itext7：

https://github.com/itext/itext7

i7j-pdfhtml：

https://github.com/itext/i7j-pdfhtml

ebooks地址：

https://kb.itextpdf.com/home/it7kb/ebooks

01-iText 7-Jump-Start Tutorial for Java

https://kb.itextpdf.com/home/it7kb/ebooks/itext-7-jump-start-tutorial-for-java

02-iText 7-Building Blocks

https://kb.itextpdf.com/home/it7kb/ebooks/itext-7-building-blocks

03-pdfHTML

https://kb.itextpdf.com/home/it7kb/ebooks/itext-7-converting-html-to-pdf-with-pdfhtml

入门demo：

https://blog.csdn.net/WayneLee0809/article/details/112788783

itext7学习笔记：

https://blog.csdn.net/u012397189/category_9270695.html

itext7高级教程之构建基础块：

https://blog.csdn.net/u012397189/category_9273654.html