Secret PDF Alternatives
Secret PDF
Secret PDF enforces DRM controls with AES, random encryption algorithms and public key technology. We design this application to help those PDF owners who would like to restrict their documents from being redistributed and opened by unauthorized users.
It is known to all that it is quite unsafe to protect your PDF documents with only open password and owner password, since they could be both cracked and shared easily. What’ more, so many free pdf password remover software there could remove your protection and restrictions.
We use key technology to deal with the issue. User generates a local key in his/her computer device and sent it to the owner. The owner produces a new key based on the local key. The user could only open the PDF document with the owner’s public key in the authorized device (the computer the user generates the local key). In other computers, the open request will be denied.
Our built-in PDF viewer could also restrict the readers from accessing permissions. In current version, our viewer only allows users to read rather than copying, editing, saving, converting and printing.
Best Free Secret PDF Alternatives
Are you still using Secret PDF? Let's compare it to the best other options below. Maybe one of these Secret PDF alternatives will work on your device, too.
PDFTK Builder
FreeOpen SourceWindowsPortableApps.comPDFTK Builder is a free graphical interface to for PDFtk, making it much easier to use.
Features:
- Lightweight
- Combine PDF
- Pdf-creation
- Portable
- Reorder pages
- Split and merge PDF files
QPDF
FreeOpen SourceWindowsLinuxBSDQPDF is a command-line program that does structural, content-preserving transformations on PDF files.
Features:
- Command line
- Command line interface
PDFTools
FreeWindowsPDFTools is a PDF management application. It can encrypt, decrypt, join, split, stamp, create and rearrange a PDF file. Version 1.1+ includes a very powerful and simple...
Features:
- Create PDF files
- Pdf encryption
- Interface Overlay
- Combine PDF
- Pdf-creation
- Edit PDF
- PDF OCR
- Sign PDF files
iSafePDF
FreeOpen SourceWindowsiSafePDF is a free open source PDF protection software. It allows you to encrypt PDF document, sign them using a certificate and timestamp the signature. All those...
Features:
- Pdf encryption
- Pdf protection
Advanced PDF Utilities Free
FreeWindowsAdvanced PDF Utilities Free comes in handy when you need to deal with PDF files such as to merge or split pages, convert PDF to text & convert image to PDF or vice...
Features:
- Pdf encryption
- Convert images to PDF
- Combine PDF
- OCR
- PDF OCR
- Convert PDF to image
- Convert PDF to Text
- Convert PDF to Word document
- Scan to PDF
- Sign PDF files
- Split PDF files
PDFEncrypt
FreeOpen SourceWindowsPDFEncrypt is a free, open-source Windows application that encrypts any PDF file using industry-standard encryption algorithms.
Features:
- AES encryption
- Pdf encryption
- Pdf-creation
- Pdf encryption
LockPDF
FreeWebLockPDF is a free online tool to encrypt and lock PDF files. Password protect your PDF's with a strong encryption in just a few seconds. With our easy-to-use online...
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