How make zip of images and download it using React JS in 3 Easy steps

#webdev #javascript #programming #react

To make zip file of images and download it, which is stored in state variable first we need to install one dependencies,

Step 1 -- Install JSZIP using npm :

npm i jszip

Step 2 -- then import it inside our JSX file and make instance of it :

import { useState, useCallback } from "react";
import JSZip from "jszip";


export default Download(){

    const [images,setImages]=useState([ // Array of images
      "image1.jpg",
      "image2.jpg",
      "image3.jpg",
      "image4.jpg",
      "image5.jpg",
    ])

    const zip = new JSZip(); // instance of JSZip

return (
        <div>
             <button onClick={handleDownload}>Download</button>
        </div>
      )
}

in above code we make one array state variable for store the images if you get this images from server then you use setImages to store images inside state.

Step 3(Final step) -- Write function to make zip of images and download it.

import { useState, useCallback } from "react";
import JSZip from "jszip";


export default Download(){

    const [images,setImages]=useState([ // Array of images
      "image1.jpg",
      "image2.jpg",
      "image3.jpg",
      "image4.jpg",
      "image5.jpg",
    ])

    const zip = new JSZip(); // instance of JSZip

    // Function for make zip file and download it

    async function handleZip(){
         // Add Images to the zip file
          for (var i = 0; i < images.length; i++) {
          const response = await fetch(images[i]);
          const blob = await response.blob();
          console.log(blob);
          zip.file(images[i].split("/").pop(), blob);



             if (i == selectedImages.length - 1) {
            // Generate the zip file
            const zipData = await zip.generateAsync({
              type: "blob",
              streamFiles: true,
            });
            console.log(zipData);
            // Create a download link for the zip file
            const link = document.createElement("a");
            link.href = window.URL.createObjectURL(zipData);
            link.download = "snapcial-ai.zip";
            link.click();
          }

    }

      return (
        <div>
             <button onClick={handleDownload}>Download</button>
        </div>
      )
}

Tadaaaa if it is helpful for you then follow me on linkedin :
Jaydeep Khachariya

if you face any errors then contact me on : khachariyajaydeep@gmail.com this email id.

Top comments (5)

topovik • Nov 29 '23

Let me put it in a more understandable form

useDownload.js

import JSZip from "jszip";

const useDownload = () => {
  async function handleZip(images) {
    const zip = new JSZip();

    // Add Images to the zip file
    for (let i = 0; i < images.length; i++) {
      const response = await fetch(images[i]);
      const blob = await response.blob();
      zip.file(images[i].split("/").pop(), blob);
    }

    // Generate the zip file
    const zipData = await zip.generateAsync({
      type: "blob",
      streamFiles: true,
    });

    // Create a download link for the zip file
    const link = document.createElement("a");
    link.href = window.URL.createObjectURL(zipData);
    link.download = "name-zip-folder.zip";
    link.click();
  }

  return { handleZip };
};

export { useDownload };

component.js

import { useDownload } from "./useDownload";

const Component = () => {
   const { handleZip } = useDownload();
   const images = [
      "image1.jpg",
      "image2.jpg",
      "image3.jpg",
      "image4.jpg",
      "image5.jpg",
   ]

   return (
     <div>
       <button onClick={() => handleZip(images)}>Download</button>
     </div>
   )
}