Blog
Blog & guides
Practical guides and articles about PDF encryption and password recovery.
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Best Ways to Never Lose a PDF Password Again
Practical strategies to keep track of your PDF passwords: password managers, secure notes, encrypted vaults, and organizational policies that actually work.
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Free PDF Tools Compared: SmallPDF vs iLovePDF vs PDF24 vs PDFUnlock
An honest comparison of the most popular free PDF tools: what each does best, their limitations, and where PDFUnlock fits in the landscape.
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How GPU Password Cracking Works (In Plain English)
A non-technical explanation of how GPU-based password cracking works: hashcat, dictionary attacks, brute force, rule-based mutations, and the ten-phase recovery system.
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Owner vs User Password: What's the Difference?
A clear explanation of the two types of PDF password protection — owner (permissions) and user (encryption) — and how each can be handled.
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PDF Encryption for Businesses: A Complete Guide
Everything businesses need to know about PDF encryption: compliance requirements, enterprise tools, batch encryption, access control, and password management policies.
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5 Tips to Secure Your PDF Files in 2026
Practical security advice for protecting your PDF files: strong passwords, AES-256 encryption, trusted tools, and backup strategies.
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What Happens When You Forget Your PDF Password?
The complete journey from panic to solution: what your options are when you forget a PDF password, from free tools to professional recovery services.
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Why Do PDFs Have Passwords? A Brief History
The history of PDF encryption from Acrobat 2.0 to modern AES-256: export regulations, evolving use cases, and why we ended up with two types of passwords.
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PDFUnlock vs LostMyPass — honest comparison
A practical side-by-side of PDFUnlock and LostMyPass: languages, transparency, pricing and success rates.
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What is PDF encryption?
A practical guide to PDF encryption: owner vs user passwords, RC4 vs AES, and what "strong" really means.
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