Text Flipper

Text flipping might look like magic, but it is actually a clever use of the Unicode standard. Unicode assigns a unique number to every character used in writing systems around the world — and that includes special characters that look like rotated or mirrored versions of regular letters.

How Mirror Text Works

Mirror text simply reverses the order of characters in a string. In programming terms, the string is split into an array of characters, the array is reversed, and then joined back together. This is why "hello" becomes "olleh". It is fast, lossless, and works with any character.

How Upside-Down Text Works

Upside-down text is more complex. First, the string is reversed like mirror text. Then, each character is replaced by a Unicode character that visually resembles a 180-degree rotation of the original. For example, the letter "u" becomes "n" when flipped, and "p" becomes "d". Some characters like "x" and "o" are naturally symmetrical and stay the same. Not every character has a perfect flipped equivalent, so the result is an approximation rather than a true geometric rotation.

Fun Facts About Unicode

• Unicode contains over 149,000 characters covering 150+ modern and historic scripts.
• The first 128 Unicode characters are identical to ASCII, ensuring backward compatibility.
• Emoji are part of the Unicode standard and are treated as regular characters by computers.
• Some fonts do not include glyphs for rare Unicode characters, which is why upside-down text occasionally appears as boxes.