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Digital Signature Pad Tool - Handwriting Signature Creator with PDF Signing

First Published: 2026-04-03
Last Updated: 2026-04-03

This tool lets you create professional handwriting signatures directly in your browser. Draw freehand with realistic pen styles (fountain pen, calligraphy, marker) that simulate natural ink flow and pressure variation, or type your name and render it in elegant script fonts. Export your signature as transparent PNG, vector SVG, or JPEG. You can also sign PDF documents by placing your signature on any page and downloading the signed PDF.

Features

• Draw Signature: Freehand drawing with mouse, touch, or stylus using Pointer Events API for unified input handling.
• Realistic Pen Styles: Four pen simulation modes (Ballpoint, Fountain Pen, Calligraphy, Marker) with velocity-based and pressure-sensitive line width variation for natural-looking ink strokes.
• Smooth Bezier Curves: Quadratic bezier curve interpolation for smooth, professional-looking handwriting instead of jagged line segments.
• Type Signature: Generate signatures from typed text with script fonts, adjustable size, italic toggle, and slant angle for a customized look.
• Multiple Export Formats: Download as transparent PNG (for document overlays), vector SVG (for infinite scaling), or JPEG with white background.
• Smart Cropping: Exported images are automatically cropped to the signature bounds with padding, eliminating unnecessary whitespace.
• PDF Signing: Upload a PDF, preview pages, position your signature by dragging or entering coordinates, adjust size, and download the signed PDF.
• Undo/Redo: Full stroke-level undo/redo with keyboard shortcuts (Ctrl+Z / Ctrl+Y).
• Signature Storage: Save up to 10 signatures in browser localStorage for reuse across sessions.
• Guide Line: Optional dashed guide line for consistent signature baseline alignment.
• High-DPI Support: Canvas rendering respects devicePixelRatio for sharp signatures on Retina and high-DPI displays.
• Complete Privacy: All processing happens in your browser. Your signature and PDF documents are never transmitted to any server.

How to Use

1. Draw a Signature: Select the "Draw Signature" tab. Choose a pen style and ink color. Draw your signature on the canvas using mouse, finger, or stylus.
2. Type a Signature: Select the "Type Signature" tab. Enter your name, choose a script font style, and adjust size, slant, and italic settings.
3. Export: Click "Download PNG" for a transparent signature image, "Download SVG" for a scalable vector format, or "Download JPEG" for a white-background image.
4. Save for Later: Click "Save Current Signature" to store it in your browser. Load or delete saved signatures from the saved signatures panel.
5. Sign a PDF: Switch to the "Sign PDF" tab. Upload a PDF file, navigate to the target page, drag to position your signature (or enter X/Y coordinates), adjust the size slider, click "Apply Signature to This Page", then "Download Signed PDF".

Important Notes

• This tool creates visual signature images only. It does not generate cryptographically signed documents or legally binding electronic signatures compliant with eIDAS, ESIGN Act, or similar regulations.
• Stylus pressure sensitivity requires a device that supports Pointer Events pressure (e.g., Apple Pencil, Wacom). On devices without pressure support, velocity-based simulation is used instead.
• Typed signature font availability depends on fonts installed on your system. The tool provides CSS font-family fallbacks for cross-platform compatibility.
• SVG export is only available for drawn (not typed) signatures. Typed signatures export as PNG when SVG is selected.
• Saved signatures are stored in your browser's localStorage. Clearing browser data will remove them.
• For best results with PDF signing, create your signature first (in Draw or Type tab) before switching to the Sign PDF tab.