Bootstrap / Flex / CSS

Are Bootstrap / Flex / CSS supported?


Yes, as of IronPdf release version 2021.9.3678, which features our brand new pixel perfect Chrome rendering engine.


Using the older WebKit engine - IronPDF supports HTML 5, Bootstrap 3 and CSS 3.

CSS columns and Flex are not fully supported in WebKit, so please consider alternative structures, including tables.

CSS classes that emulate Flexbox for simple use cases are [table, table-row, table-cell]