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|
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Just Redact - PDF redaction tool</title>
<script src="https://cdnjs.cloudflare.com/ajax/libs/pdf.js/3.11.174/pdf.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jspdf/2.5.1/jspdf.umd.min.js"></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/pdf.js/3.11.174/pdf_viewer.min.css">
<style>
body {
font-family: sans-serif;
background: #f0f0f0;
margin: 0;
padding: 20px;
display: flex;
flex-direction: column;
align-items: center;
}
#controls {
background: white;
padding: 15px;
border-radius: 8px;
box-shadow: 0 2px 5px rgba(0,0,0,0.1);
margin-bottom: 20px;
display: flex;
gap: 15px;
align-items: center;
position: sticky;
top: 20px;
z-index: 1000;
}
.tool-group {
display: flex;
background: #e9ecef;
border-radius: 4px;
padding: 2px;
}
.tool-group label {
padding: 6px 12px;
cursor: pointer;
border-radius: 4px;
font-size: 14px;
user-select: none;
}
.tool-group input[type="radio"] {
display: none;
}
.tool-group input[type="radio"]:checked + label {
background: white;
box-shadow: 0 1px 3px rgba(0,0,0,0.1);
font-weight: bold;
color: #007bff;
}
button {
padding: 8px 16px;
background: #007bff;
color: white;
border: none;
border-radius: 4px;
cursor: pointer;
font-size: 14px;
display: flex;
align-items: center;
gap: 6px;
}
button svg {
width: 18px;
height: 18px;
}
button:hover {
background: #0056b3;
}
button:disabled {
background: #ccc;
cursor: not-allowed;
}
#file-input {
display: none;
}
.custom-file-upload {
border: 1px solid #ccc;
display: inline-block;
padding: 6px 12px;
cursor: pointer;
border-radius: 4px;
background: #f8f9fa;
}
#container {
display: flex;
flex-direction: column;
gap: 20px;
}
/* Mode: Select (disable overlay pointer events so text is selectable) */
.mode-select .page-overlay {
pointer-events: none;
}
/* Mode: Draw (enable overlay pointer events) */
.mode-draw .page-overlay {
pointer-events: auto;
}
.page-wrapper {
position: relative;
box-shadow: 0 4px 6px rgba(0,0,0,0.1);
background: white;
}
.page-overlay {
position: absolute;
top: 0;
left: 0;
z-index: 20; /* Above TextLayer (usually 1 or 2) */
cursor: crosshair;
}
/* pdf.js TextLayer styles are imported, but we ensure it fits */
.textLayer {
position: absolute;
top: 0;
left: 0;
right: 0;
bottom: 0;
overflow: hidden;
line-height: 1.0;
z-index: 5;
}
.redaction-box {
position: absolute;
background-color: rgba(0, 0, 0, 0.7);
border: 1px solid red;
cursor: move; /* Changed to move for dragging */
box-sizing: border-box;
z-index: 30; /* Above everything */
pointer-events: auto !important; /* Always interactive */
}
.redaction-box:hover {
background-color: rgba(255, 0, 0, 0.5);
border: 1px solid #ff0000;
}
/* Resize Handles */
.resize-handle {
position: absolute;
width: 10px;
height: 10px;
background: white;
border: 1px solid black;
z-index: 31;
}
.handle-nw { top: -5px; left: -5px; cursor: nw-resize; }
.handle-ne { top: -5px; right: -5px; cursor: ne-resize; }
.handle-sw { bottom: -5px; left: -5px; cursor: sw-resize; }
.handle-se { bottom: -5px; right: -5px; cursor: se-resize; }
/* Delete Button */
.delete-btn {
position: absolute;
top: -12px;
right: -12px;
width: 20px;
height: 20px;
background: red;
color: white;
border-radius: 50%;
text-align: center;
line-height: 18px;
font-size: 14px;
font-weight: bold;
cursor: pointer;
border: 1px solid white;
display: none;
z-index: 32;
}
.redaction-box:hover .delete-btn {
display: block;
}
/* Floating Redact Button */
#redact-selection-btn {
position: fixed;
display: none;
