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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.

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or drop your first file here

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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.

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How to sign a PDF on a Mac

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Read more How an eSign API keeps your business compliant→

Frequently asked questions

  • 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.

  • Adding your eSign to a PDF is simple:

    1. Upload your PDF document

    2. Invite users to sign

    3. Add a due date

    4. Apply your eSignature

    Your signed document is ready to download instantly.

  • 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.

  • 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.

  • 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.

  • 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.

  • 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).

  • Yes! Our platform works seamlessly on iOS & android devices using the Lumin Sign app.

  • 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

  • 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

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    A digital signature workflow tool that seals deals with legally-compliant signatures.


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  • Lumin Sign API

    An eSignature API made to be plugged into your platform with minimal effort.

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