FreeOnlineTool

Korean PII Batch Masker (Phone, RRN, Account, Email)

Korean PII Batch Masker (Phone, RRN, Account, Email) gratis en línea. Herramienta de texto instantánea en el navegador. Sin registro.

Paste or drop a log before sharing

Find Korean phone numbers, RRNs, bank accounts, and emails in notes or CS logs, then ★-mask them in the browser. TXT/CSV can be UTF-8 or Windows EUC-KR—nothing is uploaded.

Drop TXT, CSV, TSV, or LOG — or click

UTF-8 or Windows EUC-KR/CP949 · up to 2MB

Or paste below (⌘V / Ctrl+V)

Cómo usar

How it works

This is not a blind find-and-replace. It targets Korean-shaped personal data before you share a log, ticket, or meeting note.

  1. Drop a file — TXT, CSV, TSV, LOG, MD, or JSON. UTF-8 is preferred; Windows EUC-KR/CP949 dumps are auto-detected when Hangul scores better.
  2. Or paste text from CS notes, Notion, Slack, or email drafts
  3. Toggle types — phone, resident registration number (RRN), bank account, email
  4. Mask — replace hits with ★ and highlight them by type
  5. Copy or download the masked file for safe external sharing

Everything runs in your browser. Nothing is uploaded. Use this when you need a Korean PII batch masker for a support export, not a generic redaction plugin.

FAQ

How are RRNs detected?

We look for a valid calendar YYMMDD plus a sex digit (1–8) in a 13-digit pattern, and use the classic checksum when it applies. It is a first-pass mask, not an official identity check.

Will account numbers false-positive?

Only hyphenated 10–14 digit groups are candidates, and phone/RRN spans win on overlap. Always skim the highlight preview before you send the file.

Can I keep emails visible?

Yes—turn off the email toggle and remask. The last paste and toggle set stay in this browser only.

What encodings can I drop?

UTF-8 (with or without BOM) and Korean Windows EUC-KR/CP949. If the file is larger than 2MB, split the log first. The download keeps the original extension and appends -masked.

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