Batch anonymization is the removal of PII from a whole folder of deal documents in one run. A shared map keeps one party on one label everywhere, which is what makes a corpus readable. That map is the additional information GDPR Art. 4(5) describes. Hold it and the set stays pseudonymous; destroy it and Recital 26 applies.
When this applies
You clean hundreds of items before the space opens, and one counterparty appears in eighty of them. Decide up front whether you keep the map. That choice sets the legal status of the whole set.
How anonym.plus handles it
- Point anonym.plus at the folder on your machine.
- It scans each item for names, IDs, and account data.
- A shared map keeps repeat parties steady across the run.
- Review the summary and fix any low-confidence flags.
- Save the clean set on your device.
What you need to provide
- A folder of documents (PDF, DOCX, XLSX, or mixed).
- The shared label map turned on for steady results.
- An operator (Replace works well for a corpus).
PII entity types detected
| Category | anonym.plus entity type | Example |
|---|---|---|
| Names | PERSON | party across files → [PARTY_1] |
| Org | ORGANIZATION | repeat firm → [ENTITY_1] |
| Contact | EMAIL_ADDRESS | emails → [EMAIL] |
| Finance | IBAN_CODE | accounts → [ACCOUNT_n] |
| Identifiers | NATIONAL_ID | tax ids → [ID_n] |
| Location | LOCATION | addresses → [ADDRESS] |
Compliance achieved
- The shared map is the additional information GDPR Art. 4(5) defines.
- Kept apart and secured, it meets the measures Art. 32 expects.
- Destroy it and the cleaned corpus falls outside GDPR by Recital 26.
- Whole-folder work stays offline. Batch up to 20 files at a time.
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Limitations & cautions
Mixed folders (some scanned, some native) lean on OCR for image pages, so review low-confidence flags from scans. The shared map keeps results even, but you must guard it, since it can re-link the set if kept.
Frequently asked questions
Is a batch-cleaned corpus anonymous or pseudonymous?
It depends on the map. While that map exists, Art. 4(5) treats the set as pseudonymous. Destroy it and no one can re-link the files, so Recital 26 applies.
How does batch mode keep one party steady?
A shared map logs each party once, so the same person or firm maps to the same label in every document across the folder.
How many items can one batch hold?
A batch runs up to 20 at a time. Larger spaces split into runs, each on your device.