Is this a legally valid electronic signature?

In most day-to-day business use, yes — an electronic signature applied to a document you control. It is not a qualified digital certificate with a cryptographic seal; for that you want a signature with a certificate authority, and Verify Signature will not claim otherwise.

Can the signature be moved afterwards?

The mark is placed into the page like any other content. If you need it immovable, flatten the PDF afterwards so the signature becomes part of the page.

Should I upload a transparent PNG of my signature?

Yes. A JPG signature carries a white rectangle that will cover whatever is behind it.

Can I sign on a phone?

Yes — draw with your finger on the touchscreen, and the whole page layout is responsive.

Sign PDF

Draw, type or upload your signature and place it on the page.

Drag & drop the PDF to sign

or click to browse — .pdf · up to 1 files

This places your signature image on the page (an electronic signature). It is not a certified digital signature with a cryptographic certificate — viewers will show it as an image, and “Signed” status badges require a certification authority.

Add a PDF first.

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About Sign PDF

Sign a PDF by drawing your signature with a mouse or finger, typing one in a script face, or uploading an image of your real signature — then place it exactly where the document needs it and save the signed copy. Nothing is sent to a third-party signing service.

Signing a lease, an offer letter or a delivery note the same minute it arrives.

How to use Sign PDF in 3 steps

Drop the PDF that needs your signature.
Draw, type or upload your signature, then drag it onto the signature line.
Apply and download the signed document.

What you get with Sign PDF

Three ways in: draw, type, or upload a signature image
Place and resize the mark anywhere on any page
No signing-service account, and no copy of your document held elsewhere
Runs in your browser — the file is never uploaded
Free to use, with no signup and no account
No watermark or logo added to your output
Works on desktop and mobile, no install

Sign PDF: questions

Is this a legally valid electronic signature?: In most day-to-day business use, yes — an electronic signature applied to a document you control. It is not a qualified digital certificate with a cryptographic seal; for that you want a signature with a certificate authority, and Verify Signature will not claim otherwise.
Can the signature be moved afterwards?: The mark is placed into the page like any other content. If you need it immovable, flatten the PDF afterwards so the signature becomes part of the page.
Should I upload a transparent PNG of my signature?: Yes. A JPG signature carries a white rectangle that will cover whatever is behind it.
Can I sign on a phone?: Yes — draw with your finger on the touchscreen, and the whole page layout is responsive.