Secure Electronic Signature Tool (Offline & Free)
In the modern remote working era, printing, signing, and scanning documents is a hassle. The PDF Mechanic provides a free eSign PDF tool that allows you to add digital signatures to contracts, invoices, and forms directly in your browser. Unlike other services, we do not require you to create an account or pay a subscription fee.
Privacy-First: Sign PDF on Client-Side
Security is paramount when dealing with legal documents. Our tool operates with 100% client-side privacy. This means your PDF file and your signature image never leave your device. The processing happens locally using your browser's memory (WebAssembly). This makes it safe to sign confidential documents like NDAs, bank forms, and tax returns.
Draw Signature on Mobile & Desktop
You don't need a stylus or a special app. Our signature pad works perfectly on Android touchscreens, iPhones, and iPads. You can draw your signature using your finger, or if you are on a PC, use your mouse. Alternatively, if you have a scanned image of your signature (PNG/JPG), you can upload it and place it transparently on the document.
Legal Validity
Electronic signatures created here are suitable for most business and personal agreements. However, for highly regulated documents (like property deeds), always check your local laws regarding digital signatures.