How to Sign a PDF Electronically — Free e-Signature Guide

How to Sign PDF Documents Online

No printer, no scanner, no problem. MyPDF's Sign PDF tool lets you add your electronic signature directly to any PDF in your browser.

3 Ways to Create Your Signature

Option 1: Draw Your Signature

Use your mouse, trackpad, or touchscreen to draw your signature. This produces the most natural-looking result.

Option 2: Type Your Signature

Type your name and choose from signature-style fonts. Quick and professional — ideal for formal documents.

Option 3: Upload a Signature Image

Already have your signature as an image? Upload a PNG or JPG of your signature (transparent background works best).

How to Sign a PDF

1. Upload your PDF to the Sign PDF tool
2. Create your signature using draw, type, or upload
3. Place the signature on the document — drag to position, resize as needed
4. Add date (optional) — include the signing date
5. Download the signed PDF

Electronic Signature vs Digital Signature

Feature	Electronic Signature	Digital Signature
What it is	Visual representation of your signature	Cryptographic certificate-based
Legal validity	Valid for most documents	Required for some legal/government docs
How it works	Image placed on PDF	Embedded certificate verifies identity
Setup	None — draw and place	Requires certificate authority
Cost	Free	Often paid

MyPDF provides electronic signatures, which are legally binding for most business documents in most jurisdictions (including under ESIGN Act in the US and eIDAS in the EU).

When to Use e-Signatures

• Contracts and agreements: Client contracts, vendor agreements
• HR documents: Offer letters, NDAs, onboarding forms
• Real estate: Lease agreements, disclosure forms
• Financial: Loan applications, account opening forms
• Education: Permission slips, enrollment forms
• Personal: Authorization letters, consent forms

Tips for Professional Signatures

1. Use a stylus on tablet: Produces the most natural signature
2. Practice first: Draw a few times before committing
3. Black ink: Black signatures are universally professional
4. Consistent size: Match the signature line size
5. Add initials: For multi-page documents, initial each page
6. Include date: Add the date next to your signature for legal clarity

Signing Multiple Documents

For a batch of documents:

1. Create your signature once — it's saved in the tool's session
2. Upload each PDF and place the same signature
3. Download all signed documents

After Signing

Next Step	Tool
Protect the signed PDF	Protect PDF
Flatten signatures (prevent editing)	Flatten PDF
Merge signed pages	Merge PDF
Send for countersignature	Share the signed PDF

Frequently Asked Questions

Are electronic signatures legally valid?

Yes, in most countries and for most documents. The US ESIGN Act, EU eIDAS regulation, and similar laws worldwide recognize electronic signatures as legally equivalent to handwritten ones for most purposes.

Can someone tamper with a signed PDF?

To prevent tampering after signing, use Flatten PDF to permanently embed the signature, and Protect PDF to restrict editing.

Can I sign a password-protected PDF?

Unlock it first with Unlock PDF, sign it, then re-protect if needed.

Is my signature stored on MyPDF's servers?

No. Signatures are processed in your browser session and never stored on our servers.

Related Tools

• Sign PDF — Add e-signatures to PDFs
• Flatten PDF — Lock signatures permanently
• Protect PDF — Add password protection
• Add Watermark — Add stamps or branding