Text Transformer

Upside down: “Hello World!” is first reversed to “!dlroW olleH”, then each character is swapped for its rotated look-alike: ! → ¡, d → p, l → ן, r → ɹ, o → o, W → M, e → ǝ, H → H. The result is ¡pןɹoM oןןǝH.

Bold: Unicode’s bold letters start at U+1D400 for A and U+1D41A for a, in alphabetical order. H is the 8th capital letter, so it becomes U+1D400 + 7 = U+1D407, 𝐇. Each of these letters takes 4 bytes in UTF-8 instead of 1, so “Hello” grows from 5 bytes to 20.

The bold, italic, script and Fraktur alphabets were added in Unicode 3.1 (2001) for mathematicians, who use 𝐱 and 𝑥 to mean different things in the same formula. A few letters such as ℎ, ℂ and ℜ had already been encoded earlier as single symbols, which is why those styles have gaps that are filled from the older Letterlike Symbols block. Circled letters came from East Asian character sets, and full-width forms from typing Latin letters among Chinese, Japanese and Korean characters.

Leet (“1337”) grew out of 1980s bulletin-board culture, and Pig Latin is far older — it was a schoolyard game in 19th-century America. Upside-down text became an internet craze in the 2000s once Unicode had enough rotated-looking letters, mostly borrowed from the International Phonetic Alphabet.

This tool shows your text in every style at once: upside down, reversed three ways, two kinds of leet, Pig Latin and 15 Unicode letter styles, each with a copy button. Reversing works on whole visible characters, so emoji and flags survive, and fancy text can be converted back to plain.

Fancy letters are real Unicode characters rather than a font, so they paste anywhere but may be read badly by screen readers. Letters with accents are left as they are, because Unicode has no bold or script versions of them. Everything runs in your browser.

Related tools: Text Case Converter, Unicode Lab, and Caesar Cipher.