Download protected PDF files from Google Drive with quality options
// ==UserScript==
// @name Enhanced Google Drive PDF Downloader
// @namespace GoogleDrivePDFDownloader
// @version 2
// @description Download protected PDF files from Google Drive with quality options
// @author akvabhi
// @match https://drive.google.com/*
// @grant none
// @homepage https://github.com/Akv2021/Enhanced-Google-Drive-PDF-Downloader
// @license MIT
// ==/UserScript==
(function () {
'use strict';
const COLORS = {
fast: '#2ecc71', // Green for fast mode
slow: '#e74c3c', // Red for slow mode
hover: '#3367d6',
default: '#4285f4'
};
// Utility functions
const log = (message, type = 'info') => {
const timestamp = new Date().toLocaleTimeString();
const logMethod = type === 'error' ? console.error : console.log;
logMethod(`[PDF Downloader ${timestamp}] ${message}`);
};
const delay = ms => new Promise(resolve => setTimeout(resolve, ms));
// Global quality setting
window.pdfQualityMode = 'FAST'; // Default to fast mode
const progressIndicator = {
element: null,
create() {
const indicator = document.createElement('div');
indicator.style.cssText = `
position: fixed;
top: 65px;
right: 20px;
z-index: 9999;
padding: 8px 16px;
background-color: #4285f4;
color: white;
border-radius: 4px;
font-family: Arial, sans-serif;
font-size: 14px;
display: none;
box-shadow: 0 2px 5px rgba(0,0,0,0.2);
line-height: 20px;
min-height: 20px;
display: flex;
align-items: center;
transition: all 0.3s ease;
`;
document.body.appendChild(indicator);
this.element = indicator;
},
show(message) {
if (!this.element) this.create();
this.element.style.display = 'block';
this.element.style.opacity = '0';
setTimeout(() => {
this.element.style.opacity = '1';
this.element.textContent = message;
}, 10);
const downloadContainer = document.querySelector('#pdfDownloadContainer');
if (downloadContainer) downloadContainer.style.display = 'none';
},
hide() {
if (this.element) {
this.element.style.opacity = '0';
setTimeout(() => {
this.element.style.display = 'none';
const downloadContainer = document.querySelector('#pdfDownloadContainer');
if (downloadContainer) {
downloadContainer.style.display = 'flex';
downloadContainer.style.opacity = '1';
}
}, 300);
}
},
updateProgress(current, total) {
const percentage = Math.floor((current / total) * 100);
this.show(`Processing: ${percentage}% (${current}/${total} pages)`);
}
};
async function loadJsPDF() {
return new Promise((resolve, reject) => {
log('Loading jsPDF library...');
progressIndicator.show('Loading PDF library...');
const script = document.createElement('script');
const scriptURL = 'https://unpkg.com/jspdf@latest/dist/jspdf.umd.min.js';
if (window.trustedTypes && trustedTypes.createPolicy) {
const policy = trustedTypes.createPolicy('pdfDownloaderPolicy', {
createScriptURL: (input) => input
});
script.src = policy.createScriptURL(scriptURL);
} else {
script.src = scriptURL;
}
script.onload = () => {
log('jsPDF library loaded successfully');
resolve();
};
script.onerror = (error) => {
log('Failed to load jsPDF library', 'error');
reject(error);
};
document.body.appendChild(script);
});
}
async function convertImageToBase64(img) {
try {
const canvas = document.createElement('canvas');
canvas.width = img.naturalWidth;
canvas.height = img.naturalHeight;
const ctx = canvas.getContext('2d');
ctx.drawImage(img, 0, 0, img.naturalWidth, img.naturalHeight);
return canvas.toDataURL('image/png', 1.0);
} catch (error) {
log(`Error converting image to base64: ${error.message}`, 'error');
throw error;
}
}
function getValidPdfPages() {
const images = Array.from(document.getElementsByTagName('img'));
return images.filter(img =>
img.src.startsWith('blob:https://drive.google.com/') &&
img.naturalWidth > 0 &&
img.naturalHeight > 0
);
}
async function generatePDF(images) {
