Drop a document to detect and strip personal data — it never leaves your browser
Document Anonymiser — Legal
Strip personal data (names, emails, phone numbers, SSNs, card and account numbers) from a document — as text, image pixels, and metadata — entirely in your browser. Powered by IOGate. Nothing is uploaded. Free for a limited time.
How it works
- Drop a document — the PII detector (Powered by IOGate) runs entirely in your browser, so nothing is ever uploaded.
- Review the redaction summary: every detected name, email, phone number, SSN, card and account number is listed by type with a confidence score, so you can verify nothing was missed before you trust the output.
- Download the redacted file with PII replaced by consistent placeholders like [NAME_1] — plus an optional mapping key you keep locally to reverse it.
Key features
- In-browser detection — the document never leaves your machine (Powered by IOGate)
- Removes PII as text, not a box drawn over live text (which leaks) — the underlying data is actually gone
- Consistent numbered placeholders — [NAME_1] means the same person everywhere in the document
- Optional realistic-fake mode for sharing samples with an LLM or vendor without exposing real people
- Mandatory reviewable summary with confidence scores — a missed identifier is a data breach, so you verify before export
- Downloadable local mapping key (mapping.json) to reverse the redaction yourself — it is never sent anywhere
Common uses
- Anonymise a contract or case file before sharing it with a counterparty, expert, or the other side
- Strip client identifiers from a document before pasting it into an AI assistant
- Produce a GDPR/CCPA-safe redacted copy for disclosure or a public filing
Frequently asked questions
How do I compare document anonymiser online?
Drop a document — the PII detector (Powered by IOGate) runs entirely in your browser, so nothing is ever uploaded. Review the redaction summary: every detected name, email, phone number, SSN, card and account number is listed by type with a confidence score, so you can verify nothing was missed before you trust the output. Download the redacted file with PII replaced by consistent placeholders like [NAME_1] — plus an optional mapping key you keep locally to reverse it.
Are my files private when I use this tool?
Yes. All comparison runs locally in your browser. Your files never leave your device and are never sent to any server — not a policy promise, but an architectural fact. There is no server receiving your data.
No AI means no hallucinations
Compare Files uses a deterministic, logic-based engine — not a language model. It reports every change that is actually in your files, and never invents one.
Your files never leave your device. Everything runs in your browser — no uploads, nothing stored.
No AI, so no hallucinations. A deterministic engine reports every real change and never invents one.
No upload, no server wait. Comparisons run locally and keep working offline once the page has loaded.