Palindrome Checker

Giới thiệu công cụ

The Palindrome Checker tests whether a word or phrase reads the same forwards and backwards. You can ignore case, spaces, and punctuation to match the classic definition (e.g. "A man, a plan, a canal: Panama" is a palindrome when spaces and punctuation are stripped).

The tool normalises your input based on the selected options and compares it to its reverse. The result updates instantly as you type. All processing happens in your browser.

Cách sử dụng

1. Enter a word or phrase in the text area.
2. Toggle Ignore Case, Ignore Spaces, and Ignore Punctuation as needed.
3. The result shows instantly — a green check for a palindrome, red X for not.
4. Click any example phrase below the result to load it instantly.

Trường hợp sử dụng

Word game players verify whether a phrase qualifies as a palindrome. English teachers demonstrate the concept with classic examples. Developers testing string-manipulation code use it to validate reversal logic.

Câu hỏi thường gặp

• Does it support non-English text? — Yes, any Unicode text is accepted. Note that Ignore Punctuation only strips ASCII punctuation; accented letters are kept.
• Why does "A man a plan a canal Panama" pass? — With Ignore Case, Ignore Spaces, and Ignore Punctuation all enabled, only the letters a-z are compared, making it a valid palindrome.
• What counts as a palindrome? — A palindrome reads the same forwards and backwards after applying the chosen normalisation (case, spaces, punctuation).