Check it first.

Paste below. Everything runs in your browser — nothing you paste is sent anywhere. Verify it yourself: open devtools and watch the network tab while you paste.

Guessed from your browser's locale — never from your IP. Nothing is looked up.

Replacement style
Your text
Redacted preview

“Nothing found” means none of our published patterns matched — it is not a guarantee the text is safe to share.

What it finds

The checker runs the same published pattern list against your text, looking for the kinds of things that shouldn't end up in a chatbot conversation:

Nothing you paste leaves this page

Detection runs in your browser, using a downloadable pattern list — the same one this page loads. There is no server call involved in a scan.

Verify it yourself: open devtools, go to the network tab, and paste something in. No request will appear. This page also loads no analytics of any kind.

Frequently asked

Is my text uploaded when I check it?
No. Detection runs entirely in your browser, from a downloadable pattern list — nothing you paste is sent anywhere. You can verify this yourself: open devtools, go to the network tab, and paste something in. No request will appear.
What does the checker detect?
Credentials and API keys, payment cards, IBANs and bank accounts, tax and national ID numbers, health identifiers, and confidential documents such as contracts, patient records and source code.
Does a clean result mean the text is safe to share?
No. A clean result only means none of the checker's published patterns matched — it is not a guarantee the text is safe to share.
What should I do if it finds something?
Use the redacted copy the tool generates instead of the original text, and read the linked answer page for the category it found to understand what to do next.

Before you paste