z-index: 2000;
padding: 8px 12px;
background: #333;
color: white;
border-radius: 4px;
font-size: 13px;
box-shadow: 0 2px 10px rgba(0,0,0,0.2);
transform: translate(-50%, -100%); /* Center above cursor */
pointer-events: auto;
}
#redact-selection-btn:after {
content: '';
position: absolute;
top: 100%;
left: 50%;
margin-left: -6px;
border-width: 6px;
border-style: solid;
border-color: #333 transparent transparent transparent;
}
/* Loading spinner */
.loader {
border: 4px solid #f3f3f3;
border-top: 4px solid #3498db;
border-radius: 50%;
width: 30px;
height: 30px;
animation: spin 1s linear infinite;
display: none;
}
@keyframes spin {
0% { transform: rotate(0deg); }
100% { transform: rotate(360deg); }
}
</style>
</head>
<body>
<div id="controls">
<label for="file-input" class="custom-file-upload">
📂 Open PDF
</label>
<input id="file-input" type="file" accept="application/pdf" />
<div class="tool-group">
<input type="radio" id="mode-draw" name="mode" value="draw" checked>
<label for="mode-draw">✏️ Draw</label>
<input type="radio" id="mode-select" name="mode" value="select">
<label for="mode-select">📝 Select Text</label>
</div>
<span id="page-count"></span>
<button id="export-btn" disabled>
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M4 14.899A7 7 0 1 1 15.71 8h1.79a4.5 4.5 0 0 1 2.5 8.242"></path><path d="M12 12v9"></path><path d="m8 17 4 4 4-4"></path></svg>
<span id="export-btn-text">Export Redacted PDF</span>
</button>
<div class="loader" id="loader"></div>
</div>
<button id="redact-selection-btn">Redact Selection</button>
<div id="container" class="mode-draw"></div>
<script>
// Set up PDF.js worker
pdfjsLib.GlobalWorkerOptions.workerSrc = 'https://cdnjs.cloudflare.com/ajax/libs/pdf.js/3.11.174/pdf.worker.min.js';
const fileInput = document.getElementById('file-input');
const container = document.getElementById('container');
const exportBtn = document.getElementById('export-btn');
const exportBtnText = document.getElementById('export-btn-text');
const loader = document.getElementById('loader');
const pageCountSpan = document.getElementById('page-count');
const redactSelectionBtn = document.getElementById('redact-selection-btn');
const modeRadios = document.querySelectorAll('input[name="mode"]');
let pdfDoc = null;
let redactionsMap = new Map(); // pageIndex -> [div, div, ...]
let scale = 1.5; // Viewport scale
// Mode Switching
modeRadios.forEach(radio => {
radio.addEventListener('change', (e) => {
if (e.target.checked) {
container.className = `mode-${e.target.value}`;
// Clear any selection/buttons when switching modes
window.getSelection().removeAllRanges();
redactSelectionBtn.style.display = 'none';
}
});
});
// Text Selection Listener
document.addEventListener('selectionchange', () => {
const selection = window.getSelection();
if (selection.isCollapsed || container.classList.contains('mode-draw')) {
redactSelectionBtn.style.display = 'none';
return;
}
// Check if selection is inside a PDF page
const range = selection.getRangeAt(0);
const containerRect = container.getBoundingClientRect();
// Just use the last rect to position the button
const rects = range.getClientRects();
if (rects.length > 0) {
const lastRect = rects[rects.length - 1];
redactSelectionBtn.style.left = `${lastRect.left + (lastRect.width / 2)}px`;
redactSelectionBtn.style.top = `${lastRect.top - 10}px`;
redactSelectionBtn.style.display = 'block';
}
});
// "Redact Selection" Click Handler
redactSelectionBtn.addEventListener('click', () => {
const selection = window.getSelection();
