To unlock and save a locked PDF, you can use various tools or methods. Here's a step-by-step guide using Adobe Acrobat Reader DC:
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Download and install Adobe Acrobat Reader DC from the official website: https://get.adobe.com/reader/
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Open the locked PDF using Adobe Acrobat Reader DC.
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Click on the "Fill & Sign" tab in the right-hand panel.
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Click on the "Unlock" button in the same panel.
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Enter the password provided by the document owner and click "Unlock."
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If the password is correct, the PDF will be unlocked, and you can save it by clicking on the "File" menu, then "Save As."
If you don't have Adobe Acrobat Reader DC, you can try online tools like SmallPDF (https://www.smallpdf.com/unlock-pdf) or PDF-XChange Editor (https://www.pdf-xchange.com/).
For more information, refer to:
- Adobe Acrobat Reader DC: https://helpx.adobe.com/acrobat/using/unlock-protect-pdf-files.html
- SmallPDF: https://www.smallpdf.com/unlock-pdf
- PDF-XChange Editor: https://www.pdf-xchange.com/
This guide assumes that the password for the locked PDF is known. If you don't have the password, it might not be possible to unlock the PDF without contacting the document owner.