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• Fresh new app icon • Opening or sharing PDFs from other apps is now more reliable and secure • Fixed received PDFs showing a size of "0 B", and temporary copies are now cleaned up to save storage
Unlock known-password PDFs and protect files offline on your device.
PDF Unlock & Lock helps you work with PDF passwords directly on your device. Use it to save an unlocked copy of a PDF when you already know the password, or add a new open password to an unprotected PDF. Files are processed locally, so sensitive contracts, certificates, business documents, and personal files do not need to be uploaded to a server. Main features: - Unlock PDFs when you know the current password - Add an open password to unprotected PDFs - Process multiple PDF files in sequence - Save or share processed files - Open PDFs from Files or the Android share menu Important: - This app does not recover, crack, or guess PDF passwords. - You need the current password to create an unlocked copy. - If you forget a new password, the app cannot recover it.