Italic Text Generator (Unicode slanted letters to copy and paste)

Understanding the italic text generator — concept and principle

Plain-text places such as social media bios cannot use real italic formatting. This generator replaces Latin letters with italic look-alikes from Unicode, in serif italic, sans-serif italic, bold italic and bold sans-serif italic, so the slant survives copy and paste.

How it is calculated

For each letter:

• Italic capital A = U+1D434, italic small a = U+1D44E; other styles have their own starting points
• Each following letter is the next code point
• Italic small h is the older character U+210E (PLANCK CONSTANT), which fills the gap in the mathematical block
• Digits, accented letters, Hangul and punctuation stay as typed (the italic styles have no digits)
• UTF-16 length: 2 units per restyled letter

The principle

Unicode's Mathematical Alphanumeric Symbols block encodes italic letters as separate characters because mathematicians use italic variables as distinct symbols from upright ones. Since they are characters, not formatting, the slant appears wherever a font supports them. The Planck constant symbol ℎ was already in Unicode as an italic h, so the mathematical block leaves that position empty and the generator uses ℎ instead.

Worked example

Default input: "Hello World".

1. H → U+1D434 + 7 = 𝐻; e → U+1D44E + 4 = 𝑒; and so on.
2. Italic (serif): 𝐻𝑒𝑙𝑙𝑜 𝑊𝑜𝑟𝑙𝑑; italic sans-serif: 𝘏𝘦𝘭𝘭𝘰 𝘞𝘰𝘳𝘭𝘥.
3. Bold italic: 𝑯𝒆𝒍𝒍𝒐 𝑾𝒐𝒓𝒍𝒅; bold sans-serif italic: 𝙃𝙚𝙡𝙡𝙤 𝙒𝙤𝙧𝙡𝙙.
4. Letters restyled = 10; characters left as typed = 1 (the space).
5. UTF-16 length = 10 × 2 + 1 = 21.

How to read the result

Italic is good for a word or two of emphasis, a title or a quote in a bio. Keep it short: screen readers may read each letter as a mathematical symbol, and search may not match these characters to normal words. If a device shows boxes, its fonts lack these characters.

Common mistakes

• Expecting numbers to become italic.
• Writing whole posts in styled text, which hurts accessibility and search.
• Assuming the text will count as the same number of characters as plain text.

Frequently asked questions

Why is the italic h different?

It is the Planck constant symbol ℎ (U+210E), encoded before the mathematical block.

Can I italicise Korean?

No. Unicode has no italic Hangul characters.

Will this work in usernames?

Many platforms restrict usernames to plain characters, so it may be rejected.

Are these real fonts?

No. Each letter is replaced by a different Unicode character.

Sources: The Unicode Standard 15.1, Mathematical Alphanumeric Symbols block (U+1D400–U+1D7FF) and Letterlike Symbols block (U+210E PLANCK CONSTANT) · Unicode Technical Report #25, "Unicode Support for Mathematics"