Email & PII Masker
Paste text that contains personal info and the tool replaces it with masked versions: `alice@example.com` → `al***e@e****e.com`, phone digits replaced with `*`, credit cards keeping only first/last 4. Useful when posting screenshots, sharing logs, or writing documentation. Choose what types to detect and how many edge characters to leave visible. All processing is local — your text never leaves the browser.
Masked output appears here.
How to use
- Paste text containing personal info.
- Pick what to detect (email, phone, card, IP) and how many edge characters to keep visible.
- Copy the masked text and replace the original wherever you were about to share it.
Frequently asked questions
- Why is the IP detector off by default?
- IP-like numbers (`1.2.3.4`) match many version strings (`2.0.10.5`). Off by default to avoid false positives — turn on only when you know your text contains real IPs.
- Are credit card masks safe to share?
- Keeping first 4 + last 4 is the standard 'card display' format used by Stripe, banks, etc. Don't try to mask less than that — last-4-only is often required to look up a transaction.
- What about names and addresses?
- Names and addresses don't have a reliable regex. For those, manual redaction (or LLM-based extraction) is still the right tool — out of scope here.
- Will it mask in URLs or query strings?
- Yes — `?email=foo@bar.com` gets masked just like prose. Same for emails inside JSON, logs, or HTML attributes.
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