Anonymize documents automatically with AI
Comply with GDPR before publishing documentation or sending it to AI.
◇ PDF · Word · ODT · Excel · CSV · JSON · Images and scans with OCR · Auditable traceability
Try anonimizia free for 14 days
Anonymize documents with no page limit. No card required. We'll reply within 24 h with access configured for your organization.
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What is document anonymization?
It is the process of irreversibly removing or redacting personal data (names, IDs, addresses, phone numbers, IBAN, license plates) from a document so that individuals cannot be identified. It is a GDPR requirement before publishing administrative files, resolutions or notifications.
- Configurable & multi-layer
- Anonymization reports with review
- Integrable via API or available in the cloud
Four steps. Zero exposure.
Upload
Arrives via API from your DMS, or drag a PDF, Word or a batch of documents.
Detect
The AI locates names, IDs, addresses and 25+ personal data types.
Review
Pick which categories to redact, adjust each entity manually and confirm before exporting.
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Publish
Anonymous document ready, with anonymization report and full audit trail.
Built for public documents, not generic ones.
anonimizia understands how a file, tender or decree is structured. And that changes everything.
Configurable & multi-layer
Choose which categories to anonymize per document type and let models trained on Iberian administrative vocabulary detect national IDs, IBAN, license plates and cadastral references.
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Anonymization reports with review
Review panel with confidence level per entity: accept, edit or discard each redaction. Every document generates a report of what was redacted, why and who reviewed it.
Integrable via API or available in the cloud
Connect it via REST API to leading public-sector document management systems, or run it in our sovereign EU cloud.
One technology, three ways to work.
Pick the entry point that fits your organisation: integrate it into your systems, use the detection engine, or work straight from the browser.
Anonymization API
For integrationsREST API to connect your document management system, e-government portal or internal processes to the anonymization engine, with token authentication and documented endpoints.
REST · Token auth · Documentation
In-house detection engine
Models trained in the EULanguage models trained on Iberian administrative and legal vocabulary to locate personal data in real documents. It runs on European Union servers, with nothing sent to external APIs.
Own models · EU processing
Web application
Nothing to installA complete browser platform: batch upload, before-and-after document preview, a review panel for every redaction, and user, group and permission management.
Web · No install · Cross-platform
Anonymize or pseudonymize: you choose how.
Anonymizing removes the data irreversibly and takes the document out of GDPR scope. Pseudonymizing replaces it with an equivalent that keeps the document readable and usable, with controlled re-identification. anonimizia does both, field by field.
The personal data disappears from the document and from its text layer: it cannot be recovered from the published file.
Redaction (black bars)
An opaque bar covers the value and the underlying text is deleted, not just hidden. This is the standard mode for publishing on transparency portals or official gazettes.
Asterisk masking
The value is replaced with asterisks or dots, fully or partially (***4567X for a national ID). Useful when regulations require showing the minimum identifying digits of a contractor or grant recipient.
Suppression or labelling
The value is deleted entirely or replaced with a category tag ([NAME], [ADDRESS], [IBAN]). Keeps the document structure and makes later analysis easy without real data.
The document stays coherent and exploitable, but nobody is identifiable without the additional information, which is kept separately.
Synthetic data
Every real value is swapped for a fictitious yet valid, coherent one (names, national IDs, addresses or IBANs with correct formats). Ideal for testing, training or sending the document to a generative AI.
Coded pseudonyms
Each person becomes a stable code (Applicant 1, Resident A) across the document or the whole file, so the narrative still holds without identifying anyone.
Reversible tokenization
Data is swapped for tokens while the original stays encrypted in your key vault. Only authorized staff can reverse it, with an auditable log of every re-identification.
Anonymize documents in any sector.
More than 200 public administrations already trust oGov.
From governments to private firms: any organization handling personal data can reduce risk and stay compliant.
Public sector
City councils, provincial governments, universities and agencies that publish minutes, resolutions and files with full legal certainty.
Law and consulting firms
Law firms, consultancies and advisors preparing judicial, contractual or tax documentation before sharing it.