if (selection.isCollapsed) return;
const range = selection.getRangeAt(0);
const rects = range.getClientRects();
// Find which page(s) these rects belong to
// We iterate all rects because a selection might cross pages (though pdf.js usually handles pages separately)
for (let i = 0; i < rects.length; i++) {
const clientRect = rects[i];
// Hit test against page wrappers
const wrappers = document.querySelectorAll('.page-wrapper');
for (let wrapper of wrappers) {
const wrapperRect = wrapper.getBoundingClientRect();
// Check intersection
if (clientRect.top >= wrapperRect.top &&
clientRect.bottom <= wrapperRect.bottom &&
clientRect.left >= wrapperRect.left &&
clientRect.right <= wrapperRect.right) {
// It belongs to this page
const pageNum = parseInt(wrapper.dataset.pageIndex);
const overlay = wrapper.querySelector('.page-overlay');
// Convert to overlay relative coords
const x = clientRect.left - wrapperRect.left;
const y = clientRect.top - wrapperRect.top;
const w = clientRect.width;
const h = clientRect.height;
createRedactionBox(overlay, pageNum, x, y, w, h);
}
}
}
window.getSelection().removeAllRanges();
redactSelectionBtn.style.display = 'none';
});
function createRedactionBox(overlay, pageNum, x, y, w, h) {
const box = document.createElement('div');
box.className = 'redaction-box';
box.style.left = `${x}px`;
box.style.top = `${y}px`;
box.style.width = `${w}px`;
box.style.height = `${h}px`;
overlay.appendChild(box);
makeInteractive(box, overlay, pageNum);
if (!redactionsMap.has(pageNum)) {
redactionsMap.set(pageNum, []);
}
redactionsMap.get(pageNum).push(box);
}
function setupDrawing(overlay, pageNum) {
let isDrawing = false;
let startX, startY;
let currentBox = null;
overlay.addEventListener('mousedown', (e) => {
// Don't start drawing if clicking on an existing box or its controls
if (e.target.closest('.redaction-box')) return;
isDrawing = true;
const rect = overlay.getBoundingClientRect();
startX = e.clientX - rect.left;
startY = e.clientY - rect.top;
currentBox = document.createElement('div');
currentBox.className = 'redaction-box';
currentBox.style.left = `${startX}px`;
currentBox.style.top = `${startY}px`;
currentBox.style.width = '0px';
currentBox.style.height = '0px';
overlay.appendChild(currentBox);
});
overlay.addEventListener('mousemove', (e) => {
if (!isDrawing) return;
const rect = overlay.getBoundingClientRect();
const currentX = e.clientX - rect.left;
const currentY = e.clientY - rect.top;
const width = currentX - startX;
const height = currentY - startY;
currentBox.style.width = `${Math.abs(width)}px`;
currentBox.style.height = `${Math.abs(height)}px`;
currentBox.style.left = `${width < 0 ? currentX : startX}px`;
currentBox.style.top = `${height < 0 ? currentY : startY}px`;
});
overlay.addEventListener('mouseup', (e) => {
if (!isDrawing) return;
isDrawing = false;
// Finalize box
const w = parseFloat(currentBox.style.width);
const h = parseFloat(currentBox.style.height);
// Ignore tiny clicks
if (w < 5 && h < 5) {
currentBox.remove();
return;
}
// Make interactive (drag/resize/delete)
makeInteractive(currentBox, overlay, pageNum);
// Store in state
if (!redactionsMap.has(pageNum)) {
redactionsMap.set(pageNum, []);
}
redactionsMap.get(pageNum).push(currentBox);
currentBox = null;
});
}
fileInput.addEventListener('change', async (e) => {
const file = e.target.files[0];
if (!file) return;
// Reset
container.innerHTML = '';
redactionsMap.clear();
exportBtn.disabled = true;
pageCountSpan.innerText = 'Loading...';
const fileReader = new FileReader();
fileReader.onload = async function() {
