Überprüfen Sie digitale Signaturen in Ihren PDF-Dateien. Prüfen Sie die Zertifikatsgültigkeit, sehen Sie Unterzeichnerdetails und bestätigen Sie die Dokumentenintegrität. Die gesamte Verarbeitung erfolgt in Ihrem Browser.
Klicken Sie, um eine Datei auszuwählen oder per Drag & Drop
PDF Documents
Ihre Dateien verlassen nie Ihr Gerät.
Upload a trusted X.509 certificate to validate against a custom trust source.
Upload certificate (.pem, .crt, .cer)
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Select a digitally signed PDF file from your device
The tool extracts and parses all digital signatures in the document
Review signer information, certificate validity status, and signature verification results
This tool validates PKCS#7 digital signatures created with X.509 certificates, the standard format used by most PDF signing tools and certificate authorities.
A self-signed certificate is one where the issuer and subject are the same. While the signature is technically valid, it means the certificate wasn't issued by a trusted Certificate Authority (CA).
No, all processing happens entirely in your browser. Your PDF files never leave your device, ensuring complete privacy and security.