Build File Downloader From URL Using JavaScript HTML5 CSS3

Free JavaScript file download from URL script.


<!DOCTYPE html>
<html lang="en" dir="ltr">
    <meta charset="utf-8">
    <title>File Downloader in JavaScript |</title>
        /* Import Google Font - Poppins */
@import url(';500;600;700&display=swap');
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Poppins', sans-serif;
  display: flex;
  padding: 0 10px;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: #4285F4;
  max-width: 500px;
  background: #fff;
  border-radius: 7px;
  padding: 20px 25px 15px;
  box-shadow: 0 15px 40px rgba(0,0,0,0.12);
header h1{
  font-size: 27px;
  font-weight: 500;
header p{
  margin-top: 5px;
  font-size: 18px;
  color: #474747;
  margin: 20px 0 27px;
form input{
  width: 100%;
  height: 60px;
  outline: none;
  padding: 0 17px;
  font-size: 19px;
  border-radius: 5px;
  border: 1px solid #b3b2b2;
  transition: 0.1s ease;
form input::placeholder{
  color: #b3b2b2;
form input:focus{
  box-shadow: 0 3px 6px rgba(0,0,0,0.13);
form button{
  width: 100%;
  border: none;
  opacity: 0.7;
  outline: none;
  color: #fff;
  cursor: pointer;
  font-size: 17px;
  margin-top: 20px;
  padding: 15px 0;
  border-radius: 5px;
  pointer-events: none;
  background: #4285F4;
  transition: opacity 0.15s ease;
form input:valid ~ button{
  opacity: 1;
  pointer-events: auto;
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <div class="wrapper">
        <h1>File Downloader</h1>
        <p>Paste url of image, video, or pdf to download. This tool is made with vanilla javascript.</p>
      <form action="#">
        <input type="url" placeholder="Paste file url" required>
        <button>Download File</button>
        const fileInput = document.querySelector("input"),
downloadBtn = document.querySelector("button");
downloadBtn.addEventListener("click", e => {
    downloadBtn.innerText = "Downloading file...";
function fetchFile(url) {
    fetch(url).then(res => res.blob()).then(file => {
        let tempUrl = URL.createObjectURL(file);
        const aTag = document.createElement("a");
        aTag.href = tempUrl; = url.replace(/^.*[\\\/]/, '');
        downloadBtn.innerText = "Download File";
    }).catch(() => {
        alert("Failed to download file!");
        downloadBtn.innerText = "Download File";

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