Palindrome Checker

Check if a word or phrase is a palindrome with animated highlighting

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About Palindromes

What is a Palindrome?

A palindrome is a word, phrase, number, or other sequence of characters that reads the same forward and backward (ignoring spaces, punctuation, and capitalization). The word "palindrome" comes from the Greek words "palin" (again) and "dromos" (way, direction).

Famous Palindromes

  • Words: racecar, level, radar, kayak, noon, civic
  • Names: Hannah, Anna, Bob, Otto
  • Phrases: "A man, a plan, a canal: Panama"
  • Sentences: "Was it a car or a cat I saw?"
  • Numbers: 12321, 45654, 1001

Types of Palindromes

  • Word Palindromes: Single words that read the same both ways
  • Phrase Palindromes: Sentences or phrases (ignoring spaces/punctuation)
  • Numeric Palindromes: Numbers that read the same forwards and backwards
  • Semordnilap: Words that spell different words when reversed (not true palindromes)

Features

  • Real-time palindrome detection
  • Animated character highlighting for palindromes
  • Configurable options (case, spaces, punctuation)
  • Visual comparison of original and reversed text
  • Detailed analysis and statistics
  • Quick example palindromes to try

Fun Facts

  • The longest single-word palindrome in English is "tattarrattat" (a knock on the door)
  • February 20, 2002 (20-02-2002) was a palindrome date
  • The word "palindrome" itself is not a palindrome
  • Some languages have more palindromes than others