# DataAnonymiser

> Local-first PII redaction and anonymization software. Finds names, emails, IDs, addresses and other personal data in text, PDFs, Office documents and images, and redacts it on-device before you paste content into ChatGPT, Claude, Copilot or any other cloud AI tool. User content is never uploaded, logged or sent to any server.

## Product
- [Product overview](https://dataanonymiser.com/#desktop): What DataAnonymiser does and how the redact/restore workflow works.
- [Browser extension](https://dataanonymiser.com/browser-extension): Catches PII before a prompt is sent, in the browser.
- [Data loss prevention (DLP) scan](https://dataanonymiser.com/dlp-scan): Scans a local folder for personal data and reports per-file risk.
- [Pricing](https://dataanonymiser.com/pricing): Individual, Team and Organization plans.
- [Download](https://dataanonymiser.com/download): Desktop installers for Windows, macOS and Ubuntu.
- [Security](https://dataanonymiser.com/security): How local-only processing and the network boundary work.
- [For teams](https://dataanonymiser.com/for-teams): Rolling out AI data protection across an organization's devices.

## Docs
- [What is data anonymisation?](https://dataanonymiser.com/docs/what-is-data-anonymisation): Techniques, limits, and how anonymisation differs from pseudonymisation and masking under GDPR.
- [How local-only works](https://dataanonymiser.com/docs/local-only): The technical boundary that keeps user content off the network.
- [Limitations](https://dataanonymiser.com/docs/limitations): What the tool does not do — read before relying on it.
- [Supported devices](https://dataanonymiser.com/docs/supported-laptops): Minimum hardware for running the on-device model.

## Use cases
- [Anonymize Data for ChatGPT: Local PII Redaction Tool](https://dataanonymiser.com/use-cases/anonymize-data-for-chatgpt): Redact personal details before pasting into ChatGPT, then restore recognised placeholders in the response locally during the same session.
- [GDPR Anonymization Software for Document Workflows](https://dataanonymiser.com/use-cases/gdpr-anonymization): Evaluate document redaction for GDPR data minimisation, with local or customer-hosted processing and human review before sharing.
- [Pseudonymisation Tool: Replace & Restore Data Locally](https://dataanonymiser.com/use-cases/pseudonymisation-tool): Replace identifiers with consistent placeholders and restore them locally during the working session. Review documents before sharing with AI or another reader.
- [Clinical Note De-identification: Local PHI Redaction](https://dataanonymiser.com/use-cases/redact-patient-data-for-ai): Use local PHI redaction to prepare clinical notes for approved AI tasks, with separate checks for patient privacy and clinical accuracy.
- [Anonymize Legal Documents: Local Redaction Software](https://dataanonymiser.com/use-cases/anonymize-legal-documents): Prepare contracts and client correspondence with local redaction software, consistent placeholders and session-based restoration after approved AI review.
- [Anonymize Support Tickets and Customer Emails for AI](https://dataanonymiser.com/use-cases/anonymize-support-tickets): Strip customer identifiers from tickets and email threads before AI triage, summarisation or drafting.
- [Redact Logs, Stack Traces and Code Before Pasting Into AI](https://dataanonymiser.com/use-cases/redact-logs-and-code): Remove customer data, internal hostnames and identifiers from logs and source files before AI debugging.
- [Local PII Redaction Tool: Detect & Remove PII On-Device](https://dataanonymiser.com/use-cases/local-pii-redaction): On-device PII detection and removal for text and documents, offline with zero data egress.
- [Enterprise DLP for AI: Self-Hosted Data Protection](https://dataanonymiser.com/use-cases/dlp-for-ai): Evaluate self-hosted enterprise DLP for AI: discover sensitive data, prepare reviewed inputs and manage remediation on your own infrastructure.

## Compare
- [All comparisons](https://dataanonymiser.com/compare): How on-device redaction compares with other approaches, side by side.
- [PII Redaction Service vs On-Device Redaction: GDPR, Data Flow, Cost](https://dataanonymiser.com/compare/on-device-vs-cloud-redaction): Why sending data to a cloud service to have it de-identified creates the exposure you were trying to avoid.
- [PII Browser Extension vs Desktop App for ChatGPT](https://dataanonymiser.com/compare/desktop-app-vs-browser-extension): Three questions to ask a PII browser extension before you install it, and how an extension backed by a desktop app answers them.
- [DataAnonymiser vs Self-Hosted PII Redaction Libraries](https://dataanonymiser.com/compare/vs-self-hosted-redaction-libraries): Open-source toolkits are free and flexible. This compares the total cost of owning one against a finished local app.
- [Redaction vs Turning Off Training in ChatGPT's Settings](https://dataanonymiser.com/compare/vs-ai-privacy-settings): Opting out of training is a promise about what happens to your data after it lands. Redaction changes what lands.

## Optional
- [Privacy policy](https://dataanonymiser.com/docs/privacy)
- [Terms](https://dataanonymiser.com/docs/terms)