tools/html/strip_pdf_metadata.html at main · crypdick/tools · GitHub

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<!--
category: data
-->
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Strip PDF Metadata</title>
    <style>
    :root {
        --primary: #c2410c;
        --primary-hover: #9a3412;
        --bg: #1c1917;
        --surface: #292524;
        --surface-hover: #3c3836;
        --text: #fafaf9;
        --text-muted: #a8a29e;
        --border: #44403c;
        --accent: #78350f;
        --success: #16a34a;
        --success-bg: rgba(22, 163, 74, 0.15);
        --error: #dc2626;
        --error-bg: rgba(220, 38, 38, 0.15);
    }
    * { box-sizing: border-box; }
    body {
        font-family: "Geist", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
        max-width: 720px;
        margin: 0 auto;
        padding: 32px 24px;
        line-height: 1.6;
        color: var(--text);
        background: var(--bg);
        min-height: 100vh;
    }
    h1 {
        font-weight: 700;
        font-size: 2rem;
        margin-bottom: 0.25rem;
        letter-spacing: -0.03em;
        background: linear-gradient(135deg, #fb923c, #ea580c);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }
    .subtitle {
        color: var(--text-muted);
        margin-bottom: 2.5rem;
        font-size: 1.05rem;
    }
    .drop-zone {
        border: 2px dashed var(--border);
        border-radius: 12px;
        padding: 48px 24px;
        text-align: center;
        cursor: pointer;
        transition: all 0.2s ease;
        background: var(--surface);
        margin-bottom: 1.5rem;
    }
    .drop-zone:hover,
    .drop-zone.dragover {
        border-color: var(--primary);
        background: rgba(194, 65, 12, 0.08);
    }
    .drop-zone-icon {
        font-size: 3rem;
        margin-bottom: 1rem;
        opacity: 0.8;
    }
    .drop-zone-text {
        font-size: 1.1rem;
        color: var(--text);
        margin-bottom: 0.5rem;
    }
    .drop-zone-hint {
        font-size: 0.9rem;
        color: var(--text-muted);
    }
    input[type="file"] {
        display: none;
    }
    .file-info {
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: 10px;
        padding: 1.25rem;
        margin-bottom: 1.5rem;
        display: none;
    }
    .file-info.visible {
        display: block;
    }
    .file-header {
        display: flex;
        align-items: center;
        gap: 0.75rem;
        margin-bottom: 1rem;
    }
    .file-icon {
        font-size: 1.5rem;
    }
    .file-name {
        font-weight: 600;
        font-size: 1rem;
        word-break: break-all;
    }
    .file-size {
        font-size: 0.85rem;
        color: var(--text-muted);
    }
    .metadata-section {
        margin-top: 1rem;
    }
    .metadata-title {
        font-weight: 600;
        font-size: 0.85rem;
        color: var(--text-muted);
        text-transform: uppercase;
        letter-spacing: 0.05em;
        margin-bottom: 0.75rem;
    }
    .metadata-grid {
        display: grid;
        gap: 0.5rem;
    }
    .metadata-row {
        display: flex;
        gap: 0.75rem;
        font-size: 0.9rem;
        padding: 0.5rem 0.75rem;
        background: rgba(255,255,255,0.03);
        border-radius: 6px;
    }
    .metadata-key {
        color: var(--text-muted);
        min-width: 100px;
        flex-shrink: 0;
    }
    .metadata-value {
        color: var(--text);
        word-break: break-all;
    }
    .metadata-empty {
        color: var(--text-muted);
        font-style: italic;
        font-size: 0.9rem;
    }
    .actions {
        display: flex;
        gap: 0.75rem;
        flex-wrap: wrap;
    }
    button {
        font-size: 16px;
        font-family: inherit;
        font-weight: 600;
        padding: 12px 24px;
        border: none;
        border-radius: 8px;
        cursor: pointer;
        background: var(--primary);
        color: white;
        transition: all 0.15s ease;
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
    }
    button:hover:not(:disabled) {
        background: var(--primary-hover);
        transform: translateY(-1px);
    }
    button:active:not(:disabled) {
        transform: translateY(0);
    }
    button:disabled {
        opacity: 0.5;
        cursor: not-allowed;
    }
    button.secondary {
        background: var(--surface);
        color: var(--text);
        border: 1px solid var(--border);
    }
    button.secondary:hover:not(:disabled) {
        background: var(--surface-hover);
    }
    .message {
        padding: 14px 16px;
        border-radius: 8px;
        margin-bottom: 1.5rem;
        display: none;
        font-size: 0.95rem;
    }
    .message.error {
        color: #fca5a5;
        background: var(--error-bg);
        border: 1px solid rgba(220, 38, 38, 0.3);
        display: block;
    }
    .message.success {
        color: #86efac;
        background: var(--success-bg);
        border: 1px solid rgba(22, 163, 74, 0.3);
        display: block;
    }
    .message:not(.error):not(.success) {
        display: none;
    }
    .spinner {
        width: 18px;
        height: 18px;
        border: 2px solid rgba(255,255,255,0.3);
        border-top-color: white;
        border-radius: 50%;
        animation: spin 0.8s linear infinite;
    }
    @keyframes spin {
        to { transform: rotate(360deg); }
    }
    .loading-overlay {
        position: fixed;
        inset: 0;
        background: rgba(0,0,0,0.6);
        display: none;
        align-items: center;
        justify-content: center;
        z-index: 100;
    }
    .loading-overlay.visible {
        display: flex;
    }
    .loading-box {
        background: var(--surface);
        border-radius: 12px;
        padding: 2rem;
        text-align: center;
        box-shadow: 0 20px 40px rgba(0,0,0,0.4);
    }
    .loading-box .spinner {
        width: 40px;
        height: 40px;
        border-width: 3px;
        margin: 0 auto 1rem;
    }
    footer {
        margin-top: 64px;
        padding-top: 24px;
        border-top: 1px solid var(--border);
        font-size: 0.875rem;
        color: var(--text-muted);
        text-align: center;
    }
    footer a {
        color: var(--primary);
        text-decoration: none;
    }
    footer a:hover {
        text-decoration: underline;
    }
    footer p {
        margin: 0.5rem 0;
    }

