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Secure PDF
Encrypt, Sign, and Protect PDF Documents
Table of Contents
Secure PDF - 2026 Pricing, Features, Reviews & Alternatives
All user reviews are verified by in-house moderators and provider data by our software research team. Learn more
Last updated: September 2026
Secure PDF overview
What is Secure PDF?
Secure-PDF is Windows software for encrypting, digitally signing, watermarking, and protecting PDF documents. It helps businesses and individuals secure sensitive files, verify document authenticity, and control how PDFs are shared.
Protect PDF documents with up to 256-bit AES encryption and password-based access. Digital signatures using PKCS#12 certificates help verify that a document is authentic and has not been modified after signing. You can also add a visual signature image when a simple signed appearance is required.
Secure-PDF lets you add watermarks and define owner information to identify documents and help prevent unauthorized use. These features are useful for contracts, financial reports, business documents, personal records, invoices, and other confidential files.
The software combines powerful PDF security features with an intuitive Windows interface and does not require advanced PDF knowledge. Secure-PDF is suitable for businesses, law firms, financial advisors, freelancers, organizations, and private users.
A 14-day trial version is available for evaluation.
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Secure PDF’s user interface
Secure PDF's key features
Most critical features, based on insights from Secure PDF users:
All Secure PDF features
Secure PDF alternatives
Secure PDF
Starting from
19.9
/user
One-time payment
ABBYY FineReader PDF
Starting from
16
Per month
Adobe Acrobat Reader
Starting from
1.95
Per month
Adobe Acrobat
Starting from
14.99
Per month
Secure PDF pricing
Value for money rating:
Starting from
19.9
/user
One-time payment
User opinions about Secure PDF price and value
Value for money rating:
Secure PDF support options
Typical customers
Platforms supported
Support options
Training options