Add Signatures into PDF For Free

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Up to 100 MB for PDF and up to 25 MB for DOC, DOCX, RTF, PPT, PPTX, JPEG, PNG, or TXT
Based on 12500+ reviews
Last updated on Jan 26, 2026

What is Add Signature to PDF?

‘Add Signature to PDF’ is a seamless solution offered by pdfFiller that lets you electronically sign documents with ease. It’s a fast, secure, and efficient way to add legally - binding signatures to any PDF file, eliminating the need for printing or scanning.

Why adding signatures to PDFs is essential for document validation

Signatures are a critical part of verifying the authenticity and intent behind a document. By adding signatures to PDFs, you ensure the document is legally recognized and secure, making it ideal for contracts, agreements, and other important paperwork. Digital signatures streamline this process, offering the same level of validation without the hassle of physical documentation.

How to add signatures to PDFs easily

With pdfFiller, you can sign PDF documents quickly and effortlessly. Simply upload the document, choose the “Sign” tool, and sign using your preferred method—draw your signature, type it, or upload an image of your handwritten signature. pdfFiller ensures the process is intuitive and hassle - free, saving you time while ensuring accuracy and security.

Real - life uses for adding signatures to PDFs

Signing PDFs with pdfFiller is a powerful functionality that brings convenience, speed, and security to document management. Whether for personal, professional, legal, or educational use, this feature adapts to your needs, helping you handle important paperwork effortlessly and efficiently.

Closing business deals faster

With digital signatures, entrepreneurs, small business owners, and professionals can speed up contract signings, service agreements, and NDAs. This eliminates delays caused by physical meetings or mail, ensuring deals are finalized without unnecessary downtime.

Simplifying team approvals

For remote or hybrid teams, signing PDF documents online ensures quick approvals for budgets, project proposals, or internal policies. This feature keeps teams productive and aligned, even when spread across different locations.

Ensuring legal authorization

Legal practitioners and administrative teams can use this feature to authorize documents such as affidavits, contracts, or compliance forms. Its secure and legally binding nature makes it an ideal option for highly regulated industries.

Streamlining healthcare and education processes

Healthcare providers can sign consent forms or prescriptions digitally, while educators can quickly authorize forms like enrollment documents or agreements. This adds speed and accuracy to workflows, benefiting both staff and those they serve.

Try these PDF tools

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Send a document for eSignature.
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Merge
Combine multiple PDFs into one.
Rearrange
Rearrange pages in a PDF document.
Compress
Compress PDFs to reduce their size.
Convert
Convert PDFs into Word, Excel, JPG, or PPT files and vice versa.
Create from scratch
Start with a blank page.
Edit DOC
Edit Word documents.

Collect legally binding electronic signatures the easy way

Edit, sign, send — done!

Quickly edit documents online, add signatures, and send for signing — all from one easy-to-use solution you can access from anywhere.
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Customize your workflow

Send documents to a single recipient or an entire group. Assign roles, set a signing order, and schedule reminders for a smooth, error-free process.
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Collect data efficiently

Create fillable PDF forms and let your recipients complete them from any device. Publish forms online or share them via a direct link to capture data and signatures without chasing people down.
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Track and store documents

Get real-time visibility into the signing process and keep track of all your documents in one place. Your files are stored in secure cloud storage, so you can access them anytime and anywhere.
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Share & collaborate

Need more eyes on a document before sending? Share it with the team to edit or highlight content, redact sensitive information, leave feedback, and exchange comments.
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Maintain security & compliance

Collect signatures in compliance with ESIGN, UETA, eIDAS, and GDPR. Protect your documents with a password, request additional signer authentication, set document expiration dates, and more.
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How to send a document for signature?

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Upload

Upload your document to pdfFiller and click E-sign.
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Add recipients

Choose who needs to sign and add as many recipients as you need.
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Prepare

Drag and drop fillable fields on your document and assign them to specific recipients.
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Finalize & send

Review your recipients, customize the signing order, set reminders, and hit Send.
Upload your document

Who needs this?

Explore how professionals use pdfFiller to get documents signed.
Sales
Human Resources
Legal
Real Estate
Education
Finance
Sales

Sales

Quickly edit contracts, add eSignatures, and send them to clients or vendors for signing without leaving pdfFiller. Track who has signed and who still needs to take action, keeping your business running smoothly.
  • Service agreements
  • Vendor contracts
  • Non-disclosure agreements (NDAs)
  • Purchase orders
Human resources

Human Resources

Create fillable PDF forms for offer letters, employment contracts, and onboarding documents. Let new hires complete and sign them from any device, making the onboarding process accessible and hassle-free for everyone.
  • Offer letters
  • Employment contracts
  • Non-compete agreements
  • Benefits enrollment forms
Real estate

