A PDF signature tool lets you draw, type, or upload a signature and place it on a rendered PDF preview by clicking — no coordinate guessing required. Everything runs in your browser with no file uploads.
Visual signature only — not cryptographically binding. For legally binding electronic signatures, use Adobe Sign, DocuSign, or HelloSign.
Step 1: Create Your Signature
Draw your signature with your mouse or touchscreen:
Step 2: Upload PDF
How to Add a Signature to a PDF
This PDF signature tool renders your PDF page in a canvas preview so you can click exactly where you want the signature to go — no manual coordinate entry needed. Your signature is embedded as an image using pdf-lib and downloaded as a new PDF.
Step 1: Create Your Signature
Choose from three methods. Draw: Use your mouse or touchscreen to draw your signature on the small canvas pad. Type: Enter your name and pick a cursive font style — it renders as a signature image. Upload: Select an existing PNG or JPG signature image (white or transparent background works best).
Step 2: Upload Your PDF
Click or drag your PDF file into the upload zone. The PDF.js library renders the current page in your browser — no server involved. The full visual preview appears immediately so you can judge placement visually.
Step 3: Click to Place and Resize
Once the PDF preview is showing, click on the exact spot where you want the signature. A semi-transparent preview appears at that position. Use the size slider above the preview to adjust the width (height scales proportionally). Drag the signature to reposition it. Navigate between pages with Previous/Next. When satisfied, click "Download Signed PDF" to embed the signature using pdf-lib's embedPng() and drawImage().
About Legal Validity
A visual signature placed this way is equivalent to typing your name in a document — it shows intent but provides no cryptographic verification. For contracts, legal agreements, or any document requiring tamper-evident proof of signing, use a certified e-signature service with an audit trail.
FAQ
Is this tool free?
Yes — PDF Signature is completely free with no account or signup required. Everything runs in your browser.
Is my PDF data private?
Yes. Your files never leave your device. All processing happens locally in your browser using JavaScript. Nothing is uploaded to a server.
Is this a legally binding digital signature?
No — this tool adds a visual signature image to the PDF page. It is not a cryptographic digital signature and is not legally binding. For legally binding electronic signatures, use Adobe Sign, DocuSign, HelloSign, or a similar e-signature platform that creates an audit trail.
What is the difference between a visual signature and a digital signature?
A visual signature is an image (drawing, typed name, or photo) placed on the PDF page. A digital signature is a cryptographic certificate that verifies identity and detects any changes after signing. This tool creates visual signatures only.
Can I sign multiple pages?
You can place one signature at a time. After downloading the signed PDF, you can re-upload it and add a signature to another page. For placing signatures on multiple pages simultaneously, use a dedicated e-signature platform.
What signature styles can I use?
Three methods are available: Draw (freehand on a canvas with your mouse or touchscreen), Type (enter your name and it renders in a cursive font), and Upload (use an existing PNG or JPG signature image).