Password Protect PDF

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Password Protect a PDF Online — Free, No Upload

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Is It Safe to Upload Confidential PDFs to Online Tools?

What happens to a PDF you upload to a free online tool, which risks are real, and how to process contracts and IDs without uploading them at all.

Strong Passwords vs Passphrases: Which Should You Use?

Random passwords or multi-word passphrases? Learn how entropy works, how long is long enough, and the limits of our own generator and strength meter.

How to Create a Freelance Invoice as a PDF, Free

What a freelance invoice should include, how to add sales tax correctly, and how to make a clean invoice PDF free in your browser. Not tax or legal advice.

How to Password Protect a PDF (and Remove It Later)

Add or remove a PDF password in your browser, and learn what encryption protects, what it does not, and how to choose a strong password.