Free PDF Signature Tool | Add Signature to PDF Online

Add a visual signature to your PDF — draw, type, or upload.

Click or drag a PDF file

Your file stays in your browser — nothing is uploaded

Your files never leave your browser. All signing is done client-side — no server uploads, no data collection.

Common Use Cases for PDF Signature

Contract Signing: Add electronic signatures to contracts, agreements, and legal documents without printing and scanning.
Invoice Approval: Sign invoices, purchase orders, and financial documents digitally for faster processing.
Form Completion: Sign application forms, consent forms, and official documents directly in browser.
Remote Authorization: Provide signatures for approvals when working remotely or away from office.
Document Authentication: Add visual signatures to certify document review, approval, or acknowledgment.
Paperless Workflow: Eliminate printing, signing, and scanning steps to create fully digital document workflows.

Upload or drag-and-drop your PDF file into the tool.

Draw, type, or upload an image of your signature.

Position the signature on the page and download your signed PDF.

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Protect signed documents

Password protect any PDF — encrypt and set permissions, entirely in your browser.

Preview before signing

Open and view PDF files in your browser. Inspect metadata and document properties.

Combine signed documents

Merge multiple PDF files into a single document. Drag-and-drop to reorder.

Reduce file size after signing

Reduce PDF file size without losing quality. Adjust image resolution, quality, and more.