How to Electronically Sign a PDF for Free
Signing a PDF used to mean printing it, signing with a pen, scanning it back in, and hoping the result was legible. It no longer has to: Sign PDF lets you draw or type your signature and drop it exactly where it belongs, then download the signed file — all in your browser, in under a minute.
This guide walks through creating a signature, placing and sizing it neatly, what "electronically signing" actually means for everyday agreements, and why doing it in the browser keeps a sensitive document private. It is general information, not legal advice.
Three ways to create your signature
Sign PDF gives you a few ways to produce a signature, so you can pick whichever looks right. You can draw it with a mouse, trackpad, or finger; a phone or tablet touchscreen gives by far the most natural line, close to signing on paper.
You can type your name and have it rendered in a handwriting-style script — the fastest option, and consistent every time, which many people prefer for routine forms. Or you can upload an image of your real pen-and-ink signature, photographed on white paper, if you want your genuine handwriting on the document.
Tip. Drawing with a mouse tends to look shaky. If the signature matters to you, draw it on a phone or tablet touchscreen, or type it in a signature style instead.
How to sign a PDF, step by step
The whole process runs in your browser and takes four steps:
- 1Open Sign PDF and add the document you need to sign.
- 2Create your signature — draw it, type your name in a signature style, or upload an image of your handwritten signature.
- 3Click the page where the signature goes, then drag a corner to resize it so it sits neatly on the line.
- 4Apply your signature and download the signed PDF.
Placing it neatly — and adding a date
A signature almost always looks better a little smaller than you first place it, so scale it down until it sits comfortably on the signature line rather than dominating it. Line the base of your signature up with the printed line and leave a touch of white space around it.
If the form also asks for the date or your initials, add those in the same pass. Keeping the signature, date, and initials aligned and modestly sized is what makes a signed PDF look deliberate rather than pasted on.
Tip. Zoom in before you place the signature. It is much easier to line it up precisely at 150–200% than at a whole-page view.
Are electronic signatures legally valid?
For most everyday agreements, yes. Electronic signatures are recognized across much of the world: in the United States the federal ESIGN Act and the state-level UETA give them legal effect, and in the European Union the eIDAS regulation does the same. What usually matters is that both parties intended to sign and agreed to the terms, and that there is a record of what was signed and when.
There are limits, and it pays to know them. eIDAS distinguishes simple, advanced, and qualified electronic signatures, and higher-stakes matters may call for an advanced or qualified signature, a witness, or a notary. A few document types — wills, some property transfers, and certain family-law papers — can still require wet ink in your jurisdiction.
A signature drawn or typed in Sign PDF is a simple electronic signature: well suited to approvals, internal forms, consent, and routine contracts, but not a substitute for notarization where that is required. This is general information, not legal advice — for anything high-stakes, check the rules that apply to your document or ask a qualified professional.
Tip. Keep the final signed PDF along with any covering email or message. A clear record of who agreed to what, and when, is often what makes an electronic signature hold up later.
Signing privately, then locking the file
Because Sign PDF runs entirely in your browser, the document — often a contract carrying names, addresses, or financial detail — never leaves your device and is never uploaded to a server. That is worth having for anything you would not want sitting on a third party's system.
Once you apply the signature it becomes part of the downloaded PDF, so keep your original unsigned copy if you might need to reposition it. And if you are emailing a signed contract, consider adding a password first with Protect PDF so that only the intended recipient can open it.