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Flying Saucer would do

https://github.com/flyingsaucerproject/flyingsaucer

For more controlled results you could use Prince.

https://github.com/danielwestendorf/breezy-pdf-lite

to some extent - using com.lowagie.text.html.simpleparser.HTMLWorker (more like if you have really simple html and css, you can generate a PDF doc out of those - which works well for various reports).

Although if you are looking to convert real web pages to PDF, then this is not a good choice.

Prince (commercial) is outstanding, and supports a wide array of issues specific to printed media.

$495 for desktop license and $3800 for server. I would love to have something this for the times I could use it, but realistically that’s only once or twice per year.

I feel the same way about Adobe’s Creative suite subscription. I use it’s unique capabilities about once every 6 months. I wish there was a one week license.