Use the comparison rules to match the definition you need. Standard phrase checks usually ignore case, whitespace and punctuation. Strict checks can keep every character. The result shows both the compared text and its reverse, so a surprising answer is easy to verify instead of being a bare yes or no.
Free Palindrome Checker
Runs entirely in your browser - no upload, no sign-up.
Palindrome result
Ready to checkEnter text or load the example to compare it forward and backward.
0original characters
0compared characters
0removed by rules
0/0matching pairs
What is a palindrome checker?
A palindrome checker tests whether a word, phrase or number reads the same forward and backward. It can ignore letter case, spaces, punctuation and accents before comparing both directions. The result updates as you type, shows the exact normalized text, and stays entirely in your browser.
How to use
- 1Enter the text. Type or paste a word, sentence, number or other sequence into the input box.
- 2Choose the rules. Decide whether case, spaces, punctuation and accent marks should affect the comparison.
- 3Read the live verdict. Compare the normalized and reversed rows, then inspect the first unmatched pair if the text fails.
- 4Copy the compared text. Copy the normalized value when you need it for a puzzle, lesson or code test.
Who it's for
- Puzzle fans verify words, clues and phrase palindromes while solving or creating games.
- Students and teachers demonstrate string normalization and mirrored sequences with visible intermediate steps.
- Developers check expected inputs while practicing palindrome algorithms or writing test cases.
- Writers and name creators explore symmetric words, titles and short lines without sending drafts to a server.
FAQ
Is my text uploaded when I use the palindrome checker?
No. The palindrome check runs locally in your browser. Words, phrases, classroom examples and draft text are not sent to a server, and you can clear the input at any time.
Is this palindrome checker free?
Yes. You can check as many words, phrases and numbers as you need without signing up, installing software or paying. The result updates live as you type or change a comparison rule.
How much text can I check?
There is no fixed service limit because the comparison runs on your device. Very large pasted documents can take more browser memory, but ordinary words, sentences, lists and code-test strings are checked instantly.
Does a palindrome ignore spaces and punctuation?
Usually, phrase palindromes ignore spaces, punctuation and capitalization. That is why “Never odd or even” qualifies. The checker enables those rules by default, but you can turn any rule off for an exact character-by-character comparison.
Are single letters and one-digit numbers palindromes?
Yes. A sequence with one comparable character reads the same in both directions, so a single letter or digit is a palindrome. Empty input is shown as waiting for text instead of being labeled true.
Does the checker work with accented and non-English text?
Yes. It recognizes Unicode text and keeps accents significant by default. Turn on Ignore accents when you want a base letter such as é to compare like e. Locale-aware lowercasing is used when Ignore case is enabled.
Why does the checker show normalized text?
The normalized row reveals exactly which characters were compared after your selected rules removed spaces or punctuation and adjusted case or accents. The reversed row makes the verdict transparent and helps identify unexpected mismatches.