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This wikiHow teaches you how to lock a PDF document with a password to prevent others from opening the file without entering the correct password. There are several free online services to do this, or you can use the paid version of Adobe Acrobat Pro (if available).
Steps
With SmallPDF
- If you want to lock the option to edit PDF files with a password, use PDF2Go.
- The password you enter in the two fields must match before you can continue.
With PDF2Go
- You can also click Download ZIP File in the middle of the page if you want to download the PDF document as a compressed folder. This may be the only option with particularly large PDF files.
With Adobe Acrobat Pro
Advice
- When setting a password for a PDF file, you should use the same rules that you would normally apply to email or computer passwords. This will help protect the PDF file from predictions based on savvy or luck.
Warning
- PDF files can be opened by special software. Even if you’ve locked a PDF document with a password, it’s still a good idea to store the file in a safe and private place.
This article is co-authored by a team of editors and trained researchers who confirm the accuracy and completeness of the article.
The wikiHow Content Management team carefully monitors the work of editors to ensure that every article is up to a high standard of quality.
This article has been viewed 1,173 times.
This wikiHow teaches you how to lock a PDF document with a password to prevent others from opening the file without entering the correct password. There are several free online services to do this, or you can use the paid version of Adobe Acrobat Pro (if available).
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