Find and add a download button for PDFs on webpages, including embedded PDFs in iframes.
// ==UserScript==
// @name PDF Finder and Downloader
// @version 1.3
// @description Find and add a download button for PDFs on webpages, including embedded PDFs in iframes.
// @author iamnobody
// @license MIT
// @match *://*/*
// @grant none
// @icon https://upload.wikimedia.org/wikipedia/commons/thumb/8/87/PDF_file_icon.svg/400px-PDF_file_icon.svg.png
// @namespace pdf downloader
// ==/UserScript==
(function() {
'use strict';
// Function to check if a link ends with .pdf
function isPDFLink(link) {
return link.toLowerCase().endsWith('.pdf');
}
// Function to add a download button next to a PDF link
function addDownloadButton(element, pdfLink) {
const downloadButton = document.createElement('button');
downloadButton.innerText = '⬇️';
downloadButton.style.backgroundColor = 'violet'; // Change color to violet
downloadButton.style.color = 'white';
downloadButton.style.border = 'none';
downloadButton.style.padding = '5px 10px';
downloadButton.style.marginLeft = '5px';
downloadButton.style.cursor = 'pointer';
downloadButton.addEventListener('click', function(event) {
event.preventDefault();
window.open(pdfLink, '_blank');
});
// Insert the download button next to the PDF link or iframe
element.parentNode.insertBefore(downloadButton, element.nextSibling);
// Add circular button beside the PDF ⬇️ button
addCircularButton(downloadButton);
}
// Function to add a circular button beside the PDF ⬇️ button
function addCircularButton(downloadButton) {
const circularButton = document.createElement('button');
circularButton.innerText = '-';
circularButton.style.backgroundColor = 'green'; // Set color to green
circularButton.style.color = 'white';
circularButton.style.border = 'none';
circularButton.style.borderRadius = '50%'; // Make it circular
circularButton.style.width = '20px';
circularButton.style.height = '20px';
circularButton.style.marginLeft = '5px';
circularButton.style.cursor = 'pointer';
// Add click event listener to exclude the website
circularButton.addEventListener('click', function(event) {
event.preventDefault();
excludeWebsiteFromScript();
});
// Insert the circular button next to the PDF ⬇️ button
downloadButton.parentNode.insertBefore(circularButton, downloadButton.nextSibling);
}
// Function to exclude the current website's domain from running the script
function excludeWebsiteFromScript() {
const currentDomain = window.location.hostname;
let excludedDomains = JSON.parse(localStorage.getItem('excludedDomains')) || [];
if (!excludedDomains.includes(currentDomain)) {
excludedDomains.push(currentDomain);
localStorage.setItem('excludedDomains', JSON.stringify(excludedDomains));
}
}
// Function to check if the current website's domain should be excluded from running the script
function shouldExcludeWebsite() {
const currentDomain = window.location.hostname;
const excludedDomains = JSON.parse(localStorage.getItem('excludedDomains')) || [];
return excludedDomains.includes(currentDomain);
}
// Function to find PDF links on the page and add download buttons
function findAndAddPDFDownloadButtons() {
if (!shouldExcludeWebsite()) {
const links = document.querySelectorAll('a, iframe');
links.forEach(link => {
let pdfLink;
if (link.tagName.toLowerCase() === 'iframe') {
const dataSource = link.getAttribute('data-source');
if (dataSource) {
pdfLink = getPDFLinkFromDataSource(dataSource);
}
} else if (isPDFLink(link.href)) {
pdfLink = link.href;
}
if (pdfLink) {
addDownloadButton(link, pdfLink);
}
});
// Check if there are more than two PDFs on the page
const pdfCount = links.filter(link => isPDFLink(link.href)).length;
if (pdfCount > 2) {
const allButton = document.createElement('button');
allButton.innerText = '⬇️ Download all ' + pdfCount;
allButton.style.position = 'absolute';
allButton.style.top = '0px';
allButton.style.right = '0px';
allButton.style.backgroundColor = 'violet'; // Change color to violet
allButton.style.color = 'white';
allButton.style.border = 'none';
allButton.style.padding = '5px 10px';
allButton.style.cursor = 'pointer';
allButton.addEventListener('click', function(event) {
event.preventDefault();
downloadAllPDFs();
});
document.body.appendChild(allButton);
}
}
}
// Function to extract PDF link from data-source attribute
function getPDFLinkFromDataSource(dataSource) {
const match = dataSource.match(/file=([^&]+)/);
if (match && match[1]) {
return decodeURIComponent(match[1]);
}
return null;
}
// Function to download all PDFs
function downloadAllPDFs() {
const links = document.querySelectorAll('a, iframe');
links.forEach(link => {
let pdfLink;
if (link.tagName.toLowerCase() === 'iframe') {
const dataSource = link.getAttribute('data-source');
if (dataSource) {
pdfLink = getPDFLinkFromDataSource(dataSource);
}
} else if (isPDFLink(link.href)) {
pdfLink = link.href;
}
if (pdfLink) {
window.open(pdfLink, '_blank');
}
});
}
// Run the function when the page is fully loaded
window.addEventListener('load', findAndAddPDFDownloadButtons);
})();