How do I sign a PDF document?

Upload your PDF, click where you want to add your signature, create or upload your signature, position it, and download the signed document.

Are electronic signatures legally valid?

Yes, electronic signatures created with PDFly are legally binding and compliant with e-signature laws in most countries, including the US ESIGN Act and EU eIDAS regulation.

What types of signatures can I create?

You can draw your signature with a mouse or touchscreen, type your name in various fonts, or upload an image of your handwritten signature.

Can I add multiple signatures to one document?

Yes, you can add multiple signatures, initials, dates, and text fields to the same PDF document as needed.

How secure are the signed documents?

All signatures are encrypted and tamper-evident. Any changes to the document after signing will be detected and flagged.

PDF Signing

Sign PDF Files

Add legally binding electronic signatures to your PDF documents. Fast, secure, and legally compliant digital signing.

Drag & drop your PDF files here

or click to select files

Legally Binding

Compliant with e-signature laws

Secure Encryption

Military-grade security

Fast Signing

Sign documents in seconds

Offline Capable

Works without internet

Complete PDF Toolkit

Everything you need to work with PDF files in one place

Edit PDF

Edit text, images and annotations

Merge PDF

Combine multiple PDFs into one

Compress PDF

Reduce file size without quality loss

Convert PDF

Convert PDF to Word, Excel, images etc.

Protect PDF

Add passwords and security

Sign PDF

Digitally sign PDF documents

Translate PDF

Translate documents into different languages

Summarize PDF

Generate AI-powered document summaries

Why Choose PDFly?

The most trusted PDF solution for millions of users worldwide

Students

Sign application forms, internship agreements, and academic documents with legally valid electronic signatures.

Professionals

Execute contracts, approve proposals, and sign business documents with secure digital signatures.

Businesses

Streamline document workflows with electronic signatures for contracts, agreements, and official paperwork.

Frequently Asked Questions

Everything you need to know about signing PDF files

Get started with PDFly today

Free, secure and all-in-one PDF solution for everyone.