TtFree
Palindrome checker
Check text after ignoring punctuation, spacing and case.
Check text after ignoring punctuation, spacing and case. Compare the normalized sequence with its reverse and view the exact sequence being tested. NFKC normalization is applied before non-letter and non-number characters are removed.
How to use
- Enter your text, values, or image.
- Adjust the options and run the tool.
- Copy or download your result.
Worked example
Example input
Input: A man, a plan, a canal: Panama!
Example result
{
"normalized": "amanaplanacanalpanama",
"palindrome": true
}Limitations and details
Comparison uses Unicode code points rather than visual grapheme clusters; an empty normalized sequence counts as a palindrome.
Inputs and options
- Input
- Text
Frequently asked questions
Is this tool free and private?
Yes. All 300 tools are free in this phase. Processing happens in your browser; your input and files are not sent to our servers.