Thank you for using Syncfusion products.
We have checked the reported issues with HTML to PDF converter. Our HTML converter internally make use of Qt WebKit rendering engine for converting HTML to PDF. WebKit rendering engine preserves the output PDF document like how the input HTML file/URL is displayed on the WebKit based web browsers (safari). You can confirm these Bootstrap4 behaviors with Safari and our Qt WebKit browser (internal tool). We have attached a screenshot of the provided Bootstrap4 webpage (without print.min.css) view in safari browser and output PDF document for your reference. WebKit rendering engine itself, preserves the web page like below.
Steps to use the WebKit browser (internal tool):
1. Download and Extract the browser from above link.
2. Copy and Paste the fancybrowser.exe into QtBinaries folder.
3. Run the fancybrowser.exe.
4. Browser window will open with default URL (www.google.com
) and you can also modified the URL and check the web page behavior.
Bootstrap4 HTML view in Safari browser:
Qt WebKit Browser image :
WebKit Output Screenshot:
Kindly please provide us the complete input HTML file (with all resource style, script, etc.,), code snippet, product version to check the issue in our end. So, that it will be helpful for us to analyze and assist you further on this.