    @media (max-width: 600px) {
        body { padding: 20px 16px; }
        h1 { font-size: 1.6rem; }
        .drop-zone { padding: 32px 16px; }
        .actions { flex-direction: column; }
        button { width: 100%; justify-content: center; }
        .metadata-row { flex-direction: column; gap: 0.25rem; }
        .metadata-key { min-width: auto; }
    }
    </style>
    <link rel="preconnect" href="https://fonts.googleapis.com">
    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
    <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700&display=swap" rel="stylesheet">
</head>
<body>
    <h1>Strip PDF Metadata</h1>
    <p class="subtitle">Remove author, title, timestamps, and other metadata from PDF files. Runs entirely in your browser — files never leave your device.</p>

    <div id="message" class="message"></div>

    <div class="drop-zone" id="drop-zone">
        <div class="drop-zone-icon">📄</div>
        <div class="drop-zone-text">Drop a PDF file here</div>
        <div class="drop-zone-hint">or click to browse</div>
        <input type="file" id="file-input" accept=".pdf,application/pdf">
    </div>

    <div class="file-info" id="file-info">
        <div class="file-header">
            <span class="file-icon">📄</span>
            <div>
                <div class="file-name" id="file-name">document.pdf</div>
                <div class="file-size" id="file-size">1.2 MB</div>
            </div>
        </div>

        <div class="metadata-section">
            <div class="metadata-title">Current Metadata</div>
            <div class="metadata-grid" id="metadata-grid">
                <!-- Filled by JS -->
            </div>
        </div>
    </div>

    <div class="actions">
        <button id="btn-strip" disabled>
            <span id="btn-strip-text">Strip Metadata & Download</span>
        </button>
        <button id="btn-clear" class="secondary" disabled>Clear</button>
    </div>

    <div class="loading-overlay" id="loading">
        <div class="loading-box">
            <div class="spinner"></div>
            <div>Processing PDF...</div>
        </div>
    </div>

    <footer>
        <p>Made by Ricardo Decal. Updated 2025-12-20</p>
        <p>
            <a href="https://tools.ricardodecal.com">Home</a> |
            <a href="https://github.com/ricardodecal/tools/blob/main/html/strip_pdf_metadata.html">View source</a>
        </p>
        <p><a href="https://github.com/ricardodecal/tools/blob/main/LICENSE">Apache 2.0 License</a></p>
    </footer>

    <script src="https://cdn.jsdelivr.net/npm/pdf-lib@1.17.1/dist/pdf-lib.min.js"></script>
    <script type="module">
const { PDFDocument } = PDFLib;

document.addEventListener('DOMContentLoaded', () => {
    const dropZone = document.getElementById('drop-zone');
    const fileInput = document.getElementById('file-input');
    const fileInfo = document.getElementById('file-info');
    const fileName = document.getElementById('file-name');
    const fileSize = document.getElementById('file-size');
    const metadataGrid = document.getElementById('metadata-grid');
    const messageDiv = document.getElementById('message');
    const loadingOverlay = document.getElementById('loading');

    const btnStrip = document.getElementById('btn-strip');
    const btnClear = document.getElementById('btn-clear');

    let currentFile = null;
    let currentPdfDoc = null;

    function showMessage(msg, type) {
        messageDiv.textContent = msg;
        messageDiv.className = 'message ' + type;
    }

    function clearMessage() {
        messageDiv.className = 'message';
    }

    function formatBytes(bytes) {
        if (bytes === 0) return '0 Bytes';
        const k = 1024;
        const sizes = ['Bytes', 'KB', 'MB', 'GB'];
        const i = Math.floor(Math.log(bytes) / Math.log(k));
        return parseFloat((bytes / Math.pow(k, i)).toFixed(2)) + ' ' + sizes[i];
    }