log(`Starting PDF generation with ${images.length} pages`);
const {
jsPDF
} = window.jspdf;
let pdf = null;
for (let i = 0; i < images.length; i++) {
const img = images[i];
const orientation = img.naturalWidth > img.naturalHeight ? 'l' : 'p';
if (!pdf) {
pdf = new jsPDF({
orientation: orientation,
unit: 'px',
format: [img.naturalWidth, img.naturalHeight],
hotfixes: ['px_scaling']
});
}
if (i > 0) {
pdf.addPage([img.naturalWidth, img.naturalHeight], orientation);
}
progressIndicator.show(`Converting page ${i + 1}/${images.length}...`);
const imgData = await convertImageToBase64(img);
pdf.addImage(imgData, 'PNG', 0, 0, img.naturalWidth, img.naturalHeight, '', window.pdfQualityMode);
progressIndicator.updateProgress(i + 1, images.length);
await delay(50);
}
return pdf;
}
async function downloadPDF() {
try {
const button = document.querySelector('#pdfDownloadButton');
button.disabled = true;
button.textContent = '⏳ Processing...';
log('Starting PDF download process...');
progressIndicator.show('Initializing...');
await loadJsPDF();
const validPages = getValidPdfPages();
if (validPages.length === 0) {
throw new Error('No valid PDF pages found. Please scroll through the document first.');
}
log(`Found ${validPages.length} valid pages`);
const pdf = await generatePDF(validPages);
const fileName = document.querySelector('meta[itemprop="name"]')?.content || 'download.pdf';
const finalFileName = fileName.toLowerCase().endsWith('.pdf') ? fileName : `${fileName}.pdf`;
progressIndicator.show(`Saving as ${finalFileName}...`);
await pdf.save(finalFileName, {
returnPromise: true
});
log('PDF downloaded successfully!');
progressIndicator.show('Download complete!');
button.disabled = false;
button.textContent = window.pdfQualityMode === 'SLOW' ?
'Download PDF (Best Quality)' : 'Download PDF (Fast)';
setTimeout(() => progressIndicator.hide(), 3000);
} catch (error) {
log(`Failed to generate PDF: ${error.message}`, 'error');
progressIndicator.show(`Error: ${error.message}`);
const button = document.querySelector('#pdfDownloadButton');
button.disabled = false;
button.textContent = window.pdfQualityMode === 'SLOW' ?
'Download PDF (Best Quality)' : 'Download PDF (Fast)';
alert(`Failed to generate PDF: ${error.message}`);
}
}
function updateDownloadButtonText(isHighQuality) {
const button = document.querySelector('#pdfDownloadButton');
if (button) {
const newText = isHighQuality ? 'Download PDF (Best Quality)' : 'Download PDF (Fast)';
button.style.opacity = '0';
setTimeout(() => {
button.textContent = newText;
button.style.opacity = '1';
}, 150);
}
}
function createToggleSwitch() {
const toggleContainer = document.createElement('div');
toggleContainer.style.cssText = `
display: flex;
flex-direction: column;
align-items: center;
margin: 12px 0;
width: 100%;
`;
const switchLabel = document.createElement('div');
switchLabel.textContent = 'Quality Mode:';
switchLabel.style.marginBottom = '8px';
const switchControl = document.createElement('div');
switchControl.style.cssText = `
display: flex;
flex-direction: column;
align-items: center;
width: 100%;
`;
const toggleSwitch = document.createElement('label');
toggleSwitch.style.cssText = `
position: relative;
display: inline-block;
width: 46px;
height: 24px;
`;
const toggleInput = document.createElement('input');
toggleInput.type = 'checkbox';
toggleInput.checked = false; // Default to fast mode
toggleInput.style.cssText = `
opacity: 0;
width: 0;
height: 0;
`;
const toggleSlider = document.createElement('span');
toggleSlider.style.cssText = `
position: absolute;
cursor: pointer;
top: 0;
left: 0;
right: 0;
bottom: 0;
background-color: ${COLORS.fast};
transition: .4s;
border-radius: 24px;
`;
const sliderBall = document.createElement('span');
sliderBall.style.cssText = `
position: absolute;
