Timeline to support brotli compression?

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guust ysebie

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Jan 14, 2026, 12:29:27 PM (3 days ago) Jan 14
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A major open source library iText  just added experimental support for PDF documents that use  the `BrotliDecode` filter see:
https://github.com/itext/itext-java/commit/f347b188727207b8a30c64e35f91f8f1b140592b

What is the timeline to support it? Currently it's still a technical draft but it would greatly help out adoption within the ecosystem even if it's still behind an experimental flag/build.

More info can be found here: 
https://pdfa.org/brotli-compression-coming-to-pdf/
I can also provide Pdf files already using the encoding for testing.


Lei Zhang

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Jan 14, 2026, 12:44:52 PM (3 days ago) Jan 14
to guust ysebie, pdfium
Thanks for bringing this up. Has the technical spec for BrotliDecode
been finalized?

It'll be good to start by filing a feature request on
https://crbug.com/pdfium/new, and we can go from there. As always,
PDFium is open source, so anyone who is interested can contribute to
the implementation.
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guust ysebie

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Jan 14, 2026, 2:04:41 PM (3 days ago) Jan 14
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