How to
A tool that adds a password to a PDF so it asks for it when opened. If you know the password, you can also remove it. The PDF and the password are processed in your browser and are not sent anywhere.
Use Cases
Capabilities
Steps
The order of operations and checkpoints are listed so you can proceed while looking at the screen.
STEP 1
Press Choose a PDF or drag one in. The tool checks whether it already has a password and only lets you choose the action that fits.
Press to choose a file, or drag it here. One PDF is handled at a time.
A PDF without a password can only get one added, and a PDF with a password can only have it removed.
STEP 2
To add one, enter the same password twice. To remove one, enter the current password.
Enter the same password in both fields. It cannot run until they match.
Enter the current password. If it is wrong, The password is incorrect appears.
STEP 3
Press Add password or Remove password at the top to see the result on the right. A protected PDF asks for the password in the preview too.
Saved files end in -protected when a password was added and -unlocked when it was removed. The original file is not changed.
We opened PDFs protected with this tool in the following places.
| Opened in | Result |
|---|---|
| Chrome (same viewer as Edge) | Asked for the password and opened with the right one |
| Built-in PDF viewer on Mac (same as Preview) | Asked for the password and did not open with a wrong one |
| A PDF locked on Mac, unlocked with this tool | Removed successfully |
We have not checked Adobe Acrobat yet. Before sending an important document, check that it opens in the same app the recipient uses.
Notes
Important points are grouped with reasons so you can make decisions before using the tool.
Processing
Encrypting and unlocking happen only in your browser, and the password is not saved.
Removing
There is no feature for finding forgotten passwords.
Keep a note
Keep a note of the password and how you will share it.
FAQ
Questions that make decisions easier before use are summarized first.
No. They are processed in your browser and are not sent anywhere. The password is not saved either.
AES-256. We checked that the PDF opens with the password in Chrome and in the built-in PDF viewer on Mac.
No. You can only remove a password you know. There is no feature for finding unknown passwords.
The page content stays as it is. Document details such as author and title are not carried over.
Next guides
Related guides are listed next so you can continue without getting lost.
Steps for arranging several PDFs in the order you want, combining them into one, adding a password when saving, and checking the merged PDF.
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Steps for turning photos and screenshots into a PDF with one image per page, choosing the paper and margin, and seeing how large the PDF gets.
View guide
Make images smaller without changing the format. Learn to compress to a limit like 600 KB and see how quality affects size and appearance in real tests.
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