content: '';
height: 18px;
width: 18px;
left: 3px;
bottom: 3px;
background-color: white;
transition: .4s;
border-radius: 50%;
transform: translateX(0);
`;
const labelsContainer = document.createElement('div');
labelsContainer.style.cssText = `
display: flex;
justify-content: space-between;
width: 200px;
margin-top: 8px;
font-size: 12px;
color: #888;
`;
const lowLabel = document.createElement('span');
lowLabel.textContent = 'Low (Fast)';
lowLabel.style.cssText = `
transition: color 0.3s ease;
color: #4285f4;
`;
const highLabel = document.createElement('span');
highLabel.textContent = 'High (Slow)';
highLabel.style.cssText = `
transition: color 0.3s ease;
color: #888;
`;
toggleInput.addEventListener('change', (e) => {
const isHighQuality = e.target.checked;
sliderBall.style.transform = isHighQuality ? 'translateX(22px)' : 'translateX(0)';
toggleSlider.style.backgroundColor = isHighQuality ? COLORS.slow : COLORS.fast;
window.pdfQualityMode = isHighQuality ? 'SLOW' : 'FAST';
lowLabel.style.color = isHighQuality ? '#888' : '#fff';
highLabel.style.color = isHighQuality ? '#fff' : '#888';
updateDownloadButtonText(isHighQuality);
});
toggleSlider.appendChild(sliderBall);
toggleSwitch.appendChild(toggleInput);
toggleSwitch.appendChild(toggleSlider);
labelsContainer.appendChild(lowLabel);
labelsContainer.appendChild(highLabel);
switchControl.appendChild(toggleSwitch);
switchControl.appendChild(labelsContainer);
toggleContainer.appendChild(switchLabel);
toggleContainer.appendChild(switchControl);
return toggleContainer;
}
function addDownloadButton() {
const container = document.createElement('div');
container.id = 'pdfDownloadContainer';
container.style.cssText = `
position: fixed;
top: 65px;
right: 20px;
z-index: 9999;
display: flex;
align-items: center;
gap: 8px;
transition: opacity 0.3s ease;
`;
const button = document.createElement('button');
button.id = 'pdfDownloadButton';
button.textContent = 'Download PDF (Fast)';
button.style.cssText = `
padding: 8px 16px;
background-color: #4285f4;
color: white;
border: none;
border-radius: 4px;
cursor: pointer;
font-family: Arial, sans-serif;
font-size: 14px;
box-shadow: 0 2px 5px rgba(0,0,0,0.2);
height: 36px;
display: flex;
align-items: center;
transition: all 0.3s ease;
opacity: 1;
`;
const infoIcon = document.createElement('div');
infoIcon.id = 'pdfInfoIcon'; // Add ID for click-outside handling
infoIcon.innerHTML = 'ℹ️';
infoIcon.style.cssText = `
cursor: help;
font-size: 16px;
position: relative;
width: 36px;
height: 36px;
background-color: #4285f4;
border-radius: 4px;
display: flex;
align-items: center;
justify-content: center;
box-shadow: 0 2px 5px rgba(0,0,0,0.2);
transition: background-color 0.3s ease;
`;
const tooltip = document.createElement('div');
tooltip.id = 'pdfDownloadTooltip'; // Add ID for click-outside handling
tooltip.style.cssText = `
position: absolute;
top: calc(100% + 8px);
right: 0;
background-color: #333;
color: white;
padding: 16px;
border-radius: 4px;
font-size: 13px;
width: 280px;
display: none;
z-index: 10000;
font-family: Arial, sans-serif;
box-shadow: 0 2px 10px rgba(0,0,0,0.2);
transition: opacity 0.3s ease;
`;
// Info content
const scrollInfo = document.createElement('div');
scrollInfo.textContent = '⚠️ If some pages are missing, scroll to bottom to load all pages and retry.';
scrollInfo.style.marginBottom = '8px';
const qualityInfo = document.createElement('div');
qualityInfo.style.cssText = `
margin-bottom: 2px;
padding: 8px;
background-color: rgba(255,255,255,0.1);
border-radius: 4px;
`;
qualityInfo.innerHTML = `
<div style="margin-bottom: 8px; font-weight: bold;">Processing Modes:</div>
<div style="font-size: 12px; line-height: 1.4;">
• Fast: Quick processing (few seconds)<br>
• Slow: Detailed processing (may take longer)
</div>
`;