Healthcare
Hospitals, clinics and insurers anonymizing clinical records, reports and studies for research or exchange.
Anyone using AI
Companies training models or using AI assistants that need to strip personal data before processing.
For everything that goes public.
Transparency portal
Publish minutes, resolutions, agreements and contracts on the portal without exposing third parties' personal data.
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Open data
Anonymize tabular and document datasets before publishing them on your open-data hub.
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File access requests
Deliver files to transparency requesters or interested parties with third-party data automatically redacted.
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Sending data to AI
Before sending documents to a generative AI model, strip personal data so no external provider processes it.
Compliance that backs oGov.
oGov at ENS MEDIUM, servers at ENS HIGH, plus a data governance certificate.
ENS MEDIUM at oGov and ENS HIGH on servers
oGov is certified at MEDIUM level of the Spanish National Security Framework (ENS) and the servers hosting the service are certified at HIGH level, and they also issue a data governance certificate for public administrations.
Auditable, encrypted and traceable
Encryption in transit and at rest, processing on ENS High certified servers and a full log of every action.
Plans that adapt to your organization.
Three ways to deploy anonimizia. All of them include detection, real redaction, metadata cleaning, pseudonymization options and an auditable log.
Essential
On request
For teams starting to anonymize documents on a regular basis.
- Web application with user management
- Documents, spreadsheets, structured data and images
- OCR included on scans and images
- Anonymization: redaction, labels or asterisks
- Metadata cleaning and auditable log
Professional
On request
For organizations that publish or share documentation continuously.
- Everything in Essential
- Unlimited batch processing
- Pseudonymization: stable codes, tokenization and synthetic data
- Whitelists and custom rules per entity
- Documented API for integrations
- Human review before download or publication
Public sector
On request
For administrations that need integration and security evidence.
- Everything in Professional
- Integration with oGovSystem and, through the API, with platforms such as Gestiona or SedeDipualba
- Data governance certificate
- oGov ENS Medium and ENS High infrastructure
- EU hosting, with on-premise deployment to be assessed
- Onboarding and dedicated support
Pricing depends on volume, number of users and deployment model. Tell us your case and we will send you a tailored proposal.
Anonymize your documents in seconds
Upload one and see how personal data is redacted instantly. No sign-up, no card.
Useful guides to anonymise documents
Practical guides on anonymisation, data protection and safe document publishing.
What is anonymisation: meaning, examples and techniques
Complete guide on what anonymisation means, anonymisation techniques and differences with pseudonymisation.
Read guideHow to remove metadata from a PDF
Clean author, date, version history and other personal metadata before publishing a PDF.
Read guideHow to anonymise a PDF step by step
Learn how to properly redact personal data in PDFs to comply with the GDPR.
Read guideEverything about how to anonymize documents
What is the difference between anonymization and pseudonymization?
Anonymization is irreversible: personal data disappears and can no longer be linked to an identifiable person, so the document is no longer subject to GDPR. Pseudonymization replaces data with identifiers (e.g. a code), but the link can be reversed with additional information, so it remains personal data processing.
Which document formats does anonimizia support?
With anonimizia you can anonymize PDF (native and scanned with OCR), Word, Excel, ODT, CSV and JSON, plus images. It returns the document with personal data redacted on the text layer and metadata cleaned, ready to publish on transparency portals or official gazettes.
Is anonimizia designed for GDPR and ENS requirements?
anonimizia is built for the public sector and designed to support compliance with GDPR, LOPDGDD and ENS. oGov holds ENS Medium and the servers running the service hold ENS High, with encryption in transit and at rest and an auditable log of every action.
Can I anonymize documents before sending them to an AI like ChatGPT?
Yes. Anonymizing or pseudonymizing first with anonimizia removes or replaces personal data in files, contracts or emails before they are sent to generative AI models. It is a data minimization measure that helps reduce exposure of sensitive information to third parties.
Which rules is this page based on?
Everything on this page is based on published legislation and on the guidance of the Spanish Data Protection Agency. These are the original texts: