如何限制 PDF 的文字選取拷貝?如何限制 PDF 的列印呢?坦白說徒法煉鋼的方式我還真的不知道,不過這次限時免費的 Batch PDF Encryp...
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Home - PDFEncrypt - Password protect PDF files for free ...
PDFEncrypt is a free, open-source native Windows app that allows you to password protect (encrypt) PDF files for free, without purchasing expensive software ... ...(以下省略)
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PDFEncrypt is a free, open-source native Windows app that allows you to password protect (encrypt) PDF files for free, w...
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No file size limits, no ad watermarks - A simple and secure web app to encrypt your PDF files with strong AES 128-bit en...
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Unlocking a PDF is easy with Smallpdf. You just need to upload your PDF, enter the password (for strongly encrypted file...
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Password protect PDFs online with trusted encryption. Try Adobe Acrobat online services to password protect and secure y...
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Upload PDF file to protect with a password using 256-bit AES encryption. Enter a strong password to lock your PDF docume...
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Unlock PDF. Remove PDF password security, giving you the freedom to use your PDFs as you want. Upload your file and tran...
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Encrypt and protect PDF with a password to safeguard sensitive information. Secure your PDF files online, with ease and ...
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2023年12月18日 — Another website that will password protect a PDF is CleverPDF, which offers a wide variety of tools. At ...
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Protect your PDF files online by adding a password that will prevent people from being able to copy or print your PDF do...
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Protect your PDF files by adding a password to those documents with our safe and easy-to-use online tool. Add permission...
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