PDF Password Protection
Protect a PDF by setting a password
Features
Restrict viewing with a password
Set an opening password to prevent third parties from viewing the PDF
Encrypt the entire PDF
Encrypt the whole file including text and images to protect the contents
Keep the original layout
Output as is after protection without changing the page structure or formatting
Check the result on the spot
Check the protected PDF in the on-screen preview before downloading
How to Use
Select a PDF file
Upload the PDF you want to protect by dragging or clicking
Enter a password
Enter the password to require when opening in the password field
Press the run button
Pressing the run button encrypts the PDF on the server side
Save the protected PDF
Check the preview and save with the download button
Use Cases
Sending confidential documents by email
Add a password to contracts and quotations to prevent unintended viewing
Protecting personal information
Encrypt documents containing addresses or account information to store them safely
Limiting sharing of internal materials
Set a password on materials given only to relevant people before distributing
Protecting records before submission
Protect invoices and receipts before submitting them to business partners
Fundamental Knowledge
How PDF Password Protection Works
When a PDF has a password set, the contents are encrypted using a key derived from that password. Even if the file is copied, the content cannot be read without knowing the password.
Two Types: Viewing and Edit Restrictions
The PDF specification has two types of passwords: a viewing password required to open the document, and a permissions password that restricts operations such as printing and editing. The viewing password is essential when you want to ensure confidentiality.
Safety and Privacy
Server-side processing
Input is processed on the server; only information necessary for the inquiry is sent.
Temporary processing only
For the PDF encryption process, temporary processing occurs on the server, then data is discarded after results are returned.
Communications encrypted with HTTPS
All sent and received data is encrypted by TLS and cannot be read by third parties.
No transmission to third parties
Input content is not sent to external services such as ad networks or trackers.
Completed within our own servers
The uploaded PDF and password are processed only on our own servers
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Updates
- update #347
Fixed issue where PDF content becomes empty when setting password protection
Featured Tools
RAKKOTOOLS is free to use!
Available free of charge for individuals and corporations, commercial and non-commercial use alike.No prior permission or usage application is required. Feel free to use it in various situations.
Use in streaming and videos
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Use in schools, work, and events
Can be used in various situations such as classes, team division, internal work, and events.
Introduction on Web, books, and SNS
Feel free to introduce it as a useful tool on web media, books, SNS, and other platforms.
Commercial use
Can be used for commercial purposes such as research, calculation, processing, and conversion in business and production.
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If using in streaming and videos
Link to RAKKOTOOLS in the description, or Mention or display that you are using RAKKOTOOLS in the stream or video.
Credit example for the description
Usage guidelinesYou are free to use it for normal purposes. However, use for purposes that violate laws, infringe on third-party rights, impose significant load on the service, or otherwise interfere with service operation is prohibited.
We do not guarantee the accuracy or completeness of information and calculation results obtained from each tool.
This notice is a translation of the original Japanese text. If there is any discrepancy between the translation and the original, the Japanese original takes precedence.