Is my PDF uploaded to a server when I sign it?

No. All signing and processing happens locally in your browser using pdf-lib and pdf.js. Your documents never leave your device, making it safe for contracts, legal forms and confidential files.

Can I upload an image of my signature?

Yes. Switch to the Image tab in the signature panel, then upload a PNG or JPG file of your existing signature. The tool automatically removes the white background from JPG signatures so only the ink shows on your document.

Can I place multiple signatures on a PDF?

Yes. You can place as many signatures as you need — on any page, in any position. Each one can be a different signature or the same one resized.

Sign PDF Online Free – Draw or Upload Signature

Drop a PDF here to sign it

Upload one or more PDFs — draw or upload your signature, place it on any page, then download

Signature

Create your signature, then click any page to place it

Upload Signature Image

PNG or JPG — white background is removed automatically

✓ Signature ready

Click any page thumbnail to place it

Size 80 pt

Opacity 100%

Signature selected

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Processing…

How to Sign a PDF Online for Free

Four simple steps. No account needed. Completely free.

Upload Your PDF

Drag and drop one or more PDF files onto the upload area or click Select PDF Files. Every page loads as a live canvas you can click directly on.

Create Your Signature

Use the Draw tab to sign with your mouse or finger on a touchscreen. Or use the Upload Image tab to use a PNG or JPG of your existing signature — white backgrounds are removed automatically.

Place & Adjust

Click Use This Signature then click anywhere on any page to place it. Drag it to reposition. Use the Size and Opacity sliders to adjust. Click Apply to All Pages to sign the entire document at once.

Download the Signed PDF

Click Download Signed PDF. Your signature is permanently embedded as a high-resolution image — clean, full quality, ready to share or print.

Why Sign PDFs with QwikPDF?

The fastest free way to add a real signature to any PDF document.

Draw with Mouse or Touch

The signature pad works perfectly on desktop with a mouse and on mobile and tablet with your finger or a stylus — giving you a natural, handwritten look.

Upload a Signature Image

Already have a scanned signature? Upload a PNG or JPG and QwikPDF automatically removes the white background so only the ink appears on your document.

Precise Placement & Sizing

Click any page to place your signature exactly where you want it. Drag it to reposition. Use the size slider to scale from a small initials mark to a large signature block.

100% Private

Your PDF files are never uploaded to any server. All signing, rendering and embedding happens locally in your browser using pdf-lib — safe for contracts and sensitive documents.

Frequently Asked Questions

Everything about signing PDF documents online for free.

How do I sign a PDF online for free?

Upload your PDF to QwikPDF Sign, draw your signature in the pad or upload a signature image, click Use This Signature, then click anywhere on a page to place it. Drag to reposition, adjust size if needed, and click Download Signed PDF.

Is my PDF uploaded to a server?

No. All processing happens entirely in your browser using pdf-lib and pdf.js. Your files never leave your device, making it completely safe for legal, medical and confidential documents.

Can I draw my signature on a phone or tablet?

Yes. The signature drawing pad fully supports touch input, so you can sign naturally with your finger on a phone or tablet, or with a stylus on a supported device.

How does white background removal work for uploaded images?

When you upload a JPG signature, QwikPDF renders it into a canvas and converts near-white pixels to transparent. This means only your ink appears on the PDF, not a white box around it. PNG files with transparency are used as-is.

Can I add the signature to every page at once?

Yes. Place a signature on one page, click it to select it, then click Apply to All Pages. The signature is duplicated at the same proportional position on every page of that PDF file.

Is a drawn signature legally binding?

In many countries, an electronic signature that represents your intent to sign is legally valid under laws such as eIDAS (EU), ESIGN (US) and similar regulations. However, for high-stakes legal matters, we recommend consulting a legal professional about the requirements in your jurisdiction.

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