const typedarray = new Uint8Array(this.result);
try {
pdfDoc = await pdfjsLib.getDocument(typedarray).promise;
pageCountSpan.innerText = `${pdfDoc.numPages} Pages`;
renderPages();
exportBtn.disabled = false;
} catch (error) {
console.error('Error loading PDF:', error);
alert('Error loading PDF. Please check the console.');
}
};
fileReader.readAsArrayBuffer(file);
});
async function renderPages() {
for (let i = 1; i <= pdfDoc.numPages; i++) {
await renderPage(i);
}
}
async function renderPage(num) {
const page = await pdfDoc.getPage(num);
const viewport = page.getViewport({ scale: scale });
// Create Wrapper
const wrapper = document.createElement('div');
wrapper.className = 'page-wrapper';
wrapper.style.width = `${viewport.width}px`;
wrapper.style.height = `${viewport.height}px`;
wrapper.dataset.pageIndex = num;
// Create Canvas
const canvas = document.createElement('canvas');
const context = canvas.getContext('2d');
canvas.height = viewport.height;
canvas.width = viewport.width;
// Render PDF to Canvas
const renderContext = {
canvasContext: context,
viewport: viewport
};
// Wait for render to finish
await page.render(renderContext).promise;
// Create Text Layer
const textLayerDiv = document.createElement('div');
textLayerDiv.className = 'textLayer';
textLayerDiv.style.width = `${viewport.width}px`;
textLayerDiv.style.height = `${viewport.height}px`;
try {
const textContent = await page.getTextContent();
await pdfjsLib.renderTextLayer({
textContentSource: textContent,
container: textLayerDiv,
viewport: viewport,
textDivs: []
}).promise;
} catch (error) {
console.warn(`Text layer rendering failed for page ${num}:`, error);
}
// Create Overlay for Drawing
const overlay = document.createElement('div');
overlay.className = 'page-overlay';
overlay.style.width = '100%';
overlay.style.height = '100%';
// Interaction Logic
setupDrawing(overlay, num);
wrapper.appendChild(canvas);
wrapper.appendChild(textLayerDiv); // Text Layer sits between Canvas and Overlay
wrapper.appendChild(overlay);
container.appendChild(wrapper);
}
function makeInteractive(box, overlay, pageNum) {
// Add Delete Button
const delBtn = document.createElement('div');
delBtn.className = 'delete-btn';
delBtn.innerText = '×';
delBtn.title = 'Remove Redaction';
delBtn.addEventListener('mousedown', (e) => {
e.stopPropagation(); // Stop drag start
box.remove();
removeFromState(pageNum, box);
});
box.appendChild(delBtn);
// Add Resize Handles
const positions = ['nw', 'ne', 'sw', 'se'];
positions.forEach(pos => {
const handle = document.createElement('div');
handle.className = `resize-handle handle-${pos}`;
handle.dataset.pos = pos;
box.appendChild(handle);
setupResize(handle, box);
});
// Dragging Logic
box.addEventListener('mousedown', (e) => {
if (e.target !== box) return; // Only drag if clicking body, not handles/buttons
e.preventDefault(); // Prevent text selection
const startX = e.clientX;
const startY = e.clientY;
const startLeft = parseFloat(box.style.left);
const startTop = parseFloat(box.style.top);
const maxX = overlay.offsetWidth - box.offsetWidth;
const maxY = overlay.offsetHeight - box.offsetHeight;
function onMouseMove(moveEvent) {
const dx = moveEvent.clientX - startX;
const dy = moveEvent.clientY - startY;
let newLeft = startLeft + dx;
let newTop = startTop + dy;
// Constrain to overlay
newLeft = Math.max(0, Math.min(newLeft, maxX));
newTop = Math.max(0, Math.min(newTop, maxY));
box.style.left = `${newLeft}px`;
box.style.top = `${newTop}px`;
}
function onMouseUp() {
