PLOP / PLOP DS Download

Download PDFlib PLOP und PLOP DS 5.5

All PLOP packages contain combined binaries which cover two products:

  • PLOP is a versatile tool which can repair, linearize, optimize, encrypt, and decrypt PDF documents.
  • PLOP DS (Digital Signature) offers all features of PLOP, plus the ability to apply digital signatures to PDF documents. The digital signature feature is only available in PLOP DS, but not in the PLOP base product.

Download PDFlib PLOP & PLOP DS by clicking on the appropriate software package. Both products can be evaluated without a license, but some features are restricted (see documentation) unless a valid license key is applied. With the purchase of a PLOP or PLOP DS product license you will receive a license key.  The license key will activate PLOP or PLOP DS and will turn the software to an unrestricted version for commercial use.

English documentation for PLOP and PLOP DS is included in all packages.

PDFlib PLOP and PLOP DS packages contain:

  • PLOP/PLOP DS command-line tool
  • PLOP/PLOP DS library (including the pCOS interface) for the language bindings noted for the package
  • pCOS command-line tool
  • documentation
  • examples for all supported language bindings

Usability of Maintenance Updates

The latest PLOP 5 / PLOP DS 5 maintenance release is available to customers who purchase a new license and to customers with an active support agreement. Customers with a license for an older maintenance release can purchase a minor update to use the latest maintenance release.

PDFlib PLOP / PDFlib PLOP DS 5.5 (released 03/2023)

Platforms Package for use with
Windows - see system requirements
Windows Server x86 and Windows 8/10/11 x86 C, C++, Java, Perl, PHP1, Python, Ruby
Windows Server x64 and Windows 8/10/11 x64 C, C++, Java, Perl, PHP1, Python, Ruby
macOS - see system requirements
Universal binary (x64/ARM64) for macOS 10.9 and above C, C++, Java, Perl, PHP1, Python, Ruby
.NET Universal package - see system requirements
Windows x86, Windows x64, Linux x64, Alpine Linux x64, macOS x64 all languages supported in .NET
Linux- see system requirements
Linux x86 (32-bit) C, C++, Java, Perl, PHP1, Python, Ruby
Linux x64 (x86_64) C, C++, Java, Perl, PHP1, Python, Ruby
Alpine Linux x64 with musl C C, C++, Java, Perl, PHP1, Python, Ruby
Linux ARM64 (aarch64) C, C++, Java, Perl, PHP1, Python, Ruby

1) Please see the document PDFlib in PHP HowTo for details.

Supported versions of language bindings (not all versions are supported on all platforms):

  • PHP 7.4, 8.0, 8.1 and 8.2
  • Perl 5.26, 5.28, 5.30, 5.32, 5.34 and 5.36
  • Python 3.3 and newer
  • Ruby 2.7 and 3.0 and newer

If you want to check that your download was free of transmission errors, we provide MD5 checksums for all download packages.

PDFlib PLOP & PLOP DS Documentation

The PDFlib PLOP & PLOP DS Reference Manual provides a thorough introduction to using PDFlib PLOP and PLOP DS. It is a must-read for all developers.

PDFlib PLOP and PLOP DS
PDFlib PLOP & PLOP DS Reference Manual The English edition of the PDFlib PLOP and PLOP DS 5.5 Reference Manual is included in all PLOP 5.5 packages.
pCOS Path Reference English Path Reference for pCOS interface 13 in PDFlib PLOP and PLOP DS 5.5
PDFlib PLOP & PLOP DS Reference Manual Japanese PDFlib PLOP und PLOP DS 5.4 Reference Manual
pCOS Path Reference Japanese Path Reference for pCOS interface 12