Electronic signature
Sign PDFs with a digital certificate
Sign your PDFs with your certificate through AutoFirma and check the PAdES signatures on documents you receive, on the same platform where you prepare and anonymize them.
An engagement letter, meeting minutes, an expert report or a proposal: for many organizations, the last step in a document’s life is signing it with a digital certificate. In Spain, AutoFirma, the Government’s signing application, is the usual route. Anonimatum brings it into its PDF tools, so you can prepare the document, sign it with your certificate and download it without jumping between different programs or services.
Signing is only half the job; you also need to check the signatures you receive. The tool validates PAdES signatures, the advanced signature standard for PDF, so you can review a signed document before relying on it. That is useful when contracts, certificates or decisions arrive from third parties and you want to verify them before adding them to a case file or acting on them.
The documents people sign are usually the most sensitive ones. In Anonimatum they are processed on our own EU servers (OVHcloud, France and Poland), with no third parties or external APIs, and they are not stored: they come straight back to you. The audit log keeps only the SHA-256 fingerprint, never the content. If personal data has to be anonymized or pseudonymized first, you do it on the same platform and sign the final version.
How to sign a PDF
- 1
Open Electronic signature
Sign in at app.anonimatum.com and go to the “PDF tools” menu.
- 2
Sign with AutoFirma
Choose the PDF and sign it with your digital certificate via AutoFirma, the Spanish Government’s signing application.
- 3
Download or validate
Get the signed PDF or, for a document you received, validate its PAdES signatures.
Security
Your PDFs never leave our servers in the EU
The same safeguards as the anonymizer, also for merging, converting or compressing.
Our own servers in the EU
Every tool runs on Anonimatum servers in France and Poland (OVHcloud). No third-party services or APIs: LibreOffice and OCR run on our own server.
We don’t keep the document
The PDF is processed in memory and returned straight away. Conversions use a temporary folder that is deleted when they finish.
History under your control
Group activity (operation and file name) is deleted according to the retention your administrator sets, from 1 to 365 days. The audit log only keeps the SHA-256 fingerprint.
Access with your account
You sign in with your Anonimatum account, with two-step verification, and each use is deducted from your plan’s PDF tools quota.
ENS Medium category
Politeia Soft is certified under Spain’s National Security Framework (ENS), Medium category, and the platform is designed for the GDPR.
Next to the anonymizer
Merge, reorder or convert, then anonymize or pseudonymize the result on the same platform before sharing it.
What is included
- PDF signing with a digital certificate
- AutoFirma integration
- PAdES signature validation
- Same suite as merge, reorder and anonymize
Who it is for
Law and advisory firms
Sign engagement letters, reports and filings with the professional’s certificate.
Public sector teams
Work with AutoFirma, the Spanish Government’s signing app, from the same PDF suite.
Experts and consultants
Sign opinions and reports before delivering them to the client.
Compliance teams
Validate PAdES signatures on contracts and certificates you receive.
Why sign with Anonimatum
Prepare, anonymize, sign and validate without scattering your documents across several services.
AutoFirma built in
Sign with your digital certificate via the Spanish Government’s signing application.
PAdES validation
Check the signatures on PDFs you receive in the same tool.
No third parties, no storage
Own EU servers; the document is processed in memory and not kept.
ENS and GDPR
Politeia Soft holds ENS Medium category and the platform is designed for GDPR.
Common use cases
Engagement letter
Sign the engagement with the professional’s certificate before sending it to the client.
Expert report
Sign the final opinion once it has been reviewed and paginated.
Incoming contract
Validate a contract’s PAdES signatures before filing it.
Anonymized document
Anonymize a decision, then sign the version that will be published.
Signing PDFs: frequently asked questions
Which certificate do I sign with?
Your own digital certificate, through AutoFirma, the Spanish Government’s signing application.
Can I check the signature on a PDF someone sent me?
Yes. The tool validates PAdES signatures, the advanced electronic signature format for PDF documents.
Where is the document processed?
On Anonimatum’s own servers in the EU (OVHcloud, France and Poland), with nothing sent to third parties or external APIs. The file is processed in memory, returned immediately and not stored.
Do I need an account? Does it use my quota?
Yes. You need an Anonimatum account, with two-step verification available, and the tool uses your plan’s PDF tools quota.
Can I anonymize before signing?
Yes. Merge, reorder or anonymize the document on the same platform, then sign it; it is best to sign the final version.
Sign and validate your PDFs
With your digital certificate and AutoFirma, on a platform with its own EU servers and ENS Medium category.
Sign a PDF