Add digital signatures, handwritten e-signatures, and custom date stamps to PDF documents online for free. 100% client-side privacy guarantee on RiazHub.com.
Add Signature to PDF
Client-side PDF signing utility tailored for RiazHub.com
Drag & Drop your PDF file here
or click to browse from your device (Supports .PDF files up to 50MB)
Security, Privacy & Legal Validity
🔒 100% In-Browser Confidentiality Guarantee
Your privacy is strictly protected. This utility operates entirely using client-side WebAssembly and JavaScript libraries (pdf-lib and PDF.js). Your PDF files, contracts, identity documents, and handwritten signature images are never transmitted or saved to RiazHub.com or any third-party server.
🖋️ e-Signatures vs. Cryptographic Digital Signatures
This tool appends visual electronic signatures (e-Sign), date badges, and stamps directly onto the PDF canvas layers. Electronic signatures are legally binding under the US ESIGN Act, EU eIDAS regulations, and international commercial frameworks for standard agreements, receipts, invoices, and consent forms.
📋 Best Practices for Signing Documents
- Ensure high-contrast signature ink (Black or Royal Blue) for clean visibility.
- Use transparent PNG uploads for physical signature scans or company seals.
- Use the "Apply on All Pages" option if you need to initial every page of a multi-page contract.