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First, you need to add a file for lock: drag & drop your PDF file or click inside the white area for choose a file. Then click the 'PROTECT' button. When PDF document password protection is completed, you can download your result files.
This Lock app works fast. You can add password protection to PDF in a few seconds.
Of course! The download link of result files will be available instantly after lock. We delete uploaded files after 24 hours and the download links will stop working after this time period. No one has access to your files. File Lock is absolutely safe.
Our PDF Locker works online and does not require any software installation.
You can use any modern browser to add password protection to PDF, for example, Google Chrome, Firefox, Opera, Safari.
Upload your password protected file, enter current password and click on "PROTECT" button. You will get locked file as soon as the locking is performed.
It works from all platforms including Windows, Mac, Android and iOS. All files are processed on our servers. No plugin or software installation required for you.
All files are processed using Aspose APIs, which are being used by many Fortune 100 companies across 114 countries.