Anonymization guides

How to replace personal data with realistic synthetic values instead of blacking it out, so documents stay readable for people and AI tools. Each guide shows what changes and a before and after example.

Need black boxes instead? See the redaction guides.

Keep documents readable

Anonymize a PDF and keep it readableAnonymize a PDF without black boxes. Re-Doc replaces names, emails, IDs and addresses with realistic synthetic values and keeps the layout. 10 pages free.Replace the names in a PDF or Word documentReplace every name in a PDF or Word document with a realistic fictional name, consistently across pages, without breaking the layout. First 10 pages free.Sanitize a document before you share itSanitize a PDF or Word document before sharing: replace or remove names, contact details and ID numbers in the content, and keep the document usable.

AI and data workflows

Anonymize documents before you use them with AIRemove personal data from documents before you paste them into ChatGPT, Claude or other AI tools. Re-Doc swaps it for realistic synthetic values first.PII masking for LLM workflowsMask PII in documents before they reach an LLM. Re-Doc's REST API replaces personal data with synthetic values and returns the change list for your pipeline.

Research and compliance

Anonymize interview transcripts for researchAnonymize interview and focus group transcripts. Replace participant names, places and employers with pseudonyms or [LABELS] and keep the quotes readable.Pseudonymize documents and keep the key separatePseudonymize documents: replace identities with consistent synthetic values and keep a separate change list as the key. GDPR context and how to store it.