How to Sign a PDF Online — Step-by-Step Guide

Why Sign a PDF Online?

In the past, signing a PDF document required printing it, signing by hand, scanning the signed document, and sending it back. A cumbersome process that takes time, costs money, and creates organization and storage problems.

Today, with services like SignFlow, you can sign a PDF directly from your computer or phone — without printing a single page. The process is simple, fast, legally valid, and secure. Let's see how it works in practice.

5 Steps to Sign a PDF with SignFlow

Step 1: Free Registration

Create an account on SignFlow. Registration is free and takes less than a minute. No credit card needed and no software to download — everything works directly in your browser.

After registration you'll arrive at the Dashboard where you can manage all your documents.

Step 2: Upload the Document

Click "New Document" and upload your PDF file. SignFlow supports PDF, Word, and other formats. The system will automatically convert the file to a signing-ready format.

Tip: Make sure the document is final before uploading. Once signature fields are added and it is sent, the document is locked for changes — this is part of the security.

Step 3: Add Signature Fields

Drag signature fields to the correct location on the document. In addition to the signature, you can add other fields:

• Signature field: The place where the signer will sign.
• Date field: Automatically filled with the signing date.
• Text field: Full name, ID number, address.
• Approval field: A checkbox for specific clauses.
• Initials: For initialing pages.

If there are multiple signers, you can assign different fields to each signer and set a signing order.

Step 4: Define Signers and Send

Add the signers' details — name and email. You can add multiple signers and configure:

• Signing order: Whether everyone signs simultaneously or in a specific order.
• Automatic reminders: If someone hasn't signed, the system sends a reminder.
• Personal message: Add a message accompanying the document.
• Expiration date: Set a deadline for signing.

Click "Send" — and that's it! Signers will receive an email with a direct link to sign.

Step 5: Receive the Signed Document

Once all signers are done, everyone receives a copy of the complete signed document. The document includes:

• All signatures
• A complete audit trail — recording who signed, when, from which IP address, and from which device
• A digital security signature verifying the document was not altered

Tips for a Successful PDF Signature

• Prepare the document in advance: Make sure all content is final before sending for signature.
• Mark signature fields clearly: Clear fields = fewer questions from signers = faster process.
• Add a covering message: Explain to the signer what the document is and why they need to sign.
• Enable reminders: People are busy — a gentle reminder helps.
• Use templates: If you send similar documents frequently, create a template and save time.

For more tips, read our article on 10 Tips for Successful Electronic Signatures.

PDF Signing Tools Comparison

There are several tools that allow PDF signing. Here is a quick comparison:

For a more detailed comparison, read our article on SignFlow vs DocuSign.

Signing from Your Phone

One of SignFlow's biggest advantages is that signers don't need to download anything. The link sent by email opens directly in the phone's browser, and signing takes place in a convenient and simple interface. This is especially important because many people read emails and handle documents from their phones.

Frequently Asked Questions