Reads the same
forward and backward

How to use every option

1. Get text in — paste or type directly, upload a .txt file, or fetch text from a public URL (HTML tags are stripped automatically).
2. Choose Single or Bulk Check — Single analyzes one block of text in depth; Bulk treats each line as a separate entry and checks them all at once.
3. Pick Character or Word mode — Character mode compares individual letters/digits (for words, phrases, and numbers); Word mode compares the sequence of whole words against its reverse (e.g. "dogs cats cats dogs").
4. Toggle cleaning rules — ignore case, spaces, punctuation, and accented characters so phrases like "A man, a plan, a canal: Panama!" check correctly; add any custom characters to ignore.
5. Turn on "Numbers only" to strip everything except digits — useful for numeric palindromes like 12321 or checking IDs/phone numbers.
6. Enable Live check to see the result update automatically as you type, without clicking the button.
7. Click Check Palindrome to see the verdict, cleaned text, reversed text, a similarity percentage, and how many character pairs would need to change to make it a palindrome.
8. Explore palindromic substrings — see the longest palindromic sequence hidden in your text, or list every substring at or above a minimum length.
9. Review character frequency — a breakdown of how often each character appears in your cleaned text.
10. In Bulk mode, review the per-line results table and export it as a CSV file.
11. Copy or download results — grab the cleaned/reversed text, a full text report, or download it as a .txt file.
12. Revisit past checks from Local History, or clear it whenever you like.

One palindrome tool instead of five

Related tools