Every transformation is computed locally in your browser using JavaScript. Nothing is sent to a server, there is no tracking, and the page works offline after the first load — so you can safely reverse confidential notes, names or drafts.

JavaScript strings are stored as UTF-16 code units, so a naive split-and-reverse breaks a single emoji into two halves and detaches accents from their base letter, producing garbled output. AnyTool Text Reverser uses Intl.Segmenter to split text into grapheme clusters — the characters you actually see — then reverses those, so emoji, ZWJ sequences, surrogate pairs and accents like cafe remain intact.

Upside-down text maps each character to a 180-degree-rotated look-alike, like a to upside-down a, and reverses the whole string so it reads correctly when you physically rotate the screen. Mirror text instead maps each character to a horizontally flipped look-alike and reverses the string so it reads correctly in a mirror. Characters with no good look-alike are left unchanged.

Reverse word order changes only the order of the words, so hello world today becomes today world hello with every word still readable. If you instead want each word spelled backwards while keeping its position, use reverse each word, and to flip the whole string character by character use reverse characters.