eSign PDFs securely
Digitally sign PDF documents in seconds. Drop your PDF file below, invite signers, add a due date, assign eSignatures and track the progress. Free document signing.
or drop your first file here
You're in good company
How to eSign a PDF
Follow these simple steps to eSign your PDFs.
- 1
Upload
Drop a PDF file into the dropzone above or click the 'Upload' button.
- 2
Invite to sign
Sign-in, select who needs to eSign the document then add signers & viewers.
- 3
Add due date
Add a due date for the completion of the document.
- 4
Prepare
Assign text, date and signature fields to multiple signers.
- 5
Review
A summary of your PDF will be generated for you in seconds.
- 6
Send
The doc has now been sent for signing, view your dashboard to stay updated.
Fast, hassle-free eSignatures for your PDFs
Sign, send, and track documents in just a few clicks with Lumin.
Capture signatures in seconds
Sign your PDF with just a few clicks. Add your signature or initials instantly without printing or scanning. Choose from drawing, typing, or uploading your signature for a personalized touch that saves time and eliminates paperwork.
Request multiple signatures with ease
Send documents to several people at once and collect all required signatures securely in one place. Whether you need two signatures or twenty, manage all your signers from a single dashboard with complete visibility.
Sign anywhere, on any device
Whether you’re on a Mac at your desk, a Windows PC at the office, or your iPhone or Android on the go, signing is always seamless. Open the PDF, add your signature, and finish the job in seconds — no printing, scanning, or switching devices required.
Efficiently track contracts
Monitor the status of your agreements in real time. See who has signed and who still needs to. Get instant notifications when actions are taken, keeping you informed at every step of the signing process.
Guide signers with fillable fields
Add text boxes, checkmarks, dates, and more to guide signers through your document. Create a seamless signing experience by clearly marking where information is needed, reducing errors, and eliminating back-and-forth communication.
Automate reminders
Automate email reminders so signers never miss a deadline. Set custom reminder schedules to gently nudge pending signers, ensuring your documents are completed on time without manual follow-ups.
Join over 100 million customers
Featured articles

eSigning
• Jan 1, 2024
The top 5 free eSignature tools for 2024
So you’re looking for a signature generator, but unsure where to start. We're diving into the top 5 free eSignature tools – because who doesn’t love a freebie?
Read more The top 5 free eSignature tools for 2024
PDF editing
• Jul 25, 2025
How to sign a PDF on a Mac
Looking to sign a PDF on your Mac? This guide covers the simplest (and free) ways to add your signature.
Read more How to sign a PDF on a Mac
eSigning
• Aug 17, 2024
How an eSign API keeps your business compliant
If your signatures aren't compliant, you risk fines or legal action. eSign APIs are one way you can guarantee your signatures are legally binding. Here's how.
Read more How an eSign API keeps your business compliant
Frequently asked questions
What is an electronic signature?
An electronic signature (eSignature) is a digital method of signing documents that replaces traditional pen-and-paper signatures. It can be your typed name, a drawn signature using your mouse or finger, or an uploaded image of your handwritten signature.
E-signatures are legally recognized and eliminate the need for printing, signing, and scanning physical documents.How do I eSign a PDF document?
Adding your eSign to a PDF is simple:
1. Upload your PDF document2. Invite users to sign
3. Add a due date
4. Apply your eSignature
Your signed document is ready to download instantly.Are eSignatures legally binding?
Yes, electronic signatures are legally binding in most countries worldwide. They are recognized under major regulations, including the ESIGN Act (United States), eIDAS (European Union), and similar laws in other regions.
When properly executed with authentication measures and audit trails, e-signatures carry the same legal weight as handwritten signatures.What is the process of asking for a signature from Lumin Sign?
The process is simple. First, invite signers by sending the document to their email addresses. Next, add a due date to ensure timely completion. Then, prepare the document by adding boxes for signatures, dates, initials, or text where needed.
Finally, review everything before sending. Recipients will receive an email invitation to sign electronically, and you will be notified as each person completes their signature.Can I request signatures from others?
Yes, Lumin Sign makes it easy to collect signatures from multiple people. Upload your document, add signature fields where each person needs to sign, enter their email addresses, customize your message, and send. Recipients receive an email link to sign the document online without needing an account. You will be notified as each person completes their signature.
Is it safe to sign documents electronically?
Electronic signatures through Lumin Sign are highly secure. Every signature is protected with 256-bit encryption and includes tamper-evident technology that detects any alterations after signing.
Comprehensive audit trails record all actions, including signer identity, timestamps, IP addresses, and document history, ensuring complete security and compliance with legal requirements.What's the difference between electronic and digital signatures?
Electronic signatures encompass a broader category, covering any electronic symbol or process that indicates agreement to a document. Digital signatures are a specific type of e-signature that uses certificate-based cryptographic technology for enhanced security and verification.
Both are legally valid, but digital signatures provide additional technical authentication through Public Key Infrastructure (PKI).Can I eSign PDFs on my iPhone or iPad?
Yes! Our platform works seamlessly on iOS & android devices using the Lumin Sign app.
Can multiple people eSign the same document?
Yes! Our eSign platform supports multiple signers:
– Set signing order– Add multiple signature fields
– Track signing progress
– Send automatic reminders
– Get notifications when signed
– View signing status
Can I sign PDFs for free?
Lumin Sign offers free electronic signature capabilities to get you started. Create a free account to sign your own documents and send a limited number of signature requests per month.
For unlimited signatures and advanced features like signing orders, API access, custom branding, and team collaboration tools, consider upgrading to a professional plan tailored to your needs.
Discover our products
Lumin
An easy-to-use PDF editor that stands alone or integrates with Google Workspace.
Lumin Sign
A digital signature workflow tool that seals deals with legally-compliant signatures.
Lumin Sign API
An eSignature API made to be plugged into your platform with minimal effort.