Style Vietnamese text into bold, italic and more Unicode fonts without losing tone marks.
These are styled Unicode letters, not a real font change — screen readers and search engines may not read them as normal text, and very old devices may show empty boxes instead of the styled characters. Use for social bios and captions, not for accessible body text.
How does this keep Vietnamese tone marks?
Vietnamese tone marks (as in a, e, o, u) are combining accents layered on a base letter. This tool first decomposes each character into its base letter plus its combining tone marks, then swaps only the base letter for a styled Unicode character (bold, italic, etc.), and finally reattaches the original tone marks on top of the styled letter — so "Việt" stays readable as bold Vietnamese instead of losing its tone marks.
Our Fancy Text Generator (text-emoticon-maker) handles many scripts but strips or garbles Vietnamese tone marks because it swaps whole characters rather than separating base letters from accents. This dedicated tool exists specifically to solve that problem for Vietnamese. Note: đ and Đ keep their normal form in every style, since Unicode has no styled equivalent for that letter.
How do I make fancy Vietnamese text that keeps its tone marks?
To style Vietnamese text without breaking its tone marks, first split each character into its base letter and its combining tone marks (Unicode NFD decomposition), replace only the base letter with a styled Unicode character, then reattach the original tone marks. Example: "Việt" becomes bold as a stylized V-i-e-t with the same breve, circumflex and dot-below marks still layered on top.
Steps this tool follows
Decompose the input text with Unicode NFD normalization, splitting accented letters into a base letter plus separate combining tone marks.
Leave any combining mark (Unicode range U+0300 to U+036F) untouched, since these carry the tone information.
Replace each plain base letter (a-z, A-Z) with the matching character from a styled Unicode block, such as Mathematical Bold or Mathematical Italic.
The browser then renders the styled base letter with the original combining tone marks stacked on top, reproducing the correct tone visually.
Letters without a styled Unicode equivalent, such as đ and Đ, are left in their normal form instead of being dropped or garbled.
How the style mapping works
styled letter = Unicode_style_block_offset + (letter position in a-z or A-Z)
NFD decomposition = the canonical Unicode form that separates a base letter from its combining accents
combining tone marks = characters in the U+0300-U+036F range that render layered on the previous character
styled Unicode block = a range of the Mathematical Alphanumeric Symbols block, such as Bold (starting U+1D400) or Italic (starting U+1D434)
Available styles
Style
Example (V)
Notes
Bold
𝐕
Full A-Z, a-z and 0-9 covered
Italic
𝑉
Lowercase h uses the Planck constant character (ℎ) per the Unicode standard
Bold Italic
𝑽
No digit variant exists in Unicode for this style
Sans Bold
𝗩
Full A-Z, a-z and 0-9 covered
Frequently asked questions
Why does the regular Fancy Text Generator break Vietnamese words?
A typical fancy-text tool maps each whole character to a lookup table, but pre-composed Vietnamese letters like "ệ" are not present as single entries in most styled Unicode blocks, so they get dropped, replaced with a fallback, or left unstyled. This tool avoids that by separating the base letter from its tone marks first, styling only the base letter, and keeping the tone marks intact.
Why do đ and Đ stay the same in every style?
Unicode's Mathematical Alphanumeric Symbols block only defines styled versions of the 26 basic Latin letters (a-z, A-Z) and digits — it has no entry for đ or Đ, which are separate letters, not accented forms of "d" that can be decomposed. Since no styled equivalent exists, this tool leaves them in their normal form rather than dropping the letter.
Will this text display correctly everywhere?
Most modern browsers, phones and social apps (Facebook, Instagram, TikTok) render these Unicode characters correctly, but some older devices, certain fonts, or plain-text-only systems (like some usernames or IDs) may show empty boxes or missing glyphs instead.
Is this accessible to screen readers?
No, not reliably. These are distinct Unicode characters, not a genuine bold/italic font applied to normal letters, so screen readers may read them incorrectly, skip them, or spell out unfamiliar symbol names. Use this styled text for decorative purposes like social bios, not for content that needs to be accessible.
This tool applies Unicode Mathematical Alphanumeric Symbols styling, which is a text substitution technique, not an actual font. It is not searchable in the same way as plain text, is not reliably read by screen readers, and letters without a styled Unicode equivalent (đ, Đ) keep their normal form. Use it for social media bios and captions, not accessible body content.
Sources: Unicode Standard — Mathematical Alphanumeric Symbols block (U+1D400-U+1D7FF)