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 Apr 22, 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.

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Convert PDFs into Word, Excel, JPG, or PPT files and vice versa.

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
I have been using PDFfiller for about a month now and it has served as a valuable part of what I do. My client's have found the new documents easy to open, download, or sign.
Tonia
I can't verify that my completed forms are actually sent to recipients. Programs keeps requesting me to have my e-mail verified but no code is ever sent to my e-mail.
Gideon S
It fulfills my needs. I use it on my pad, but becasue of the problem of an empty folder I am trying out the internet version. Still good. I can use both.
ramiro g
I went into your chat hoping to get… I went into your chat hoping to get answers to my inquiries regarding my account and why I couldn't locate what it kept telling me that I should be seeing. Kara was the second chat agent I messaged in this desire to find out what I was doing wrong... which is fine. The first agent was like an operator I assume... finding out what I needed exactly and then transferring me to the right team. Which happened really QUICKLY!! I am NOT used to any online chats actually being able to do anything as fast as this happened today! Much less get an agent that could actually help me... TODAY was the first in a very LOOOONG time! Kara was GREAT!!! She needs a raise and maybe a promotion. Thanks again, Kara!!! KUDOS to Kara!!! The one entity that I HAD dedicated my loyalty to (Best Buy) for over a decade... is now in my rearview mirror!!!! They are atrocious at helping anyone with anything online!!! The store employees have to go through the same phone number we do, so they're worthless! And corporate Best Buy... smh... I won't get ugly here, but just state that they were the final straw that broke the camel's back!! I will NEVER give them any more of my time or money!!! PDF Filler though... has been a nice change!!! Thanks again!!!
D. Lang
Easy accurate and helpful! This is an awesome tool for making even the most unprofessional professional. It is easy, concise and easily editable. It is well worth the price.
Paula Lucas
I am really happy with pdfFiller and… I am really happy with pdfFiller and excellent support staff. Really thankful to them for prompt response to my queries and sorting them out quickly
Nandita Ghosal
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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!
To add signatures into PDF documents securely, use a reputable electronic signature tool like pdfFiller. This platform integrates advanced security protocols to ensure your signed documents are protected. Start by uploading your PDF, then select 'Add Signature'. You can choose to draw, upload an image, or type your name in a stylized font. Be sure to save your work to prevent loss of data. Remember to verify the security settings in the app to ensure compliance with legal standards.
Yes, you can easily add multiple signatures into a single PDF using pdfFiller. After uploading your document, simply select 'Add Signature' for each signature you need to insert. You can place each signature in the appropriate sections of the PDF by dragging them to the desired location. This feature is especially useful for contracts or agreements requiring multiple approvals. For efficiency, consider utilizing document automation tools offered by pdfFiller to streamline your workflow.
Absolutely, pdfFiller allows you to add signatures into PDF forms regardless of their creation platform. Whether your forms were generated in Word, Google Docs, or other formats, you can convert them to PDF and utilize pdfFiller’s signature features. This cross-platform compatibility ensures that all users can maintain a uniform signing process. Always check that your forms are fully compatible and formatted correctly before uploading to avoid any editing issues.
To ensure that the signatures you add into PDFs are legally binding, use a trusted electronic signature platform such as pdfFiller that complies with e-signature laws like ESIGN and UETA. Start by verifying that your PDF is formatted correctly and includes necessary information that indicates consent. After adding your signature, you’ll receive a certificate of completion, which acts as a legal record of the transaction. Remember to educate your team on the security protocols to maintain document integrity.
To add a handwritten signature into a PDF document, first, capture your signature using a touch screen or signature pad, or upload an image of your scanned signature. Using pdfFiller, navigate to the 'Add Signature' feature after uploading your PDF. Select the option to 'Draw' or 'Upload', and follow the prompts to place your signature. This method provides a personal touch to your documents while retaining a professional look. Ensure your signature image is clear for best results.
To keep track of documents after adding signatures into PDFs, utilize pdfFiller's document management features which include tracking and version history. After signing your document, you can easily organize and categorize it within your dashboard. Set reminders for follow-ups or actions needed on specific documents using the workflow tools available. Having organized access to signed documents is critical for remote professionals and legal teams to maintain compliance and enhance collaboration.
If you encounter issues adding a signature into your PDF, first ensure that your internet connection is stable and that you're using a supported browser to access pdfFiller. Clear your cache and reload the page if you experience lag. If the problem persists, check that your PDF is not password-protected or corrupted, as these factors can hinder the signing process. Additionally, consult the help resources or support team through pdfFiller for further assistance.

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

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