Real Estate

Edit property agreements, add signature fields, and send them to buyers, sellers, or agents for signing. Send documents to a single recipient or an entire group, and track the signing process in real time to ensure timely closings.
  • Purchase agreements
  • Lease contracts
  • Property disclosure forms
  • Inspection reports
Education

Education

Create fillable forms for permission slips, enrollment documents, or policy acknowledgments. Allow parents, students, or staff to complete and sign them from any device. Keep track of all signed documents in one secure place for easy access and compliance.
  • Permission slips
  • Enrollment forms
  • Scholarship applications
  • Teacher contracts
Finance

Finance

Edit financial agreements, add eSignatures, and send them to clients or stakeholders for signing. Allow clients to complete and sign online digital forms from anywhere to simplify loan applications, account openings, and authorizations.
  • Loan agreements
  • Investment contracts
  • Financial statements
  • Payment authorizations

Why sign documents with pdfFiller?

GDPR
AICPA SOC 2
PCI
HIPAA
CCPA

Ease of use

Users appreciate pdfFiller's intuitive interface and the ability to manage documents from anywhere without clunky desktop software.

More than eSignature

pdfFiller is a complete solution that offers PDF editing, eSignature, file storage, and collaboration under one roof.

For individuals and teams

Whether you work solo or with a team, pdfFiller equips you with all the tools to handle your daily document tasks.

Collect signatures with a trusted, all‑in‑one solution

Try easy-to-use tools for all your document management needs.
Upload your document

pdfFiller scores top ratings on review platforms

Users Most Likely To Recommend - Summer 2025
Grid Leader in Small-Business - Summer 2025
High Performer - Summer 2025
Regional Leader - Summer 2025
So far I have been satisfied with finding the forms that I need. However, I don't fax things and just wandering if that is included in the amount that I paid of $ 120.00.
Estelle W
PDF Filler Review From forms, to contracts and or agreements I constantly have to fill out documents and then sign them. Your software facilitates these for me in addition to protecting them in a pdf format. I enjoy using your software portal and it solves 99% of my problems. The only issue that comes up from time to time is that when certain large vendors send me a form to fill out and I return it to them they do not recognize it. They want me to use Adobe instead, which I do not care for. I wish there was a way to save the finished document as if it were compatible with Adobe.
Harold B.
Great onboarding, and lifesaving functionality Lifesaver, amazing and frictionless free sign-up journey. Edited and saved a really important PDF in minutes
Zak Smith
Ryan was extremely patient and persistent to solve the issue Ryan was beyond patient with me to solve my issue. I really felt like he was determined to have me understand the instructions he was giving me towards the solution. He used a few of approaches. One of which was sending me a visual with arrows.....That worked!!!! His patience and persistence is refreshing and truly appreciated.
Liezette Abel-Ruffin
Great Customer Service Great customer service, very quick reply and they took care of my issue immediately. Highly recommend this company. I did use the service as a free trial once and it's well worth the yearly fee if you have a need for a service where you can fill out, update and/or use .pdf documents.
Susan O.
Their customer service is great! Joyce helped me out and was super helpful and considerate! Best customer service experience I’ve had. Thanks for the quick response!
Sarah B.
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Watch pdfFiller eSignatures in action

Check out a quick video tutorial that shows how to create and place your signature or send a document for signing.

FAQs

If you can't find what you're looking for, please contact us anytime!
You can add multiple signatures to a PDF using the pdfFiller eSignature tools. This is particularly useful for documents requiring signatures from multiple people, such as contracts or agreements. You can easily place each signature in the appropriate field and set up a signing order, ensuring a professional and accurate final document.
Yes, pdfFiller makes it easy to add digital signatures for multiple individuals on the same PDF document. Whether it's a contract, agreement, or approval form, you can place signature fields for all parties involved. Each person can sign remotely, streamlining collaboration and saving time typically spent coordinating in-person meetings.
With pdfFiller’s mobile app, signing PDF forms on the go has never been easier. Simply download the app, log in, and start signing. You can also access pdfFiller directly through your mobile browser if you prefer not to use an app. With seamless mobile access, you can stay productive wherever you are, no desk required.
pdfFiller provides several options for personalizing your electronic signature. You can type your name in a preferred style, draw your signature using a mouse or touchscreen, or upload an image of your handwritten signature. These options allow you to create a professional, personalized look that suits any document type.
Adding an electronic signature to a PDF with pdfFiller is highly secure. The platform protects your documents with advanced encryption, two-factor authentication, and compliance with global security standards. This ensures your data and signatures are handled confidentially and protected from unauthorized access.

Collect signatures with a trusted, all‑in‑one solution

Try easy-to-use tools for all your document management needs.
Upload your document