document.removeEventListener('mousemove', onMouseMove);
document.removeEventListener('mouseup', onMouseUp);
}
document.addEventListener('mousemove', onMouseMove);
document.addEventListener('mouseup', onMouseUp);
});
}
function setupResize(handle, box) {
handle.addEventListener('mousedown', (e) => {
e.preventDefault();
e.stopPropagation();
const pos = handle.dataset.pos;
const startX = e.clientX;
const startY = e.clientY;
const startWidth = parseFloat(box.style.width);
const startHeight = parseFloat(box.style.height);
const startLeft = parseFloat(box.style.left);
const startTop = parseFloat(box.style.top);
function onMouseMove(moveEvent) {
const dx = moveEvent.clientX - startX;
const dy = moveEvent.clientY - startY;
if (pos.includes('e')) {
box.style.width = `${Math.max(10, startWidth + dx)}px`;
}
if (pos.includes('s')) {
box.style.height = `${Math.max(10, startHeight + dy)}px`;
}
if (pos.includes('w')) {
const newWidth = Math.max(10, startWidth - dx);
box.style.width = `${newWidth}px`;
// Adjust left only if width actually changed (not at min limit)
if (newWidth !== 10) {
box.style.left = `${startLeft + dx}px`;
}
}
if (pos.includes('n')) {
const newHeight = Math.max(10, startHeight - dy);
box.style.height = `${newHeight}px`;
if (newHeight !== 10) {
box.style.top = `${startTop + dy}px`;
}
}
}
function onMouseUp() {
document.removeEventListener('mousemove', onMouseMove);
document.removeEventListener('mouseup', onMouseUp);
}
document.addEventListener('mousemove', onMouseMove);
document.addEventListener('mouseup', onMouseUp);
});
}
function removeFromState(pageNum, boxElement) {
const list = redactionsMap.get(pageNum);
if (list) {
const index = list.indexOf(boxElement);
if (index > -1) {
list.splice(index, 1);
}
}
}
// --- Export Logic ---
exportBtn.addEventListener('click', async () => {
if (!pdfDoc) return;
exportBtn.disabled = true;
exportBtnText.innerText = 'Processing...';
loader.style.display = 'block';
// Wait a moment for UI to update
await new Promise(resolve => setTimeout(resolve, 100));
try {
const { jsPDF } = window.jspdf;
const doc = new jsPDF({ unit: 'pt', orientation: 'p' });
doc.deletePage(1);
for (let i = 1; i <= pdfDoc.numPages; i++) {
const page = await pdfDoc.getPage(i);
const exportScale = 2.0;
const viewport = page.getViewport({ scale: exportScale });
const canvas = document.createElement('canvas');
canvas.width = viewport.width;
canvas.height = viewport.height;
const ctx = canvas.getContext('2d');
await page.render({ canvasContext: ctx, viewport: viewport }).promise;
// Apply Redactions
if (redactionsMap.has(i)) {
ctx.fillStyle = '#000000'; // Solid black
const scaleRatio = exportScale / scale;
const boxes = redactionsMap.get(i);
boxes.forEach(box => {
const rect = {
x: parseFloat(box.style.left),
y: parseFloat(box.style.top),
w: parseFloat(box.style.width),
h: parseFloat(box.style.height)
};
ctx.fillRect(
rect.x * scaleRatio,
rect.y * scaleRatio,
rect.w * scaleRatio,
rect.h * scaleRatio
);
});
}
const imgData = canvas.toDataURL('image/jpeg', 0.8);
const originalViewport = page.getViewport({ scale: 1.0 });
doc.addPage([originalViewport.width, originalViewport.height]);
doc.addImage(imgData, 'JPEG', 0, 0, originalViewport.width, originalViewport.height);
}
doc.save('redacted-document.pdf');
} catch (err) {
console.error("Export failed:", err);
alert("Export failed. See console.");
} finally {
exportBtn.disabled = false;
exportBtnText.innerText = 'Export Redacted PDF';
loader.style.display = 'none';
}
});
</script>
</body>
</html>
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