Check if text reads the same backwards. Ignores case, spaces and punctuation.
A palindrome reads the same forwards and backwards. The checker ignores capitalization, spaces and punctuation, so 'A man, a plan, a canal: Panama' counts as a palindrome.
Yes. Numbers like 12321 are checked the same way, useful for spotting palindromic dates or numeric palindromes.
Yes, instantly and entirely client-side.