Sign a PDF Online for Free
Draw your signature directly on any PDF page using your mouse or touchscreen — no cloud uploads, no registration.
Open PDF Editor →How It Works
- 1
Open the PDF Editor
Navigate to the editor at pdfeditor.lumicore-labs.com/editor. No account is required.
- 2
Upload the Document to Sign
Drag your PDF onto the canvas or use the file picker. Your document never leaves your browser's memory.
- 3
Open the Signature Tool
Click the Signature tool in the left toolbar. Draw your signature on the pad, or upload a PNG signature image.
- 4
Place and Resize Your Signature
Drag the signature to the correct position on the PDF page and resize it as needed.
- 5
Download the Signed PDF
Click Save to download the signed PDF directly to your device.
About This Tool
Signing a PDF shouldn't require a subscription, an account, or handing your document to a third-party cloud. With LumiCore PDF Editor, you can place a handwritten electronic signature on any PDF page in under a minute — completely free and entirely within your browser.
Use the Signature tool in the sidebar to open the signature pad. Draw your signature with your mouse, trackpad, or finger on a touchscreen device. Prefer an image? Upload a PNG of your handwritten signature instead. Once placed, you can resize and reposition the signature to sit exactly where the document requires it.
Because all processing is client-side, your signed document never touches a remote server. This is especially important for sensitive legal agreements, NDA documents, rental contracts, or medical consent forms where confidentiality is critical. No registration is needed, and the resulting PDF is downloaded directly to your device the moment you click Save. Fast, secure, and genuinely free.
Ready to get started? No sign-up, no downloads, no cost.
Open PDF Editor for Free →