How to use Reverse Text
Reverse any text by characters, words, or lines entirely in your browser — nothing is uploaded to any server. Whether you're creating mirror-image text for a puzzle, flipping a word list, or reversing the order of lines in a log file, this tool handles it instantly. Choose from three reversal modes and optionally reverse each line independently while keeping the line order intact.
- Paste or type your text into the input area.
- Select a reversal mode: "By characters" (mirrors the full string), "By words" (reverses word order), or "By lines" (reverses line order).
- For character mode, toggle "Reverse each line separately" to flip each line independently while preserving line order.
- Click "Reverse" — output appears instantly.
- Copy or download the reversed text.
Your data never leaves your device — 100% private processing.
Reversal modes explained
Character reversal reads the entire input as a flat sequence and outputs it in reverse order — "Hello World" becomes "dlroW olleH". Word reversal splits the input on whitespace boundaries, reverses the array of tokens, and rejoins with spaces, turning "one two three" into "three two one". Line reversal treats each newline-terminated segment as a unit and reverses the order of those segments, making the last line first — useful for reversing chronological logs or reversing the order of dated entries. All three modes run entirely in the browser with no server round trip.
| Mode | Input | Output |
|---|---|---|
| By characters | Hello World | dlroW olleH |
| By words | one two three | three two one |
| By lines | Line1 / Line2 / Line3 | Line3 / Line2 / Line1 |
| Each line (chars) | cat / dog | tac / god |
Unicode and emoji reversal considerations
Naive character reversal using JavaScript's split("").reverse() breaks Unicode characters above U+FFFF — including most emoji — because they are stored as surrogate pairs in JavaScript's UTF-16 string model. A single emoji occupies two code units, and splitting them apart produces corrupted output. This tool uses the Unicode-aware spread operator ([...str]) or the Intl.Segmenter API where available to treat each grapheme cluster as one unit, correctly preserving emoji, flag sequences, and complex scripts such as Devanagari and Thai through all reversal operations.
Worked examples
Reverse characters
Inputs: 'Hello'
Result: olleH
Reverse word order
Inputs: 'one two three'
Result: three two one
Reverse line order
Inputs: Line1 / Line2 / Line3
Result: Line3 / Line2 / Line1
Glossary
- Grapheme cluster
- The smallest unit of writing that a user perceives as a single character; it may be composed of multiple Unicode code points, such as a base letter combined with diacritics or a flag emoji sequence.
- Surrogate pair
- A pair of 16-bit code units used in UTF-16 to represent a single Unicode code point above U+FFFF, such as most emoji and rare CJK characters.
- Code unit
- The fixed-size storage unit for an encoding; UTF-16 uses 16-bit code units, and JavaScript strings are sequences of UTF-16 code units.
- Palindrome
- A word, phrase, or sequence that reads the same forwards and backwards (e.g., "racecar"); character reversal is the standard computational test for palindromes.
Related reading
Frequently Asked Questions
Why use Reverse Text?
- Three distinct reversal modes — by character, by word, or by line — cover all common reversal tasks
- Reverse-each-line option independently flips character order per line while preserving line sequence
- Unicode-aware splitting correctly handles emoji, flag sequences and multi-codepoint grapheme clusters
- Instant output with no character limit makes it suitable for reversing large multi-page documents
Common use cases
- Check whether a word or phrase is a palindrome by comparing the reversed output to the original
- Reverse the order of lines in a dated changelog so the newest entry appears at the top
- Create a mirror-text effect for a graphic design caption by reversing the character sequence
- Flip a bulleted idea list to reverse priority order during a brainstorming session
- Reverse word order in a sentence as part of a language-learning or grammar analysis exercise
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