Converting HTML to PDF is a common task for many web developers. It allows them to create dynamic and interactive documents that can be easily shared and printed. One of the most popular libraries for this task is jsPDF. In this guide, we will show you how to convert HTML to PDF using jsPDF and how to make it covert by using some of the advanced features of the library.
What is jsPDF?
jsPDF is a JavaScript library that allows you to generate PDF documents on the client-side. It is easy to use and can be integrated into any web application. The library provides a variety of methods for adding text, images, and other elements to a PDF document. It can also be used to generate PDFs from HTML content.
Converting HTML to PDF with jsPDF
To convert HTML to PDF using jsPDF, you will need to first include the library in your web page. You can do this by adding the following line of code to the head of your HTML document:
<script src="https://cdnjs.cloudflare.com/ajax/libs/jspdf/1.5.3/jspdf.debug.js"></script>
Once you have included the library, you can use the following code to convert a div with the id "content" to a PDF:
var doc = new jsPDF();
var specialElementHandlers = {
'#editor': function (element, renderer) {
return true;
}
};
$('#cmd').click(function () {
doc.fromHTML($('#content').html(), 15, 15, {
'width': 170,
'elementHandlers': specialElementHandlers
});
doc.save('sample-file.pdf');
});
In this example, we first create a new jsPDF document and define a specialElementHandlers object. This object allows us to specify how certain elements should be handled when they are encountered during the conversion process. In this case, we are telling the library to ignore the element with the id "editor".
Next, we attach a click event to the button with the id "cmd". When the button is clicked, the library will convert the HTML content of the div with the id "content" to a PDF. The content will be added to the document starting at the coordinates (15,15) and will have a width of 170 pixels. The resulting PDF will be saved to the user's device with the name "sample-file.pdf"
Making the conversion covert
The basic conversion process is quite simple, but there are a few things you can do to make it more covert. Here are a few tips:
- Use a higher resolution: By default, jsPDF uses a resolution of 150 dpi. This is fine for most use cases, but if you want to create high-quality PDFs, you may want to increase the resolution to 300 dpi or higher.
- Add a progress bar: Converting large amounts of HTML to PDF can take some time, so it is a good idea to add a progress bar to let the user know that the conversion is in progress. You can use the
doc.updateProgress()method to update the progress of the conversion. - Add a loading screen: If the HTML content is large, it may take some time to load. To improve the user experience, you can add a loading screen that is displayed while the content is being loaded. Once the content is loaded, you can remove the loading screen and start the conversion process.
- Add a table of contents: If the PDF contains a lot of content, it can be helpful to add a table of contents. This will allow the user to quickly navigate to the section they are interested in.
In this article, we have shown you how to convert HTML to PDF using jsPDF and how to make the conversion process more covert. With this knowledge, you will be able to create dynamic and interactive documents that can be easily shared and printed. So, give it a try and let us know what you think.
References
| Reference | Description |
|---|---|
| jsPDF | JavaScript library for generating PDF documents on the client-side. |