How to eSign Documents Online: The Complete Beginner’s Guide

Signing a document used to mean printing, scanning, faxing or mailing. In 2025? You can do it in under 30 seconds, with zero downloads, no printing and full legal compliance.

Here’s everything you need to know about how to eSign documents online, and why thousands of professionals are switching to Sizle to do it faster, smarter and free of clutter.

What is an eSignature?

An online signature, also called an eSignature, eSign or digital signature, is a legally binding way to sign a document using your computer, phone, or tablet.

How to do an eSignature

1. Type your name
2. Draw your signature
3. Upload a scan
4. Or use a secure certificate to cryptographically sign the doc

All of these methods are valid in most countries and business contexts. What matters is intent, integrity, and auditability, and that’s where most platforms get it wrong.

The problem with traditional tools

Let’s be blunt, most signature tools are outdated, bloated and expensive.

• Dozens of confusing options
• Required logins for both sender and viewer
• Monthly fees just to send documents
• Poor mobile experiences
• Zero insight into who viewed or opened the document

The worst part? You don’t know whether someone even saw your document.

How Sizle makes it instant

Sizle strips out the complexity.

Here’s how to sign a document online with Sizle:

1. Upload your document (PDF, Word, PowerPoint, etc.)
2. Add a signature field (drag and drop)
3. Generate a secure share link
4. Send it via email, chat, or embed it anywhere
5. The viewer signs without an account
6. You get instant notification and a signed copy

That’s it.

Smarter signatures

With Sizle, you’re not just signing, you’re capturing insight:

• Downloadable signed copy for peace of mind
• Viewer analytics to know who opened, when, and which pages they viewed
• Engagement insights to see where they dropped off
• Lead capture to collect name and email before they sign
• Lead enrichment with IP, timestamp and device info

Is it secure?

Yes. Sizle’s digital signatures are legally binding and encrypted. Every signed doc includes:- A detailed audit trail- Time and date stamp- Signer IP- Device and browser fingerprint- Optional access controls

It’s more secure than pen and paper, and 10x faster.

Who is it for?

• Freelancers and consultants
• Legal and HR teams
• Sales professionals
• Remote workers
• Startup founders

If you send documents, Sizle makes sure they get signed, fast.

Try it now

Ready to sign your first doc online?