Privacy Data Masking Tool
Mask phone numbers, emails, IDs, cards, accounts, IP addresses, and URL tokens in your browser.
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Mask personal data and secrets before sharing text
Privacy Masker helps hide phone numbers, email addresses, Korean resident IDs, business numbers, card numbers, bank accounts, IP addresses, and URL tokens before sharing logs, support messages, or examples. Paste text, choose patterns, then copy the masked result.
Useful For
- Redact customer data before sharing support logs
- Hide tokens and keys from copied URLs or text
- Create safer sample text for documentation
Good To Know
Automatic masking is a helper, not a full privacy review. Before sharing sensitive material externally, manually check names, addresses, order IDs, free-form notes, and any remaining identifiers.
Result Check
Try an example first to understand the input flow. Before submitting, sharing, or copying important output, compare the result with the original source once more.
How It Works
Inputs are calculated or converted in the browser whenever possible. Compare important results with the original source before using them. Reviewed on Jun 30, 2026.
Privacy masking checks
Sensitive data
- Check names, phone numbers, emails, addresses, and account numbers
- Review titles, tables, and notes as well as the main body
Masking level
- Leave partial clues only for internal work, mask more aggressively for public sharing
- Keep the original in a separate file if you must retain it
Before sharing
- Search the masked text again for leftover private data
- Use a separate check for private data embedded in images or PDFs
It can mask patterns such as phone numbers, email addresses, Korean resident ID formats, card numbers, account numbers, IPs, and URL tokens.
Yes. It helps quickly hide sensitive patterns in support logs, error logs, and payment notes before sharing.
No. It is pattern-based, so names, addresses, and unusual formats in context should still be reviewed manually.