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News We Recently Launched SysTools Email Decryptor , SysTools Data Recovery Toolkit , SysTools Video Converter , SysTools Email Address Checker , SysTools MBOX Splitter , SysTools MBOX Merge , SysTools CSV Split & Merge , SysTools Excel Split & Merge | News SysTools Commitment to Child Safety: Upholding the Fight Against CSAM |

SysTools Launches Mac PDF Lock 4.0 – Introducing Powerful PDF Security for macOS Users

August 26, 2025 | Press Releae

New Delhi, India – August 26, 2025 — SysTools, a highly distinguished leader in data management and security technologies or solutions, is excited to announce the new release of SysTools Mac PDF Lock 4.0. In this new version, we provide enhanced tools to allow Mac users more flexibility and precision when locking and protecting sensitive PDF files in batch mode.

With Mac PDF Locker, Mac users can safeguard confidential PDF documents in just a few clicks. Since exchanging and collaborating on digital documents is rapidly becoming part of business and personal systems, there is significant pressure for verifiable safety.

PDF files need to be locked and protected in many instances, such as intellectual property, legal contracts, corporate data, and academic research papers. SysTools Mac PDF Lock 4.0 allows users to secure PDF files with industry-standard encryption, customizable permission controls, and a convenient user interface especially designed for the Mac user.

What’s New in SysTools Mac PDF Lock 4.0 Version

  • Lock PDF Instantly in Batch Mode: With the SysTools Mac PDF Locker tool, users can effortlessly manage multiple files at once. This new software allows users to add entire folders of PDF files in one go, streamlining bulk operations and saving valuable time for professionals handling large document sets.
  • Simple and Interactive Dashboard: The new 4.0 version of Mac PDF Password Protector offers a sleek and simple interface for all. Unlike the complex Adobe Acrobat tool, this software is handy and provides full control without technical support. So both novice and professional users can protect their PDF files instantly.
  • Apply Owner Document Permissions Password: Using the SysTools Mac PDF Lock Software 4.0 version, you can apply different modes of permissions like editing, content copying, printing, and more. This way, users can safeguard PDF documents beyond password security. Plus, it helps to make PDFs secure to share in the digital or online sphere.
  • Advanced PDF Printing Restrictions: The Mac PDF Lock tool allows users to have standalone control over how their PDF files can be printed:
    • Not Allowed: Completely disables printing.
    • Low Resolution (150 dpi): Authorizes limited & low-grade printing for basic needs.
    • High Resolution: Permits maximum quality printing.
  • PDF Copy Restrictions for Enhanced Security & Accessibility: The new release of 4.0 introduces flexible options for managing content copying:
    • Enable Text Access from Screen Readers: Ensures accessibility without enabling unrestricted copying.
    • Enable Copying of Text, Images, and Other Content: Grants permission for full content copying as required.
  • Comprehensive Changes and Editing Permissions: Mac PDF Lock 4.0 provides unmatched control over document modifications:
    • Not Allowed: Restricts all edits.
    • Document Assembly (Insert, Delete, Rotate Pages): Allows basic structural changes while restricting content edits.
    • Fill in Form Fields & Sign: Permits form completion and signing of existing signature fields.
    • Commenting and Sign: Enables commenting along with filling out and signing forms.
    • Except Extracting Pages: Allows all edits except page extraction, preserving document integrity.
  • PDF Open Password Protection: The SysTools Mac PDF Lock 4.0 version lets users set a password to open PDF files, ensuring only authorized individuals can access sensitive content. This way, users can password-protect the PDF document without hurting the file integrity or originality.
  • Strong Encryption Standards: SysTools Mac PDF Lock v4.0 supports multiple encryption algorithms, giving users flexibility in selecting their preferred security level:
    • RC4-40
    • RC4-128
    • AES-128
    • AES-256 (the strongest standard available)
  • Full macOS Compatibility: The tool is fully optimized for the latest macOS versions, ensuring seamless performance across platforms:
    • macOS Sequoia
    • macOS Sonoma
    • macOS Ventura
    • macOS Monterey

      • "The latest version of SysTools Mac PDF Lock 4.0 is not just a new product launch, it is a full suite for the Mac user to secure PDF documents with high-security protection," Anuraag Singh, CEO of SysTools. "We have developed this version of Mac PDF Locker with a focus on robust levels of encryption and permission settings so that users can feel confident that their PDF documents are secure."

      Availability: SysTools Mac PDF Lock 4.0 is now available for download, try the free edition.

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      About SysTools

      SysTools is a global leader in data management, recovery, digital forensics, and document security solutions. For over a decade, we have been developing reliable tools that are easy to use to solve complex IT problems. Wth a customer-first philosophy and an innovative approach, SysTools is proud to have served millions of users worldwide with solutions that provide more secure and effective data management.