Adding a digital signature to a PDF is the fastest way to sign documents electronically — without DocuSign, Adobe Sign, or any paid service.
For most people, "digital signature" means a handwritten-style mark drawn with a mouse or finger. This is technically an "electronic signature" and is legally valid for most contracts.
Go to pdfeditor.onl/sign-pdf. No account, no subscription, no software installation.
Draw your signature using a mouse, trackpad, or touchscreen. Or type your name in a handwriting font. Or upload a PNG image of your physical signature.
Tip: The canvas supports variable line width — press harder with a stylus for thicker strokes, lighter for thin ones.
Drag the signature to the signature field on any page. Resize to fit. Click Download Signed PDF.
Not technically. An electronic signature is a visual mark. A digital signature uses cryptographic keys from a Certificate Authority. For most everyday contracts, an electronic signature is sufficient and legally valid.
Yes. The tool works fully on iPhone (Safari) and Android (Chrome).
Yes — completely free at pdfeditor.onl/sign-pdf.