How to Sign a PDF Without Adobe Acrobat

Signing a contract usually means one of two things. Either you print it, sign it, scan it and send back a crooked photograph, or you hand the document to a service that keeps a copy on its servers. Neither is necessary for most agreements.

What an electronic signature is, and what it is not

An electronic signature is a mark you apply with intent to sign. Under the ESIGN Act and UETA that is enough for most agreements between businesses and individuals in the United States. The mark itself carries no magic: what matters is that you meant to sign and agreed to do it electronically.

It is not the same thing as a certificate-based signature, which binds a signature to a verified identity through a certificate authority and lets a reader detect changes made after signing. Some documents specifically ask for one. Most do not, and a document that does will say so.

If the document names a required signature method, read that clause before choosing a tool.

Type, draw or upload your signature

Type it. Enter your name and pick a handwriting style. Fast, consistent, and the same on every machine because the faces are part of the site rather than borrowed from your operating system.

Draw it. A finger on a phone gives a better result than a mouse, and both work. The stroke thins as you move faster, so it reads as a pen rather than a polygon.

Upload a photo. Sign a blank sheet, photograph it, and drop the image in. The white paper is removed by brightness, so the signature sits on the document instead of covering it with a pale rectangle.

Add initials, a date or a company stamp

A signature is rarely the only thing a document wants. Initials on every page, your printed name under the line, the date, a job title, a company stamp. All of them are placed the same way, and the ones that are text stay as real text in the finished file, so they can still be searched and selected.

Sign the same name in several places without retyping it

Agreements repeat. A company name appears in the preamble, again in the signature block, again on the exhibit. Every word you place is listed beside the document, and editing it there changes it everywhere it appears. Correcting a misspelled name late in the job is one edit, not six.

For a field that belongs in the same spot on every page, initials being the usual case, place it once and choose every page. Those copies stay linked by position, so moving one moves them all.

Signing a scanned or rotated contract

Scanned pages often carry a rotation flag. The page was fed into the scanner sideways and the flag turns it upright for the reader. Software that ignores the flag writes the signature into the page's own coordinate system, and it comes out on its side.

A signature is placed here in the space you are looking at, so it appears where you put it whatever the page is carrying. Nothing to check and nothing to work around, but worth knowing, because it is the most common way a signed scan comes back wrong.

What to check before you send a signed PDF

• Look at the whole page, not the signature. A mark in the right place on the wrong page is easy to do and hard to spot.
• If the document already had fillable fields and you typed into them, lock them, or the person receiving it can still edit the answers.
• Check any date you typed by hand. A date field left on today's date is a common error on a document that was agreed last week.