This is what the printed page says
<button type="submit" class="btn btn-default navbar-btn " onclick="window.print();">打印</button>
When you print it out, you also need to select the target as Save as PDF to save it as a PDF.
Can I just click the button to download the pdf?
The project is for ASP.NET webform. Can it be implemented using js or C#?
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
To provide an idea, if you want to download PDF files directly, you may need to change the JS method to directly download the URL request, and return the Response in the background to directly return to the PDF file stream.
The back-end uses phatomjs for rendering. After rendering the web page, a pdf file is generated, and then the front-end downloads the file directly.