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How to Add Electronic Signatures to Documents — Complete Guide

By DocFila Team · February 13, 2026 · 5 min read

Printing a document, signing it by hand, scanning it back, and emailing it is a workflow straight out of 2005. Electronic signatures are recognized in many countries and let you sign documents from anywhere, on any device. This guide covers everything you need to know about e-signatures: legality, types, how to create them, and when to use them. It is general information, not legal advice.

Are Electronic Signatures Legal?

Yes. Electronic signatures are legally recognized and enforceable in most countries worldwide. Key legislation includes:

United States — ESIGN Act (2000)

The Electronic Signatures in Global and National Commerce Act provides that a signature, contract or record relating to interstate or foreign commerce may not be denied legal effect, validity or enforceability solely because it is in electronic form. The Uniform Electronic Transactions Act (UETA), adopted by 49 states, complements the ESIGN Act at the state level.

European Union — eIDAS Regulation (2014)

The eIDAS regulation defines three levels of electronic signatures:

• Simple Electronic Signature (SES): Any electronic data attached to or associated with a document — for example, a typed name, drawn signature, or checkbox. Valid for most everyday contracts.
• Advanced Electronic Signature (AES): Uniquely linked to the signer, capable of identifying the signer, and created using data under the signer's sole control. Offers stronger legal standing.
• Qualified Electronic Signature (QES): Created with a qualified certificate issued by a trusted provider. Has the highest legal equivalence to a handwritten signature and is recognized across all EU member states.

Other Countries

The United Kingdom (Electronic Communications Act 2000), Canada (PIPEDA), Australia (Electronic Transactions Act 1999), India (IT Act 2000), and most of Asia, Africa, and Latin America recognize electronic signatures in some form. Always check specific regulations for high-stakes documents like real estate transfers or court filings, which may require notarization or qualified signatures.

Electronic Signature vs. Digital Signature

These terms are often used interchangeably, but they mean different things:

• Electronic signature: A broad category covering any electronic indication of intent to sign — a drawn signature, typed name, click-to-agree, or even an email.
• Digital signature: A specific type of electronic signature that uses cryptographic technology (PKI — Public Key Infrastructure) to verify the signer's identity and ensure the document has not been altered after signing.

For most business documents — NDAs, contracts, freelancer agreements, offer letters — a simple or advanced electronic signature is sufficient. Digital signatures with PKI are typically required for government submissions, regulated industries, and high-value transactions.

How to Sign Documents With DocFila

DocFila's E-Signature tool makes signing documents effortless. DocFila's own signature is a standard electronic signature under ESIGN/UETA and a simple electronic signature (SES) under eIDAS — not an advanced (AES) or qualified (QES) signature. Here is how:

Step 1 — Open Your Document

Import the PDF, Word document, or scanned file you need to sign. You can import from your device, email attachments, or cloud storage services.

Step 2 — Tap the Signature Tool

Select the signature icon in the editing toolbar. DocFila offers three ways to create your signature:

• Draw: Use your finger or Apple Pencil/stylus to draw your signature on the screen.
• Type: Type your name and choose from several handwriting-style fonts.
• Upload: Import a photo of your handwritten signature. DocFila automatically removes the background.

Step 3 — Place Your Signature

Drag and drop the signature onto the document. Pinch to resize and reposition until it fits the signature line. You can add multiple signatures to different pages if needed.

Step 4 — Add Date, Initials, or Text

Most signed documents also need a date and sometimes initials on each page. Use DocFila's annotation tools to add these elements.

Step 5 — Save and Share

Tap "Done" to flatten the signature into the document. The signed PDF can be shared via email, messaging apps, or cloud storage. DocFila saves your signature so you can reuse it on future documents.

Business Use Cases for E-Signatures

Electronic signatures have become essential across industries:

• Employment: Offer letters, NDAs, non-compete agreements, onboarding forms
• Real estate: Lease agreements, rental applications, property disclosures
• Sales: Proposals, service agreements, purchase orders
• Freelancing: Client contracts, statements of work, invoices
• Healthcare: Consent forms, patient intake, insurance authorizations
• Legal: Settlement agreements, power of attorney, affidavits (where permitted)

Learn more about creating contracts with DocFila's Contract Templates.

Security Best Practices

Protect yourself when signing and sending documents electronically:

1. Verify the sender. Only sign documents received from trusted sources. Be cautious with unexpected email attachments.
2. Read before signing. It sounds obvious, but always read the full document — including fine print and appendices.
3. Keep copies. Always save a signed copy for your records. You can keep documents in the Secure Vault, behind a PIN and biometric lock; mark an item Encrypted to encrypt it on your device first.
4. Use secure sharing methods. Avoid sending signed contracts via unencrypted channels when possible.
5. Timestamp your signature. A timestamp proves when the document was signed, which can be critical in disputes.

Start Signing Documents Today