PDF Sicherheit

Hinzufügen password protection to your PDF documents with AES-256 encryption, or remove an existing password you already know. Separate user and owner passwords let you control who can open the file versus who can print, copy, or edit it. Everything happens on your device — your files never leave your browser.

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Kostenlose Credits · Keine Kreditkarte erforderlich

Funktionen

Industry-Standard AES-256 encryption for serious Dokument protection

Separate user Passwort (to Öffnen) and Besitzer Passwort (to Einschränken Aktionen)

Einschränken printing, copying, editing, and adding comments independently

Entfernen an existing password from a protected PDF when you know the current one

Real-Uhrzeit Passwort strength indicator while you Erstellen a Neu Passwort

Live Vorschau shows your PDF locked or unlocked before you Herunterladen it

Everything happens An your Gerät — Dateien never reach a Server

Fully compatible with iOS, Android, and Web browsers, Kostenlos to Nutzung

So funktioniert's

Choose Ihre PDF

Select the PDF you want to protect or unlock, or drag & drop it into the interface. Ihre file stays on your device and is never uploaded anywhere.

Set Passwort and Restrictions

Wählen to Hinzufügen a Neu Passwort or Entfernen an existing one. When protecting, set a strong Passwort and decide which restrictions (printing, copying, editing) to Anwenden.

Encrypt or Entsperren and Herunterladen

Ihre PDF is encrypted with AES-256 or its existing password is removed. Herunterladen your secured or unlocked file the moment it's ready.

Anwendungsfälle

Für wen ist es?

Lawyers and accountants sharing confidential client Dokumente by E-Mail

Personalabteilungen, die Gehaltsabrechnungen und persönliche Mitarbeiterdaten schützen

Businesses securing Verträge and Vorschläge before Senden them to third parties

Anyone receiving a Passwort-Geschützt PDF who needs to Entfernen the lock to Bearbeiten or archive it

Students and researchers protecting theses or unpublished Arbeit before submission

FAQ

Häufig gestellte Fragen

How Sicher is AES-256 encryption?

AES-256 is one of the strongest encryption standards Ein Nutzung Heute, trusted by governments and financial institutions worldwide. Breaking it through brute force is practically Unmöglich with Aktuell technology.

Can I Ändern the Passwort of an already Geschützt PDF?

Ja. Erste Entfernen the Aktuell Passwort Mit the Entsperren Modus, then Schützen the Datei again with a Neu Passwort. You need to know the existing Passwort to do this.

What's the difference between the user Passwort and the Besitzer Passwort?

The user Passwort is Erforderlich to Öffnen and Anzeigen the Dokument at Alle. The Besitzer Passwort controls Berechtigungen like printing, copying, and editing once the Dokument is Öffnen. They can be the same or different depending An your needs.

What happens if I forget the Passwort I set?

Pofide cannot Wiederherstellen or bypass a forgotten Passwort — encryption is performed entirely Ein your Browser and we never store your Dateien or passwords. Keep your Passwort somewhere safe before encrypting an Wichtig Dokument.