• 2026

    28.0
    Version 28.0 - November 26, 2025
  • 27.1
    Version 27.1 - March 24, 2025
  • 2025

    27.0
    Version 27.0 - November 27, 2024
  • 26.1
    Version 26.1 - March 25, 2024
  • 2024

    26.0
    Version 26.0 - October 11, 2023
  • 25.1
    Version 25.1 - March 16, 2023
  • 2023

    25.0
    Version 25.0 - October 13, 2022
  • 24.1
    Version 24.1 - March 7, 2022
  • 2022

    24.0
    Version 24.1 - March 7, 2022
    Version 24.0 - October 18, 2021
  • 23.1
    Version 23.1 - March 4, 2021
  • 2021

    23.0
    Version 23.1 - March 4, 2021
    Version 23.0 - November 19, 2020
  • 22.1
    Version 22.1 - May 19, 2020
  • 22.0
    Version 22.1 - May 19, 2020
    Version 22.0 - February 12, 2020
  • 2020

    21.1
    Version 21.1 - May 23, 2019
  • 21.0
    Version 21.1 - May 23, 2019
    Version 21.0 - February 22, 2019
  • 2019

    20.1
    Version 20.1 - June 15, 2018
  • 20.0
    Version 20.1 - June 15, 2018
    Version 20.0 - March 16, 2018

What's New in Oxygen PDF Chemistry 28.0

November 26, 2025

Oxygen PDF Chemistry 28 gives you more control over how PDFs are produced and delivered: you can compress output files for easier sharing, merge in additional PDFs before or after the generated content, and generate separate PDFs, for example for chapters or sections, directly from CSS.

There are changes in:

Core

Compress PDF Output

The new -compress-pdf parameter can be used to reduce the size of the PDF output file for easier storage and sharing.

Merge Multiple PDFs

It is now possible to merge multiple PDFs together. Depending on where you want the additional PDFs to be inserted, you can use the new -insert-after or -insert-before parameters to provide a semicolon-separated list of PDF files to be merged with the currently generated PDF.

Generate Separate Files from Fragments of a PDF

It is now possible to generate individual fragments of a PDF as separate files using the new -oxy-pdf-extract-file CSS property, with the file name specified by the property value. This is particularly useful if you want separate PDF files for each chapter of a publication, alongside the whole book.

Component Updates

Updated Apache FOP to Version 2.11

The Apache FOP library was updated to version 2.11.