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Welcome!
You have come across the ZephyrSoft home page. Here you can download some tools I developed over the years and also actively take part in further development. I wrote these programs because there was no free solution, at least no satisfactory one. Some were created especially for Koinonia Fellowship in Hannover, Germany.
Mathis Dirksen-Thedens
And just in case you wondered what "Zephyr" stands for: it's Latin and means "westerly winds". I chose it as my code name (or brand name) long ago.
Use Canon CanoScan 9000F Mark II to digitize slides and prints on Linux
Some time ago I collected some boxes of slides from my parents and parents-in-law. The pictures were taken in the 70s and 80s and it would be a shame to disregard them, so I set out to create a workflow to digitize them. I bought a CanoScan 9000F Mark II because the Linux support is good - this piece of technology can scan with 4800 dpi which should be sufficient even for advanced use. I confined myself to 1200 dpi which gave me pictures of 1650 x 1080 pixels. The process took 35 seconds for 4 pictures (scanned in one go).
Read more: Use Canon CanoScan 9000F Mark II to digitize slides and prints on Linux
Certificates and the JVM
The recent events revealed that the internet is not a very safe place. If you don't encrypt your data, it is likely to be analyzed by third parties like intelligence services. So you start to encrypt everything because you care for the safety your customers data. You managed to get it done without extra budget because you use a self-signed certificate - but oh, what is this? A nasty ValidatorException saying "PKIX path building failed". What now?