About Sign PDF

Sign PDF was born out of a simple observation: most "online" tools are a privacy nightmare. When you need to sign a sensitive document—be it a medical form, a business contract, or a personal letter—you shouldn't have to upload it to a server you don't control.

Our Mission

Our mission is to provide the world with a high-quality, professional-grade PDF signing tool that is 100% private. By leveraging modern web technologies, we've built a platform where the "cloud" never sees your data. Everything—from rendering the PDF to applying the signature—happens inside your browser.

Why Choose Us?

• Zero Server Uploads: Your documents never leave your computer.
• No Registration: We don't want your email or your personal data. Just sign and go.
• Fast & Responsive: Since everything is local, there's no waiting for uploads or server processing.
• Completely Free: No subscriptions, no "pro" versions, no hidden fees.

Built for the Modern Web

We use React and Astro to deliver a lightning-fast experience. Our technical architecture is open and transparent, using Content Security Policies to prove our commitment to your security.