---
layout: default
title: Sign PDF - Add Signatures to PDF Documents
description: Add drawn, typed, or image signatures to your PDF documents.
permalink: /playground/tools/sign-pdf/
---

<link rel="stylesheet" href="../shared/tool-layout.css">

<div class="tool-wrapper">
    <div class="tool-breadcrumb">
        <a href="/playground/tools/">← Back to Tools</a>
    </div>

    <div class="tool-header">
        <h1>Sign PDF</h1>
        <p class="tool-description">Add your signature to PDF documents</p>
    </div>

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

    <div class="tool-content">
        <div class="drop-zone" id="dropZone">
            <div class="drop-zone-icon">📄</div>
            <div class="drop-zone-text">Click to select a PDF or drag it here</div>
            <div class="drop-zone-hint">Single PDF file only</div>
        </div>
        <input type="file" id="fileInput" class="file-input" accept=".pdf,application/pdf">

        <div id="signatureCreator" style="display: none; margin-top: 2rem;">
            <h3>Create Signature</h3>

            <div style="display: flex; gap: 1rem; margin: 1rem 0; flex-wrap: wrap;">
                <button class="btn btn-secondary sig-type-btn active" data-type="draw">✍️ Draw</button>
                <button class="btn btn-secondary sig-type-btn" data-type="type">⌨️ Type</button>
                <button class="btn btn-secondary sig-type-btn" data-type="upload">📷 Upload</button>
            </div>

            <div id="drawSignature" style="border: 2px solid var(--tool-border); border-radius: 8px; background: white; margin-top: 1rem;">
                <canvas id="signatureCanvas" width="600" height="200" style="display: block; width: 100%; cursor: crosshair;"></canvas>
                <div style="padding: 0.5rem; text-align: right; border-top: 1px solid var(--tool-border);">
                    <button id="clearSignature" class="btn btn-secondary" style="font-size: 0.9rem; padding: 0.25rem 0.75rem;">Clear</button>
                </div>
            </div>

            <div id="typeSignature" style="display: none; margin-top: 1rem;">
                <input type="text" id="signatureText" placeholder="Type your name"
                       style="width: 100%; padding: 1rem; border: 2px solid var(--tool-border); border-radius: 8px; font-size: 1.5rem; font-family: 'Brush Script MT', cursive;">
            </div>

            <div id="uploadSignature" style="display: none; margin-top: 1rem;">
                <input type="file" id="signatureImage" accept="image/*"
                       style="padding: 0.5rem; border: 2px solid var(--tool-border); border-radius: 8px; width: 100%;">
                <div id="uploadPreview" style="margin-top: 1rem; text-align: center;"></div>
            </div>

            <button id="addSignatureBtn" class="btn btn-primary" style="margin-top: 1rem; width: 100%;">
                Add Signature to PDF
            </button>
        </div>

        <div id="pdfViewer" style="display: none; margin-top: 2rem;">
            <h3>PDF Document <span style="font-size: 0.9rem; color: var(--tool-text-secondary);">(Click to place signature)</span></h3>
            <div style="position: relative; border: 2px solid var(--tool-border); border-radius: 8px; margin-top: 1rem; background: #f5f5f5;">
                <canvas id="pdfCanvas" style="display: block; max-width: 100%; cursor: crosshair;"></canvas>
                <img id="signaturePreview" style="position: absolute; display: none; pointer-events: none; border: 2px dashed #0066cc; opacity: 0.8;">
            </div>
            <div style="display: flex; gap: 1rem; margin-top: 1rem; justify-content: center; flex-wrap: wrap;">
                <button id="prevPage" class="btn btn-secondary">← Previous</button>
                <span id="pageInfo" style="padding: 0.5rem 1rem; align-self: center;">Page 1 of 1</span>
                <button id="nextPage" class="btn btn-secondary">Next →</button>
            </div>
        </div>

        <div class="btn-group" style="margin-top: 2rem;">
            <button id="clearBtn" class="btn btn-secondary" style="display: none;">
                Clear All
            </button>
            <button id="downloadBtn" class="btn btn-success" style="display: none;">
                Download Signed PDF
            </button>
        </div>

        <div id="progressContainer" style="display: none; margin-top: 1.5rem;">
            <div style="font-weight: 600; margin-bottom: 0.5rem;">Processing...</div>
            <div class="progress-bar">
                <div id="progressFill" class="progress-fill"></div>
            </div>
            <div id="progressText" style="margin-top: 0.5rem; font-size: 0.9rem; color: var(--tool-text-secondary);"></div>
        </div>
    </div>

    <div class="feature-list">
        <h3>Features</h3>
        <ul>
            <li>Draw signature with mouse/touch</li>
            <li>Type signature with custom fonts</li>
            <li>Upload signature image</li>
            <li>Place signature anywhere on PDF</li>
            <li>Multi-page PDF support</li>
            <li>Visual signature only (not cryptographic)</li>
            <li>100% client-side processing</li>
            <li>No file uploads - complete privacy</li>
            <li>Works offline</li>
        </ul>

        <div style="margin-top: 1.5rem; padding: 1rem; border: 1px solid var(--tool-border); border-radius: 8px; background: var(--tool-bg-light);">
            <strong>Note:</strong> This adds a visual signature only. For legally binding digital signatures with certificates, use specialized software.
        </div>
    </div>
</div>

<script src="../shared/tool-utils.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/pdf.js/4.0.379/pdf.min.js"
        integrity="sha384-6RsW+O0eLDetuZS+cLGe0xW5GuwTWcIcCcJg/LCT6S3qLKBXXXxLYzIvEd3KNQxw"
        crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/pdf-lib/1.17.1/pdf-lib.min.js"
        integrity="sha384-TzqKflHZaLYKpKjLG7g3w8zkFSGdTqZB1wXU2/mKXPBqC8AE4V5GV76KxGqKGKGj"
        crossorigin="anonymous"></script>
<script src="tool.js"></script>