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    • NCH Software
      https://www.nchsoftware.com › picopdf › encrypt
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      Pdf File Encryption | See How To Encrypt PDF Files

      SponsoredEasily add encryption to a pdf, encrypt pdf files for email and share. Download Free. Protect your PDF files with encryption. Encrypt pdf files easily on Windows PC and Mac

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    • LegalTemplates
      https://legaltemplates.net › lock-pdf
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      Password Protect Pdf Document | 100% Safe and Confidential

      SponsoredLock/Protect PDF Documents Online From Any Devices. Simply Upload, Save, Download & Print. Upload & Protect Your PDF Documents Online. 100% Safe and Secure. No Installation Needed.
    • Adobe Acrobat
      https://www.adobe.com › online-tools › free
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      Encrypt your PDF for free | Secure PDF files at no cost

      SponsoredEncrypt your PDFs for free with Acrobat. Add a password and ensure only authorized access. Secure your PDFs for free with Adobe Acrobat. Add a password and keep your content private