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How to Password Protect a PDF in Adobe Reader - Choose a region |
- How to Password Protect PDF in Adobe Reader
Securing PDFs with passwords, Adobe Acrobat.
You can limit access to a PDF by setting passwords and by restricting certain features, such as printing and editing. However, you cannot prevent saving copies of a PDF. The copies have the same restrictions as the original PDF. Two types of passwords are available:. Document open password. A Document Open password also known as a user password requires a user to type a password to open the PDF.
Permissions password. A permissions password also known as a master password requires a password to change permission settings. Using a permissions password, you can restrict printing, editing, and copying content in the PDF.
They do need a password to change the restrictions you've set. If the PDF is secured with both types of passwords, it can be opened with either password. However, only the permissions password allows the user to change the restricted features. Because of the added security, setting both types of passwords is often beneficial. Type and retype your password. Your password must be at least six characters long.
The password strength is displayed next to your password to indicate whether the chosen password is weak, medium, strong, or best. Click Apply. Acrobat displays a confirmation message that the file was successfully protected using password. If you receive a prompt, click Yes to change the security.
For each keystroke, the password strength meter evaluates your password and indicates the password strength. Select an Acrobat version from the Compatibility drop-down menu. The Compatibility option you choose determines the type of encryption used. It is important to choose a version compatible with the recipient's version of Acrobat or Reader.
Encrypt All Document Contents. Encrypts the document and the document metadata. If this option is selected, search engines cannot access the document metadata. Encrypts the contents of a document but still allows search engines access to the document metadata. You can use a search tool that takes advantage of XMP metadata. Encrypt Only File Attachments. Requires a password to open file attachments. Users can open the document without a password.
Use this option to create security envelopes. Click OK. At the prompt to confirm the password, retype the appropriate password in the box and click OK. You can prevent users from changing PDFs.
The restrict editing option prohibits users from editing text, moving objects, or adding form fields. Users can still fill in form fields, sign, or add comments. Choose Editing, and then type and retype your password. The password strength is displayed next to your password to indicate whether the chosen password is weak, medium, or strong. You can prevent users from printing, editing, or copying content in a PDF. You can set the restrictions you want to apply to the PDF.
Users cannot change these restrictions unless you give them password. To open a restricted PDF in these applications, the user must enter the permissions password. If you forget a password, you cannot recover it from the PDF.
All Adobe products enforce the restrictions set by the permissions password. However, if third-party products do not support these settings, document recipients are able to bypass some or all of the restrictions you set. Type the password in the corresponding field. Select what the user can print from the Printing Allowed menu:. Low Resolution dpi. Printing may be slower because each page is printed as a bitmap image. High Resolution. Lets users print at any resolution, directing high-quality vector output to PostScript and other printers that support advanced high-quality printing features.
Select what the user can change from the Changes Allowed menu:. Prevents users from making any changes to the document that are listed in the Changes Allowed menu, such as filling in form fields and adding comments.
Inserting, Deleting, And Rotating Pages. Lets users insert, delete, and rotate pages, and create bookmarks and thumbnails. Lets users fill in forms and add digital signatures.
Lets users add comments and digital signatures, and fill in forms. Any Except Extracting Pages. Lets users edit the document, create and fill in form fields, and add comments and digital signatures. Select an Acrobat version from the Compatibility menu. You can remove security from an open PDF if you have the permissions to do so. If the PDF is secured with a server-based security policy, only the policy author or a server administrator can change it. Legal Notices Online Privacy Policy.
Securing PDFs with passwords Search. Go to Adobe Acrobat User Guide. Password security basics. You cannot add passwords to a signed or certified document. Add a password to a PDF. Acrobat 6. Acrobat 7. Select an encryption option:. Restrict editing of a PDF. Restrict printing, editing, and copying. Prevents users from printing the document. Choose any of the following options:. Lets users select and copy the contents of a PDF.
Select what you want to encrypt:. Remove password security. Your options vary depending on the type of password security attached to the document: If the document had only a Document Open password, click OK to remove it from the document. If the document had a permissions password, type it in the Enter Password box, and then click OK.
Click OK again to confirm the action. Sign in to your account. Sign in. Quick Links View your apps Manage your plans.
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