Hacker News: whizzx

EU LOTL trust anchors are rotating on April 28: what breaks and how to patch

whizzx — Sun, 19 Apr 2026 16:15:09 +0000

Article URL: https://guust.ysebie.be/blog/new-eu-trusted-certificates-updated

Comments URL: https://news.ycombinator.com/item?id=47825372

Points: 4

# Comments: 0

New comment by whizzx in "ISO PDF spec is getting Brotli – ~20 % smaller documents with no quality loss"

whizzx — Thu, 22 Jan 2026 14:48:37 +0000

The pdf association is still running experiments on whether or not to support custom dictionaries based on real life workloads gains.

So it might land in the spec once it has proven if offers enough value

New comment by whizzx in "ISO PDF spec is getting Brotli – ~20 % smaller documents with no quality loss"

whizzx — Thu, 22 Jan 2026 14:46:48 +0000

You can read about it here https://pdfa.org/brotli-compression-coming-to-pdf/

New comment by whizzx in "ISO PDF spec is getting Brotli – ~20 % smaller documents with no quality loss"

whizzx — Thu, 22 Jan 2026 14:42:12 +0000

No this feature is coming straight from the PDF association itself and we just added experimental support before it's officially in the spec to help testing between different sdk processors.

So your comment is a falsehood

New comment by whizzx in "ISO PDF spec is getting Brotli – ~20 % smaller documents with no quality loss"

whizzx — Thu, 22 Jan 2026 14:38:24 +0000

It's prototypish work to support it before it land's in the official specification. But it will indeed take some adoption time.

Because I'm doing the work to patch in support across different viewers to help adoption grow. And once the big opensource ones ship it pdfjs, poppler, pdfium, adoption can quickly rise.

ISO PDF spec is getting Brotli – ~20 % smaller documents with no quality loss

whizzx — Thu, 22 Jan 2026 10:41:23 +0000

Article URL: https://pdfa.org/want-to-make-your-pdfs-20-smaller-for-free/

Comments URL: https://news.ycombinator.com/item?id=46717507

Points: 169

# Comments: 111

Adding Dependency Injection to PdfDocument in iText

whizzx — Thu, 15 Jan 2026 11:48:07 +0000

Article URL: https://kb.itextpdf.com/itext/adding-dependency-injection-to-the-pdfdocument-cla

Comments URL: https://news.ycombinator.com/item?id=46631168

Points: 3

# Comments: 0

Free PDF "Cheat Sheets" Released to Help Developers Navigate the PDF Spec

whizzx — Tue, 18 Nov 2025 17:52:49 +0000

Article URL: https://pdfa.org/new-and-updated-pdf-cheat-sheets/

Comments URL: https://news.ycombinator.com/item?id=45969667

Points: 3

# Comments: 0

New comment by whizzx in "iText 9.4.0 Brings LOTL Functionality for Seamless EU PDF Signature Validation"

whizzx — Thu, 04 Sep 2025 13:00:07 +0000

Part of this feature is the release of the repo https://github.com/itext/itext-eu-trusted-lists-resources which contains the trusted European certificates and is maintained and kept up to date by the iText development team. It's free and MIT licensed so go use it if you need it!

iText 9.4.0 Brings LOTL Functionality for Seamless EU PDF Signature Validation

whizzx — Thu, 04 Sep 2025 13:00:07 +0000

Article URL: https://kb.itextpdf.com/itext/pdf-signature-validation-lotl-cache-initialization

Comments URL: https://news.ycombinator.com/item?id=45126766

Points: 3

# Comments: 1

New comment by whizzx in "Supporting org.apache.xml.security in graalVM"

whizzx — Thu, 14 Aug 2025 06:32:33 +0000

Yes, I was planning to do that in the coming weeks when I find a few hours of time. And didn't know about the second part quite interesting, I'll look into it thank you

Supporting org.apache.xml.security in graalVM

whizzx — Wed, 13 Aug 2025 13:03:04 +0000

Article URL: https://guust.ysebie.be/blog/supporting-apache-xml-security-algorithms.html

Comments URL: https://news.ycombinator.com/item?id=44887930

Points: 30

# Comments: 4

Making iText's table rendering faster

whizzx — Mon, 19 May 2025 10:33:02 +0000

Article URL: https://kb.itextpdf.com/itext/how-i-made-pdf-table-rendering-faster

Comments URL: https://news.ycombinator.com/item?id=44028286

Points: 33

# Comments: 6

New comment by whizzx in "iText PDF Library turns 25"

whizzx — Thu, 20 Feb 2025 16:52:20 +0000

Does it support tagged documents and PDF2.0 as well?

New comment by whizzx in "Show HN: IPA, a GUI for exploring inner details of PDFs"

whizzx — Thu, 29 Aug 2024 12:52:26 +0000

I use it literally everyday, not only to see the structure but also modify pdf's on the fly when I need to tests edge cases.

Stuff I do with it: Modify content streams, extract images/content, just investigate general structure of the pdf documents, remove pages, repair documents,... it's literally a swiss army knife when working with pdf's

HTML to PDF/A conversion made easy

whizzx — Mon, 08 Jul 2024 13:12:10 +0000

Article URL: https://itextpdf.com/blog/technical-notes/easier-pdfa-pdfhtml

Comments URL: https://news.ycombinator.com/item?id=40905116

Points: 7

# Comments: 0