The document is finished. It's a PDF, it's on your screen, and the only thing between you and sending it is the signature line. So the ritual begins: print the file, sign it, and — since hardly anyone owns a scanner anymore — photograph it on a desk under bad lighting, crop it crookedly, and attach the blurry result. The clean document you had an hour ago is now a skewed photo of itself.
None of that is necessary. A signature on a page is just ink in a place, and Sign PDF puts it there without the printer: you create a signature once, drag it into position, and download the signed file. The whole thing runs in your browser, which means the unsigned contract never leaves your machine.
The ritual we're replacing
Print-sign-scan deserves to die for reasons beyond laziness. It costs a round trip through hardware you may not have, at a quality you can't control. Every step degrades the document: the print loses the crispness of the original, the scan or photo adds skew and shadows, and the file that finally gets sent is a worse artifact than the one you started with — often several times the size, too.
There's also the failure mode nobody plans for: the printer is out of ink, the office scanner is on another floor, or you're somewhere with neither. A signature that depends on hardware is a signature you can't always produce. One that happens in the browser works wherever the PDF already is — which is the one place you can guarantee it will be.
How to sign a PDF
- Open Sign PDF and drag in your document — up to 100 MB.
- Create your signature: draw it with your mouse or finger, type your name in a handwritten-style font, or upload an image of your signature.
- Drag the signature into position and use the size slider to get it right.
- Download the signed PDF.
The whole process takes under a minute, and it works the same on a laptop and a phone — drawing with a finger on a touchscreen is, if anything, more natural than drawing with a mouse. On a tablet with a stylus it's the closest thing to actually signing.
Three ways to create your signature
Draw it. With your mouse, finger, or a stylus. This is the version that's actually yours — the loops and slants of your own hand, reproduced on the page. It takes one attempt to make and looks like a signature, not a font.
Type it. Your name rendered in a handwritten-style font. It's the fastest option, and it comes out identical every single time — useful when you're signing a stack of similar documents and want consistency rather than personality.
Upload it. Photograph or scan your signature once — decent light, plain paper, a clean background — and reuse the image forever. This produces the best-looking result if you spend five minutes on the setup, and after that one-time cost it's the fastest path to a signature that genuinely looks signed.
Placing the signature where it belongs
Placement is deliberately simple: drag the signature anywhere on the page, and use the size slider to resize it before you commit. A signature sized like the surrounding text looks natural; one sized like a rubber stamp looks like an afterthought.
Multi-page documents get a shortcut. Turn on "Add to every page" and your signature is placed in the same spot on every page — the pattern contracts use for initialing each sheet and receipts use for verification, without you positioning it twelve times by hand.
Is this a legally binding signature?
Here's the honest answer, and it's the same one the tool itself gives: no. This adds a visual signature image to your PDF — it isn't a certified, legally binding e-signature under eIDAS or the U.S. ESIGN Act, and there's no audit trail or certificate. For contracts that require legal certification, use a dedicated e-signature service.
That disclosure isn't a defect — it's the difference between two different jobs. A visual signature is the right tool when a document needs to look signed: internal approvals, cover letters, forms where appearance is the point. A certified e-signature service is the right tool when a signature needs to prove something — who signed, when, and that nothing changed since. Knowing which job you're doing is most of the decision.
Visual signatures vs digital certificates
The "real thing" people usually mean when they ask about legal weight is a digital-certificate signature: cryptography embedded in the file that can verify the signer's identity and detect any later modification. It comes with the audit trail and certificate this tool pointedly doesn't attach — because attaching them would imply a guarantee that isn't being made.
If your use case needs that level of assurance — regulated agreements, anything that might one day be disputed — use a service built for it. If your use case needs ink in a place, with no printer involved and no file uploaded anywhere, that's exactly what's on offer here.
The privacy angle worth noticing
Unsigned contracts, medical forms, employment paperwork — the documents that most often need a signature are also the documents you least want sitting on a third-party server. Browser-based signing means your file is read, modified, and saved by the page you have open, on your device. No upload, no stored copy, no retention policy to take on faith.
And once the document is signed, the related jobs are nearby: fill in any form fields first with PDF Forms, or lock the finished file before sending it on — the walkthrough is in How to Password-Protect a PDF.