Online Tool Store
Palindrome Checker
Check whether a word or phrase is a palindrome, ignoring spaces, punctuation, and case, with the cleaned and reversed text shown.
🔒 This tool runs entirely in your browser. Your files are never uploaded to a server.
Spaces, punctuation, and letter case are ignored when checking.
Cleaned (letters and numbers only)
Reversed
How the palindrome checker works
- Type a word or phrase.
- The tool strips out everything except letters and numbers, and lowercases the result.
- It compares the cleaned text to its own reverse — if they match, it's a palindrome.
FAQ
Why does spacing and punctuation get ignored?
Classic phrase palindromes like "A man, a plan, a canal: Panama" only work when you ignore spaces, capitalization, and punctuation — checking the raw text character-for-character (including spaces) would call almost every real phrase a non-palindrome.
Does it work with numbers?
Yes — digits are treated the same as letters, so something like "12321" is correctly identified as a palindrome.
What's the "cleaned" text for?
It shows exactly what the checker compared — your text with everything except letters and numbers stripped out and lowercased — so you can see precisely why something was or wasn't judged a palindrome.
Is my text sent anywhere?
No. The check runs instantly in your browser as you type — nothing is sent to Online Tool Store or stored.
How we compare
| Feature | Online Tool Store | Palindrome checker sites | Checking by hand |
|---|---|---|---|
| Shows the cleaned and reversed text | ✓ | Often just yes/no | ✓ |
| Instant as you type | ✓ | Check button | Slow for long phrases |
| No ads | ✓ | Ad-supported | ✓ |
For an instant palindrome check that also shows its work, the Online Tool Store Palindrome Checker gives you more than a plain yes or no.