About this tool
Mask emails, phone numbers, links, IP addresses, card numbers and IBANs in a text before you share it — and optionally hide swear words or your own list of words.
Patterns find each kind of data; card numbers are only masked when they pass the Luhn check and IBANs when they pass the mod-97 check, which avoids hiding ordinary numbers. Choose a [LABEL], stars or a partial mask that keeps the last digits.
Example: “Mail ana@example.com, card 4111 1111 1111 1111” → “Mail [EMAIL], card [CARD]”.
Automatic masking cannot recognise names or every format; read the result before sharing sensitive documents.
Quick steps
- Paste your text or open a file (or press Try an example).
- Choose the options — the result updates as you type.
- Copy the result or download it as a file.
Everything runs in your browser. Nothing you type is sent to 1CLIK.
FAQ
How does the Text Anonymizer & Profanity Filter work?
Patterns find each kind of data; card numbers are only masked when they pass the Luhn check and IBANs when they pass the mod-97 check, which avoids hiding ordinary numbers. Choose a [LABEL], stars or a partial mask that keeps the last digits.
What should I keep in mind?
Automatic masking cannot recognise names or every format; read the result before sharing sensitive documents.
Is my text uploaded or saved?
No. It is processed on your device in a separate background task that is stopped if it takes too long; nothing is stored or sent.