// Add toggle switch
const toggleSwitch = createToggleSwitch();
// Footer with author and GitHub link
const footer = document.createElement('div');
footer.style.cssText = `
display: flex;
align-items: center;
justify-content: center;
margin-top: 4px;
padding-top: 12px;
border-top: 1px solid rgba(255,255,255,0.1);
`;
const authorText = document.createElement('span');
authorText.textContent = 'Track Issues ';
authorText.style.marginRight = '8px';
const githubLink = document.createElement('a');
githubLink.href = 'https://github.com/Akv2021/Enhanced-Google-Drive-PDF-Downloader/issues';
githubLink.target = '_blank';
githubLink.style.cssText = `
color: white;
text-decoration: none;
display: flex;
align-items: center;
transition: opacity 0.3s ease;
`;
githubLink.innerHTML = `
<svg height="20" width="20" viewBox="0 0 16 16" style="fill: white;">
<path d="M8 0C3.58 0 0 3.58 0 8c0 3.54 2.29 6.53 5.47 7.59.4.07.55-.17.55-.38 0-.19-.01-.82-.01-1.49-2.01.37-2.53-.49-2.69-.94-.09-.23-.48-.94-.82-1.13-.28-.15-.68-.52-.01-.53.63-.01 1.08.58 1.23.82.72 1.21 1.87.87 2.33.66.07-.52.28-.87.51-1.07-1.78-.2-3.64-.89-3.64-3.95 0-.87.31-1.59.82-2.15-.08-.2-.36-1.02.08-2.12 0 0 .67-.21 2.2.82.64-.18 1.32-.27 2-.27.68 0 1.36.09 2 .27 1.53-1.04 2.2-.82 2.2-.82.44 1.1.16 1.92.08 2.12.51.56.82 1.27.82 2.15 0 3.07-1.87 3.75-3.65 3.95.29.25.54.73.54 1.48 0 1.07-.01 1.93-.01 2.2 0 .21.15.46.55.38A8.013 8.013 0 0016 8c0-4.42-3.58-8-8-8z"/>
</svg>
`;
// Tooltip persistence
let tooltipTimer = null;
let isTooltipHovered = false;
function startTooltipTimer() {
if (tooltipTimer) {
clearTimeout(tooltipTimer);
}
tooltipTimer = setTimeout(() => {
if (!isTooltipHovered) {
tooltip.style.opacity = '0';
setTimeout(() => tooltip.style.display = 'none', 300);
infoIcon.style.backgroundColor = '#4285f4';
}
}, 60000); // 60 second timeout
}
tooltip.addEventListener('mouseenter', () => {
isTooltipHovered = true;
if (tooltipTimer) {
clearTimeout(tooltipTimer);
}
});
tooltip.addEventListener('mouseleave', () => {
isTooltipHovered = false;
startTooltipTimer();
});
infoIcon.addEventListener('mouseenter', () => {
tooltip.style.display = 'block';
tooltip.style.opacity = '0';
setTimeout(() => tooltip.style.opacity = '1', 10);
infoIcon.style.backgroundColor = '#3367d6';
startTooltipTimer();
});
infoIcon.addEventListener('mouseleave', () => {
if (!isTooltipHovered) {
startTooltipTimer();
}
});
button.addEventListener('mouseover', () => {
if (!button.disabled) button.style.backgroundColor = '#3367d6';
});
button.addEventListener('mouseout', () => {
if (!button.disabled) button.style.backgroundColor = '#4285f4';
});
button.addEventListener('click', downloadPDF);
// Assemble tooltip
tooltip.appendChild(scrollInfo);
tooltip.appendChild(qualityInfo);
tooltip.appendChild(toggleSwitch);
footer.appendChild(authorText);
footer.appendChild(githubLink);
tooltip.appendChild(footer);
// Assemble final container
infoIcon.appendChild(tooltip);
container.appendChild(button);
container.appendChild(infoIcon);
document.body.appendChild(container);
}
function initialize() {
log('Initializing PDF downloader...');
if (document.readyState === 'loading') {
document.addEventListener('DOMContentLoaded', () => {
addDownloadButton();
setupClickOutside();
});
} else {
addDownloadButton();
setupClickOutside();
}
}
// Add this new function for click-outside handling
function setupClickOutside() {
document.addEventListener('click', (event) => {
const tooltip = document.querySelector('#pdfDownloadTooltip');
const infoIcon = document.querySelector('#pdfInfoIcon');
if (tooltip &&
!tooltip.contains(event.target) &&
!infoIcon.contains(event.target)) {
tooltip.style.opacity = '0';
setTimeout(() => tooltip.style.display = 'none', 300);
infoIcon.style.backgroundColor = COLORS.default;
}
});
}
initialize();
})();