    function formatDate(date) {
        if (!date) return null;
        try {
            if (date instanceof Date) {
                return date.toLocaleString();
            }
            return String(date);
        } catch {
            return String(date);
        }
    }

    function displayMetadata(pdfDoc) {
        const metadataFields = [
            { key: 'Title', value: pdfDoc.getTitle() },
            { key: 'Author', value: pdfDoc.getAuthor() },
            { key: 'Subject', value: pdfDoc.getSubject() },
            { key: 'Creator', value: pdfDoc.getCreator() },
            { key: 'Producer', value: pdfDoc.getProducer() },
            { key: 'Keywords', value: pdfDoc.getKeywords() },
            { key: 'Created', value: formatDate(pdfDoc.getCreationDate()) },
            { key: 'Modified', value: formatDate(pdfDoc.getModificationDate()) },
        ];

        const hasMetadata = metadataFields.some(f => f.value);

        if (!hasMetadata) {
            metadataGrid.innerHTML = '<div class="metadata-empty">No metadata found in this PDF.</div>';
            return;
        }

        metadataGrid.innerHTML = metadataFields
            .filter(f => f.value)
            .map(f => `
                <div class="metadata-row">
                    <span class="metadata-key">${f.key}</span>
                    <span class="metadata-value">${escapeHtml(String(f.value))}</span>
                </div>
            `).join('');
    }

    function escapeHtml(text) {
        const div = document.createElement('div');
        div.textContent = text;
        return div.innerHTML;
    }

    async function loadPdf(file) {
        clearMessage();

        if (!file.type.includes('pdf') && !file.name.toLowerCase().endsWith('.pdf')) {
            showMessage('Please select a PDF file.', 'error');
            return;
        }

        try {
            loadingOverlay.classList.add('visible');

            const arrayBuffer = await file.arrayBuffer();
            const pdfDoc = await PDFDocument.load(arrayBuffer, {
                updateMetadata: false
            });

            currentFile = file;
            currentPdfDoc = pdfDoc;

            fileName.textContent = file.name;
            fileSize.textContent = formatBytes(file.size);

            displayMetadata(pdfDoc);

            fileInfo.classList.add('visible');
            btnStrip.disabled = false;
            btnClear.disabled = false;

        } catch (err) {
            console.error(err);
            showMessage(`Failed to load PDF: ${err.message}`, 'error');
        } finally {
            loadingOverlay.classList.remove('visible');
        }
    }

    async function stripAndDownload() {
        if (!currentPdfDoc || !currentFile) return;

        clearMessage();

        try {
            loadingOverlay.classList.add('visible');

            // Create a new PDF to strip all metadata
            const strippedPdf = await PDFDocument.create();

            // Copy all pages
            const pages = await strippedPdf.copyPages(currentPdfDoc, currentPdfDoc.getPageIndices());
            pages.forEach(page => strippedPdf.addPage(page));

            // The new PDF has no metadata by default
            // Explicitly set empty values to ensure nothing carries over
            strippedPdf.setTitle('');
            strippedPdf.setAuthor('');
            strippedPdf.setSubject('');
            strippedPdf.setCreator('');
            strippedPdf.setProducer('');
            strippedPdf.setKeywords([]);

            const pdfBytes = await strippedPdf.save();

            // Generate filename
            const originalName = currentFile.name;
            const baseName = originalName.replace(/\.pdf$/i, '');
            const newName = `${baseName}_stripped.pdf`;

            // Download
            const blob = new Blob([pdfBytes], { type: 'application/pdf' });
            const url = URL.createObjectURL(blob);
            const a = document.createElement('a');
            a.href = url;
            a.download = newName;
            a.click();
            URL.revokeObjectURL(url);

            showMessage(`Successfully stripped metadata! Downloaded as "${newName}"`, 'success');

        } catch (err) {
            console.error(err);
            showMessage(`Failed to process PDF: ${err.message}`, 'error');
        } finally {
            loadingOverlay.classList.remove('visible');
        }
    }

    function clearFile() {
        currentFile = null;
        currentPdfDoc = null;
        fileInput.value = '';
        fileInfo.classList.remove('visible');
        metadataGrid.innerHTML = '';
        btnStrip.disabled = true;
        btnClear.disabled = true;
        clearMessage();
    }

    // Event listeners
    dropZone.addEventListener('click', () => fileInput.click());

    dropZone.addEventListener('dragover', (e) => {
        e.preventDefault();
        dropZone.classList.add('dragover');
    });

    dropZone.addEventListener('dragleave', () => {
        dropZone.classList.remove('dragover');
    });

    dropZone.addEventListener('drop', (e) => {
        e.preventDefault();
        dropZone.classList.remove('dragover');

        const files = e.dataTransfer.files;
        if (files.length > 0) {
            loadPdf(files[0]);
        }
    });

    fileInput.addEventListener('change', (e) => {
        if (e.target.files.length > 0) {
            loadPdf(e.target.files[0]);
        }
    });

    btnStrip.addEventListener('click', stripAndDownload);
    btnClear.addEventListener('click', clearFile);
});
    </script>
</body>
</html>