PLOP / PLOP DS Download

Download PDFlib PLOP und PLOP DS 5.4

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 5.4 (released 05/2020)

PlatformsPackage for use with
Windows - see system requirements
Windows Server x86 and Windows 7/8/10 x86.NET2, C, C++, Java, Perl, PHP1, Python, Ruby
Windows Server x64 and Windows 7/8/10 x64.NET2, C, C++, Java, Perl, PHP1, Python, Ruby
macOS - see system requirements
macOS 10.9 and above x86/x64C, C++, Java, Perl, PHP1, Python, Ruby
.NET Core Universal package - see system requirements
Windows x64, Linux Intel 64, Alpine Linux Intel 64, macOS x64all languages supported in .NET Core
Linux/FreeBSD - see system requirements
Linux x86 (32-bit)C, C++, Java, Perl, PHP1, Python, Ruby
Linux Intel 64 (x86_64)C, C++, Java, Perl, PHP1, Python, Ruby
Alpine Linux Intel 64 (x86_64)C, C++, Java, Perl, PHP1, Python, Ruby
FreeBSD 10/11 x86C, C++, Java, Perl, PHP1, Python, Ruby
FreeBSD 10/11 Intel 64C, C++, Java, Perl, PHP1, Python, Ruby
FreeBSD 12 Intel 64C, C++, Java, Perl, PHP1, Python, Ruby
Mobile Systems - system requirements
iOS 32- and 64-bit (universal)Objective-C, C, C++
Android (32-bit)C, C++Java
IBM - see system requirements
IBM AIX 5/6/7 (32-bit)

C, C++, Java, Perl, PHP1, Python

IBM AIX 5/6/7 (64-bit)C, C++, Java
IBM i5/iSeries and zSeries - see system requirements
IBM i5/iSeries3Java, PHP3
IBM zSeries (USS)C, C++
Linux-S390x (64-bit)C, C++

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

2) Please see the document PDFlib in .NET HowTo for details.

3) See here regarding the use of AIX binaries for Java or PHP for deployment on IBM i5/iSeries.

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

  • PHP 7.2, 7.3 and 7.4 are supported. See our PDFlib in PHP HowTo document for more info about PHP and PDFlib products.
  • The .NET Classic package for Windows supports .NET Framework 4.0 and above.
  • The .NET Core package supports .NET Standard 2.0 and .NET Framework 4.6.1 and above.
  • Perl 5.26, 5.28 and 5.30 are supported.
  • Python 3.3 and newer 
  • Ruby 2.5, 2.6 and 2.7 are supported.

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 ManualThe English edition of the PDFlib PLOP and PLOP DS 5.4 Reference Manual is included in all PLOP 5.4 packages.
pCOS Path ReferenceEnglish Path Reference for pCOS interface 12 in PDFlib PLOP and PLOP DS 5.4
Thales e-Security PDFlib PLOP DS Integration GuideThis document describes the integration of PDFlib PLOP DS with Thales e-Security HSM (Hardware Security Module) products
PDFlib PLOP & PLOP DS ReferenzmanualGerman PDFlib PLOP and PLOP DS 5.2 Reference Manual
pCOS PfadreferenzGerman Path Reference for pCOS interface 11
PDFlib PLOP & PLOP DS Reference ManualJapanese PDFlib PLOP und PLOP DS 5.4 Reference Manual
pCOS Path ReferenceJapanese Path Reference for pCOS interface 12