝚞𝚒𝚕𝚍𝚒𝚗𝚐 𝚂𝚚𝚞𝚒𝚍𝚇, 𝚏𝚒𝚗𝚍 𝚌𝚞𝚜𝚝𝚘𝚖𝚎𝚛𝚜 𝚘𝚗 𝚇

Monospace66 / 160 in a bio

ʙᴜɪʟᴅɪɴɢ ꜱqᴜɪᴅx, ꜰɪɴᴅ ᴄᴜꜱᴛᴏᴍᴇʀꜱ ᴏɴ x

Small caps52 / 160 in a bio

Ⓑⓤⓘⓛⓓⓘⓝⓖ ⓈⓠⓤⓘⓓⓍ, ⓕⓘⓝⓓ ⓒⓤⓢⓣⓞⓜⓔⓡⓢ ⓞⓝ Ⓧ

Circled66 / 160 in a bio

Ｂｕｉｌｄｉｎｇ　ＳｑｕｉｄＸ,　ｆｉｎｄ　ｃｕｓｔｏｍｅｒｓ　ｏｎ　Ｘ

Wide71 / 160 in a bio

X uo sɹǝɯoʇsnɔ puıɟ 'XpınbS ƃuıplınᗺ

Upside down37 / 160 in a bio

B̶u̶i̶l̶d̶i̶n̶g̶ S̶q̶u̶i̶d̶X̶,̶ f̶i̶n̶d̶ c̶u̶s̶t̶o̶m̶e̶r̶s̶ o̶n̶ X̶

Strikethrough67 / 160 in a bio

B̲u̲i̲l̲d̲i̲n̲g̲ S̲q̲u̲i̲d̲X̲,̲ f̲i̲n̲d̲ c̲u̲s̲t̲o̲m̲e̲r̲s̲ o̲n̲ X̲

Underline67 / 160 in a bio

These are not fonts, and that matters

X gives you no formatting. There is no bold button, and there never has been. What these generators produce are entirely separate Unicode characters that happen to be shaped like styled Latin letters. The bold A is not an A in a bold font, it is a different character called MATHEMATICAL BOLD CAPITAL A, and that is precisely why it survives being pasted into a platform with no formatting at all.

Useful to know, because it explains every quirk. The text cannot be searched against its plain spelling, it cannot be styled further, and some of it will render differently on Android than on iOS depending on which glyphs the system font covers.

The cost nobody mentions

X charges two characters for anything outside the Latin ranges, and every one of these styles is outside them. So a bio that fits comfortably in 160 plain characters needs 320 once it is styled, and simply will not save.

That is why every style on this page shows its real cost against the 160-character limit rather than just its length. Roughly speaking, a styled bio gets you about 80 usable characters. Style one word rather than the whole line and you keep both the effect and the room.

What it costs you in reach

Two real downsides, and neither is theoretical. Screen readers announce these characters one by one, or as their formal Unicode names, or skip them entirely, so a fully styled bio is unreadable to anyone using one. And X's search matches the characters as typed, so a name written in script does not come up when someone searches the plain spelling of it.

The practical rule: style a word for emphasis, never your name, never your handle, and never the sentence that says what you do. Those are the parts that need to be found.

A styled bio does not bring you customers

It is worth ten minutes, not an afternoon. The profile is the easy half, and the half you control entirely. The hard half is being in the right conversations, and no amount of typography moves that.

SquidX does that part: it watches X for people describing the problem your product solves, scores them against your ideal customer profile, and hands you a ranked shortlist every morning. Style your bio, then go talk to the people who need what you built.

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