Add Electronic Signature PDF on Linux For Free

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How to Add Electronic Signature PDF on Linux with pdfFiller

What does it mean to add an electronic signature to a PDF?

Adding an electronic signature to a PDF involves annotating the document with a virtual signature, which serves the same purpose as a handwritten signature. This process typically utilizes a digital certificate that verifies the identity of the signer and enhances the document's security. The e-signature not only provides legal compliance but also streamlines document workflows, allowing for faster approvals.

Why adding an electronic signature is critical for modern document workflows

The integration of electronic signatures into document workflows offers numerous advantages. It reduces the time spent on manual signing processes, minimizes paperwork, and promotes eco-friendly practices. In an increasingly digital world, being able to quickly sign contracts, agreements, and other important documents can significantly enhance productivity.

Use-cases and industries that frequently add electronic signatures

Various industries benefit from electronic signatures, particularly where documents require urgent approvals. Common use cases include:

  • Real Estate: Signing lease agreements and purchase contracts.
  • Legal: Finalizing contracts and agreements swiftly.
  • Insurance: Processing forms and claims efficiently.
  • Healthcare: Authorizing patient consent forms.

Step-by-step: how to add an electronic signature in pdfFiller

Adding an electronic signature to a PDF in pdfFiller involves the following steps:

  • Log into your pdfFiller account.
  • Upload the PDF document.
  • Click on the 'Add Signature' option.
  • Choose to draw, type, or upload your signature.
  • Place your signature on the document.
  • Save the signed document or send it directly.

Options for customizing signatures, initials, and stamps when you add e-signatures

pdfFiller provides versatile options for customizing your electronic signature. Users can create signatures that reflect their identity, whether by drawing, typing, or uploading an image. Additionally, initials and stamps can be added for further personalization, enhancing recognition and formality in business contexts.

Managing and storing documents after you add an electronic signature

Once you have added an electronic signature to a PDF, pdfFiller allows you to manage and store your documents securely in the cloud. You can categorize documents, set permissions for sharing, and track edits. This capability not only ensures easy access from any device but also maintains the integrity of the signed documents.

Security, compliance, and legal aspects when you add e-signatures

Using electronic signatures is governed by laws such as the ESIGN Act and UETA in the U.S. pdfFiller ensures that all e-signatures comply with these regulations, advocating for security and legal validity. By encrypting documents and implementing secure access controls, pdfFiller maintains a robust security framework.

Alternatives to pdfFiller for electronic signature workflows

Several alternatives exist for adding electronic signatures to PDFs, each with unique offerings. While exploring alternatives, consider factors such as user experience, features, and pricing. Notable competitors include:

  • DocuSign: Known for its widespread adoption and superior integrations.
  • HelloSign: Offers a streamlined user interface and essential features.
  • Adobe Sign: Provides advanced features but may require higher costs.

Conclusion

Adding an electronic signature to a PDF is a pivotal function in enhancing digital document workflows. With pdfFiller, users are empowered to integrate e-signatures seamlessly into their processes, leading to increased efficiency and compliance. Understanding the significance and the steps involved ensures that individuals and teams can leverage this capability effectively.

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 Select and fill out tax form

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
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PCI
HIPAA
CCPA
FDA

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
What do you like best?
The ability to easily sign documentation, and have these pages sent directly to their intended recipients from one location. That it is cloud based and it's easy ability to integrate with our existing customer support solutions and office365
What do you dislike?
Their is very little to dislike by this platform, but the ability to add multiple sources for example if I want to print and email a copy of a document at once would be good. It's quite clunky at the moment, requiring us to save and then go back into the system and request print when we need a hard copy of the documents.
Recommendations to others considering the product:
Very easy to use, and very competitive pricing. If you compare this product with the more expensive competition it does all of the same things but at considerable less cost. I'd highly recommend this product to anyone looking at obtaining signatures or sharing documentation via the cloud. The control panel is very innovative and makes requesting/creating documentation very easy for end users.
What problems are you solving with the product? What benefits have you realized?
We have literally saved countless reams of paper and many man hours through using this software. Documents can be electronically signed, and sent and you can even request a signature for documents. Collaborating with staff and end users is made very easy through the user interface that is provided and you can easily see which users have signed the documentation or even request reminders when documents remain in a pending state.
Robert Chojnowski
What do you like best?
As a Realtor, my whole business is based on electronic documentation. PDF filler is kind of named poorly, because it really is a PDF editor. It allows you to easily change almost anything on a pdf document...across both desktop and mobile platforms. It simply works as you'd expect it to...every time. I use it practically every day.
What do you dislike?
I wish there were better tools for generating lines (how about a toggle into and out of orthagonal for a line?) It should allow deeper zooming with a thumbnail view showing where you are in the overall document. I like my pdfs to look perfect and sometimes these limit me in that goal.
What problems are you solving with the product? What benefits have you realized?
A Realtor literally lives or dies on his/her electronic documentation. This tool lets me master the changes that inevitably occur with documents. I use it every day.
Arjen Sundman
What do you like best?
Very handy and always dependable. It's easy to save and edit documents.
What do you dislike?
The price seems high compared to other online services.
Recommendations to others considering the product:
Consider lowering the price.
What problems are you solving with the product? What benefits have you realized?
Filling out PDF trade show applications, tax forms, and other work-related documents.
Kathryn Johnson
Banking Faetures This app is excellent and proficient! I´m not the most savvy or experience with software programs this one was easy and accurate! I actually enjoy using it I´ve downloaded other apps but this one was most efficient!
Josette Sanders Young
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Harold C
I am more than satisfied with the… I am more than satisfied with the functions of this application. As a student I find this platform to be very useful. I plan on keeping my subscription
Bryan Pelaez
buena manera de preparar archivos para lo que me interesa . entrenamientos de futbol sala. espero que me puedan explicar como ver los contenidos en español. gracias
Antonio M
Perfect for what I needed. The features are great but I wouldn't continue using it long term, because it's a bit pricey for something I won't use very often.
Steve
A Comprehensive and User-Friendly PDF Editing & Document Management Solution I recently started using pdfFiller for my document needs, and my overall experience has been very positive. The platform offers a wide array of features that make handling PDFs and documents incredibly efficient. All-in-One Functionality: pdfFiller truly lives up to its promise as an "all-in-one" solution. Whether you need to edit, merge, split, sign, or even rearrange pages, everything is available in one intuitive dashboard. This has streamlined my workflow significantly by eliminating the need to juggle multiple applications.
Deborah Swan
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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!
Select Annotate PDF from the File menu and select your PDF file to be signed. Click the Image button in the toolbar (it looks like a silhouette of a person) or press Shift+Ctrl+I (that is "I" for Image). Click on document, and a file browser dialog will open. Select the image of your signature.
How to Check a Digital Signature of a File in Linux Check If Gnu Privacy Guard (i.e., GnuPG or GPG) Is Already Installed on Your System. Download the Publisher's Public Key. Import the GPG Key. Download the Pretty Good Privacy (PGP) Signature File. Verify the Signature of the Installer.

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

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