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Try our PDF Tools app for Android to remove PDF passwords offline.
You need to enter either PDF user password or owner password to unlock PDF files. You can leave password blank if the PDF file is encrypted without a user password. Some secured PDF files have owner password only. These PDF files can be opened by anyone, but encryption is added to enforce certain restrictions (e.g. you can view the document, but you can not edit or print it).
Drag multiple PDF files to the "Add Files" section. Each PDF file size can be up to 40m.
The processing automatically starts when files are uploaded. Please be patient while files are uploading or processing.
The output files will be listed in the "Conversion Results" section. To compress all output files in a ZIP file, click "" icon on the right, then click "Add to ZIP". You can right-click on file name and click "Save link as..." to save the file. The output files will be automatically deleted on our server in two hours, so please download it to your computer or save it to online storage services such as Google Drive or Dropbox as soon as possible.
The standard security provided by Acrobat PDF consists of two different methods and two different passwords: a user password, which encrypts the file and prevents opening, and an owner password, which specifies operations that should be restricted even when the document is decrypted, which can include modifying, printing, or copying text and graphics out of the document, or adding or modifying text notes and AcroForm fields. The user password encrypts the file, while the owner password does not, instead relying on client software to respect these restrictions. An owner password can easily be removed by software, including some free online services. Thus, the use restrictions that a document author places on a PDF document are not secure, and cannot be assured once the file is distributed; this warning is displayed when applying such restrictions using Adobe Acrobat software to create or edit PDF files.