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Release pdfOptimizer 4.1.0

Release date: Sep 2nd, 2025

pdfOptimizer is our iText Core add-on to reduce the file size of PDFs.

Adding to the improved XObject optimizations from the previous release, this update brings a significant improvement to font subsetting, which can hugely decrease the time taken to process complex documents. In our testing, we have observed cases where the resulting PDF would be up to a third of the size compared to previous releases.

Downloads

Changelog

Improvements

  • DEVSIX-5179 – Font Subset Consolidation
    Adds support for merging duplicate font subsets. Reduces file size without affecting visual fidelity.

Installation Instructions

Examples (latest ones)

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