How to Create an Electronic Signature Online for Free
Draw an electronic signature with your mouse or touchscreen and download it as a transparent PNG. Free, private, and no scanner or account needed.
What Is an Electronic Signature Image?
An electronic signature image is a visual copy of your handwritten signature that you can place in a document. With The PDF Gen, you draw on a browser canvas and download the result as a transparent PNG. It is useful for routine approvals, letters, invoices, and forms that accept an inserted signature image. The tool does not issue a certificate or cryptographically verify your identity.
What You Need Before You Start
- A mouse, trackpad, stylus, or touchscreen
- A modern browser with JavaScript enabled
- Permission to sign the document where you plan to use the image
- A document editor that can insert PNG images
How to Create an Electronic Signature Online
- Open the free Signature Maker from this guide.
- Choose a pen color that will remain readable on your document.
- Adjust the stroke width; a thinner line usually looks more natural for a full signature.
- Draw inside the canvas with your mouse, trackpad, stylus, or finger.
- Use Clear and redraw until the signature is legible and balanced.
- Select Download Signature to save a transparent PNG to your device.
Tips for a Natural-Looking Result
On a phone or tablet, rotate the device to landscape mode so you have more room to write. On a computer, move the pointer slowly and use a slightly thinner stroke. Leave a little space around the signature so it is easier to resize later. If the line looks shaky, clear the canvas and try a stylus or touchscreen instead of a trackpad.
Why the Transparent PNG Matters
The downloaded image has no white rectangle behind the signature. That lets the document background show through when you place the PNG over a signature line. Resize it proportionally so the writing is not stretched, and keep the original file in a secure location if you expect to reuse it.
How to Add the Signature to a Document
- Microsoft Word: use Insert, choose Pictures, select the PNG, and resize it above the signature line.
- Google Docs: choose Insert, Image, Upload from computer, then position and resize the PNG.
- PDF editors: use the editor's image or stamp tool to place the PNG on the correct page.
- Invoices: insert the PNG near the approval or authorized-signature field before exporting the final PDF.
Electronic Signature vs. Digital Signature
These terms are often used interchangeably, but they are not identical. An electronic signature can be a drawn name, typed name, checkbox, or signature image used to show intent. A certificate-based digital signature uses cryptography to help verify the signer and detect later document changes. This tool creates an electronic signature image; it does not create a certificate-based digital signature.
Privacy and Safe Use
The drawing is created on your device and exported by your browser. The PDF Gen does not upload the signature image for processing. Treat the downloaded PNG like a scan of your handwritten signature: store it securely, share it only with trusted recipients, and confirm that an image-based signature is appropriate for the document and jurisdiction involved.
When Should You Use It?
A signature PNG is convenient for low-risk approvals, internal forms, invoices, letters, and documents that explicitly accept an inserted signature image. For regulated, high-value, or identity-sensitive agreements, use the signing method required by the recipient or a service that provides identity verification, an audit trail, and certificate-based signing.