Sign PDF — Free & Online

Draw your signature or upload an image. Place it anywhere on any PDF page — drag, resize, done.

🔒 Files stay on your device ✍️ Draw or upload signature ↔️ Drag & resize freely 📄 Full-size page view ⚡ Instant download

Drop your PDF here to sign it

Upload a PDF — draw or upload your signature — drag to position — download signed PDF

Sign with your mouse, trackpad, or finger
Color:
Size:

Click to upload signature image
PNG with transparent background works best

Placed Signatures
No signatures placed yet
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Click anywhere on the page to place your signature

How to Sign a PDF Online for Free

Four steps. No account. Completely free and private.

01

Upload Your PDF

Drag and drop your PDF onto the upload area or click Select PDF File. The PDF opens instantly at full size, ready to sign.

02

Create Your Signature

Switch to the Sign panel. Draw your signature using your mouse, trackpad, or finger. Or upload a photo or PNG of your existing signature.

03

Place & Adjust It

Click Place Signature, then click the PDF where you want it. Drag to reposition. Pull the resize handle to scale. Switch pages and add more signatures as needed.

04

Download the Signed PDF

Click Download Signed PDF. Your signatures are permanently embedded into the PDF — ready to send, email, or print.

Why Use QwikPDF to Sign a PDF?

The fastest, most private, and completely free way to sign any PDF.

Draw Your Signature

Sign naturally on a canvas using your mouse, trackpad, or touch. Choose from 4 ink colors and 3 pen sizes for a natural look.

Upload a Signature Image

Already have a signature scan or PNG? Upload it directly. PNG files with transparent backgrounds give the cleanest result on any PDF.

Full-Size Page View

The PDF renders at full resolution so you can see exactly where you're placing your signature — no tiny thumbnails, no guessing.

Drag & Resize to Position

After placing your signature, drag it to exactly the right spot. Use the resize handle to scale it to fit the signature line perfectly.

100% Private

Your PDF and signature never leave your browser. Everything is processed locally using pdf-lib — no server, no uploads, no data retention.

Multiple Signatures

Place signatures on multiple pages, add initials and a full signature, or sign on behalf of multiple parties — all in one session.

Frequently Asked Questions

Everything about signing PDF files online for free.

How do I sign a PDF online for free?
Upload your PDF, draw or upload your signature in the panel, click Place Signature, then click on the page where you want it. Drag it to perfect position, then click Download Signed PDF.
Is an electronically signed PDF legally valid?
Electronic signatures created by drawing or inserting an image are generally accepted for many everyday documents. For legally binding contracts that require certified digital signatures (like those under eIDAS or ESIGN), you may need a certified e-signature provider. Always check local requirements for high-stakes documents.
Can I upload an image of my signature?
Yes. Click the Upload Image tab in the signature panel, then click the upload area to choose a PNG or JPG from your device. For the cleanest result, use a PNG with a transparent background so the white paper doesn't show.
Are my PDF files uploaded to a server?
No. All processing happens entirely in your browser using JavaScript and pdf-lib. Your PDF and signature never leave your device, making it safe for confidential, legal, medical, and personal documents.
Can I sign multiple pages?
Yes. Navigate between pages using the arrow buttons in the toolbar, and place a signature on each page as needed. All signatures are collected and embedded when you download the final PDF.
How do I remove a placed signature?
Click the × button on the signature overlay on the page, or use the delete button next to the signature in the Placed Signatures list on the left panel. The original PDF is never modified until you click Download.

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