The basic steps for signing a document online

To sign a document online, you need three things: the document itself (usually a PDF), a way to add your signature, and a platform that records what you signed and when. The simplest route is to use software you already have — most computers come with free tools that let you type, draw, or insert a signature image into a PDF. If you need the signature to be legally binding or you're signing something important, you'll use a dedicated service like DocuSign, Adobe Sign, or HelloSign that creates a record proving you signed it.

The actual process takes minutes. You upload or open the document, click where your signature goes, choose how your signature will look (typed text, a drawn signature, or an image of your handwritten signature), confirm it, and read the signed copy. Some services send it directly to the other person instead. The document stays on your computer or in the service's system as proof you signed it.

Key Takeaways

  • Free tools like Preview on Mac or Microsoft Edge on Windows let you sign PDFs without paying for a service, though they don't create a legal record of when you signed.
  • DocuSign, Adobe Sign, and HelloSign create timestamped records that prove you signed a document on a specific date, which matters for contracts and official paperwork.
  • Your signature can be typed text, a drawing made with your mouse or trackpad, or an image of your actual handwritten signature uploaded from your phone or scanner.
  • Most online signing services let you sign on your phone, tablet, or computer, and they work with documents sent to you by email or links you create yourself.

Signing with tools you already have

If you just need to add your signature to a document and don't need a legal record of when you signed it, your computer's built-in software works fine. On a Mac, open the PDF in Preview, click the Markup button (it looks like a toolbox), then choose Signature. You can draw your signature with your trackpad, use your iPhone's camera to photograph a handwritten signature, or type your name. Click where you want it to appear and save the file.

On Windows, open the PDF in Microsoft Edge, click the Draw button at the top, choose a pen tool, and draw your signature directly on the document. You can also use Microsoft Word — insert the PDF as an object, then use the Draw tab to add your signature. These methods are free and when ready, but they don't create a timestamped record that proves you signed on a particular date. Use them for documents you're signing for yourself, informal agreements, or anything where you don't need legal proof of when you signed.

Using a dedicated signing service for important documents

When you're signing a contract, a lease, a mortgage document, or anything that might end up in court, use a service that creates a record. DocuSign is the most common — you upload the document, mark where signatures go, add the other person's email address, and DocuSign sends them a link. When they sign, the service records the date, time, and IP address. Both of you get a copy with a certificate of completion attached.

Adobe Sign works the same way and integrates with Adobe's other tools if you already use them. HelloSign (now Dropbox Sign) is simpler and cheaper if you only sign a few documents per month. All three let you sign on your phone by drawing your signature on the screen, typing your name, or uploading an image of your handwritten signature. The service stores a copy and sends you a PDF you can read and keep.

These services cost money — DocuSign starts at about $15 per month for individuals, Adobe Sign at $10 per month, and HelloSign at $10 per month. Some let you sign one document free to try them out. If you sign documents rarely, the free tier might be enough; if you sign several per month, a paid plan saves you money compared to paying per document.

How to add your signature to the document

Most services give you the same choices for what your signature looks like. You can type your name in a signature font, which looks like cursive but is just text. You can draw your signature with your mouse, trackpad, or finger on a touchscreen — this takes a few tries to look natural, but it's the closest to a real signature. You can also photograph or scan your actual handwritten signature and upload it as an image, then place that image on the document.

The drawn signature usually looks most authentic. If you're using a mouse or trackpad, practice a few times in the preview window before you place it on the actual document. On a phone or tablet, drawing with your finger is much easier and usually looks better. Once you've placed your signature, most services let you move it, resize it, or delete it and try again before you finalize the document.

What happens after you sign

With a free tool like Preview or Edge, you save the signed document to your computer. It's now a regular PDF with your signature on it. You can email it, print it, or store it however you normally would. There's no record that you signed it on a particular date — it's just a file with your signature image on it.

With a paid service, the company stores a copy and sends you a copy. The stored version includes a certificate showing the date you signed, your email address, and sometimes your IP address. This record is what makes the signature legally binding in most situations. You can read the PDF to your computer, but the real proof of when you signed lives in the service's system. If someone later claims you didn't sign something, you can log back into the service and show the timestamped record.

Signing documents sent to you by someone else

When another person sends you a document to sign through a service like DocuSign or Adobe Sign, you'll get an email with a link. Click the link, and it opens the document in your browser. You'll see where you need to sign (usually marked with a box or your name). Click that spot, choose how your signature will look, and confirm. You don't need an account with the service — the sender's account handles everything. Once you sign, the document goes back to the sender, and you get a copy.

If someone sends you a PDF by email and asks you to sign it, you can sign it with your computer's built-in tools and send it back, or you can ask them to send it through a signing service instead. The signing service is better if the document is important or if multiple people need to sign it in order.

Common mistakes to avoid

Don't sign a document you haven't read. It takes an extra minute to scroll through and make sure you understand what you're agreeing to. Don't use a typed signature for something that requires a handwritten one — some legal documents specifically need your actual signature, not text. Check the instructions before you sign.

Don't assume a free tool creates a legal record. If you sign with Preview or Edge, there's no timestamped proof. For anything important, use a service that creates a certificate. Don't forget to read and save your copy after you sign — some services delete files after a certain time, and you'll want your own backup. Finally, don't sign with a service you don't recognize. Stick to the major ones: DocuSign, Adobe Sign, HelloSign, or your bank's own signing tool if they offer one.

Frequently Asked Questions

Is an online signature legally binding?

Yes, if it's created through a service that records the date and time you signed. A signature made with DocuSign, Adobe Sign, or HelloSign is legally binding in most situations. A signature you add with Preview or Edge is just an image on a PDF — it's not legally binding because there's no proof of when you signed it. For contracts and official documents, use a service that creates a timestamped record.

Can I sign a document on my phone?

Yes. Most signing services work on phones and tablets. You open the link or app, find where you need to sign, draw your signature with your finger, and confirm. Drawing on a phone screen usually looks better than drawing with a mouse, so phone signing is often easier. You can also photograph your handwritten signature and upload it from your phone.

What if I make a mistake while signing?

Most services let you delete your signature and try again before you finalize the document. Once you confirm and submit, you usually can't change it — that's part of what makes it legally binding. If you need to fix something after you've signed, you'll have to contact the other person and ask them to send you a new version to sign.

Do I need an account to sign a document someone sends me?

No. When someone sends you a document through DocuSign, Adobe Sign, or HelloSign, you click the link in the email and sign without creating an account. The sender's account handles it. You only need an account if you're the one sending documents for others to sign.

What's the difference between typing my name and drawing my signature?

A typed name is text in a signature font — it looks like cursive but it's just letters. A drawn signature is an image of your actual signature or a signature you create by drawing on the screen. A drawn signature looks more authentic and is usually preferred for important documents. A typed name is fine for informal documents or when you're signing something quickly.