Examples of components and methods for exporting PDFs at the front end

Preface

Exporting PDF files is a common requirement in web applications. Whether it is for printing, sharing, or archiving, it is very useful to be able to convert web page content to PDF format. Fortunately, front-end developers have multiple methods and components to implement this functionality. In this article, we will detail several popular front-end exporting PDF components and methods, and provide practical examples to help you understand them better.

1. jsPDF

jsPDF is a lightweight JavaScript library designed for generating PDF files. It supports the addition of multiple page layouts, fonts, images and other elements. Here is a basic example of usage:

// Introduce jsPDF libraryimport jsPDF from 'jspdf';

// Create a new PDF documentconst doc = new jsPDF();

// Add text to PDF document('Hello, World!', 10, 10);

// Save PDF document('');

In this example, we first introduced the jsPDF library. We then created a new PDF document and usedtext()The method adds a simple text. Finally, we usesave()Method to save PDF document locally.

If you want to export the content of the web page as PDF, you can usehtml2canvasThe library converts HTML elements into images and then adds the images to PDF documents. Here is an example:

import jsPDF from 'jspdf';
import html2canvas from 'html2canvas';

// Get the HTML element to be exportedconst element = ('my-element');

// Convert HTML elements to images using html2canvashtml2canvas(element).then((canvas) => {
  // Create a new PDF document  const doc = new jsPDF();

  // Add images to PDF documents  const imgData = ('image/jpeg');
  (imgData, 'JPEG', 10, 10);

  // Save PDF document  ('');
});

In this example, we first get the HTML element to be exported. Then, we usehtml2canvasThe library converts it to an image. Next, we create a new PDF document and useaddImage()Method to add images to the document. Finally, we usesave()Method to save PDF document locally.

2. pdfMake

pdfMake is a powerful JavaScript library for generating complex PDF documents. It supports the addition of multiple page layouts, tables, images and other elements. Here is a basic example of usage:

//Introduce the pdfMake libraryimport pdfMake from 'pdfmake';

// Define the content and style of PDF documentsconst docDefinition = {
  content: [
    'Hello, World!'
  ]
};

// Generate PDF documents(docDefinition).download('');

In this example, we first introduced the pdfMake library. Then, we define the content and style of the PDF document. Finally, we usecreatePdf()Methods to generate PDF documents and usedownload()Method saves it locally.

If you want to export the content of the web page as PDF, you can usehtml2pdfLibrary converts HTML elements into PDF documents. Here is an example:

import pdfMake from 'pdfmake';
import html2pdf from 'html2pdf';

// Get the HTML element to be exportedconst element = ('my-element');

// Convert HTML elements to PDF documents using html2pdfhtml2pdf(element).then((pdf) => {
  // Save PDF document  ('');
});

In this example, we first get the HTML element to be exported. Then, we usehtml2pdfThe library converts it to a PDF document. Finally, we usesave()Method to save PDF document locally.

3.

is a JavaScript library dedicated to printing and exporting PDFs. It supports the addition of multiple page layouts, fonts, images and other elements. Here is a basic example of usage:

// Introduce the libraryimport Print from 'print-js';

// Define what to print or exportconst content = 'Hello, World!';

// Print or export PDF documentsPrint({
  printable: content,
  type: 'pdf',
  documentTitle: 'Example PDF',
  documentStyle: 'margin: 10px;',
}).print();

In this example, we first introduced the library. Then we define what to print or export. Finally, we usePrint()Methods to generate PDF documents and useprint()Method to print or save it locally.

If you want to export the content of the web page as PDF, you can usehtml2pdfLibrary converts HTML elements into PDF documents. Here is an example:

import Print from 'print-js';
import html2pdf from 'html2pdf';

// Get the HTML element to be exportedconst element = ('my-element');

// Convert HTML elements to PDF documents using html2pdfhtml2pdf(element).then((pdf) => {
  // Print or export PDF documents  Print({
    printable: pdf,
    type: 'pdf',
    documentTitle: 'Example PDF',
    documentStyle: 'margin: 10px;',
  }).print();
});

In this example, we first get the HTML element to be exported. Then, we usehtml2pdfThe library converts it to a PDF document. Finally, we usePrint()Methods to generate PDF documents and useprint()Method to print or save it locally.

in conclusion

There are many options for the components and methods for exporting PDFs in front-end. jsPDF, pdfMake and are all popular libraries, each with its advantages and disadvantages. Which one to choose depends on your specific needs and the complexity of the project. Whichever you choose, you can easily convert web content to PDF format, providing better user experience and functionality.

This is the end of this article about the components and methods of front-end exporting PDF. For more related front-end exporting PDF components, please search for my previous articles or continue browsing the related articles below. I hope everyone will support me in the future!