Text Reverser

Each mode changes something different. This is what the text Hello world becomes in each one.

Computers store many visible characters as several pieces. A thumbs-up with a skin tone is two code points, a flag is two regional letters, a family emoji can be seven pieces joined together, and an accented letter may be a plain letter plus a separate accent. A naive reverser flips those pieces too, producing the wrong emoji, two letters instead of a flag, or an accent on the wrong letter. This tool first splits the text into user-perceived characters with the browser's text segmenter, then reverses those, so every emoji and accented letter comes out exactly as it went in.

There are no true upside-down or mirrored letters in a font, so these modes swap each letter for a Unicode character that looks like it turned or flipped: a becomes ɐ, e becomes ǝ, and the question mark becomes ¿. Upside-down text is also reversed so it reads correctly when you turn your phone around. Most letters, digits and common punctuation have a look-alike; characters without one are kept as they are. The result can be pasted anywhere that accepts Unicode, such as WhatsApp, Instagram, Discord or gaming nicknames.

Upside-down and mirror text are made of unusual characters, so screen readers read them letter by letter or not at all, search engines do not match them to the normal words, and some apps show empty boxes for a few of them. Use them for fun, not for important information. Reversing is its own undo for the backwards, each-word, word-order and line-order modes: reverse the result again to get the original text back.

People reverse text to make puzzles and riddles, create secret notes for children's games, check palindromes such as racecar or a man a plan a canal panama, write mirror writing like Leonardo da Vinci, design logos and tattoos that read in a mirror, reverse the order of a list or a log file so the newest line comes first, and add playful upside-down messages to social media posts.