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Last updated on Oct 22, 2026

Edit and Add Signature to PDF

Sign your PDF documents quickly and easily using pdfFiller's signature tool, accessible from any device.

What is the Signature Tool?

The signature tool allows you to edit and add signature to PDF documents, providing a user-friendly interface designed specifically for small and medium-sized businesses. This tool enables self-signing of documents, distinguishing it from the process of sending documents for signature. You can choose from three signing methods: drawing, typing, or uploading an image of your signature. Each method is designed for ease of use, ensuring that even those with minimal technical skills can navigate the process effortlessly.

How Does This Feature Improve Your Workflow?

Small businesses often face common workflow issues, such as delays in document signing and the need for physical signatures. The signature tool addresses these challenges by offering digital signatures that enhance speed and efficiency. With the ability to sign documents electronically, you can reduce turnaround times and eliminate the need for printing and scanning, ultimately streamlining your document workflows.

Three Ways to Create a Signature

There are three primary methods to create a signature using pdfFiller: you can draw your signature, type it, or upload an image. Each method holds legal equivalence, meaning they are all valid for signing documents. Drawing is ideal for those who prefer a handwritten look, typing allows for quick entry with customizable fonts, and uploading is perfect for those who already have a signature image ready to use. Choose the method that best suits your needs for editing and adding a signature to PDF documents.

How to Draw Your Signature

  • Use a mouse, touchpad, or stylus to draw your signature directly on the document.
  • Select your preferred color and thickness for the signature line to customize its appearance.
  • Position your signature in the desired location on the PDF document.
  • Ensure your drawing is clear and recognizable before finalizing the signature.

How to Type Your Signature

  • Choose a font style that reflects your personal or professional brand for your typed signature.
  • Select a color for the text to ensure it stands out against the document background.
  • Resize the signature text to fit appropriately within the designated area of the PDF.
  • Reposition the typed signature as needed to achieve a professional look.

How to Upload a Signature Image

  • Prepare your signature image in a supported format, such as PNG or JPEG.
  • Click the upload button and select the image file from your device.
  • Adjust the placement of the uploaded signature on the document to ensure it fits well.
  • Resize the image if necessary to match the dimensions of the signature field.

Adding Initials to Your Document

You can add initials to your PDF using the same methods as signatures. Whether you choose to draw, type, or upload an image, each method allows for customization in terms of style and color. It's important to note that initials hold the same legal validity as signatures, making them suitable for various document types, including contracts and agreements.

Saving and Reusing Your Signatures

To save your signatures for future use, follow these steps: After creating your signature, look for the option to save it within the tool. You can set a default signature that will automatically populate in future documents. Accessing saved signatures is straightforward, allowing you to quickly reuse them without needing to recreate them each time.

Legal Validity of Your Signatures

The signatures created using pdfFiller are compliant with legal standards such as ESIGN, UETA, eIDAS, and GDPR. This compliance ensures that your electronic signatures are legally binding. Additionally, the tool provides an audit trail for each document signed, and signatures are verified by a pdfFiller badge, adding an extra layer of security and trust.

Common Scenarios for Using Signatures

There are numerous practical scenarios where you might need to edit and add a signature to PDF documents. For instance, signing a lease agreement requires a quick and secure method to finalize the contract. Authorizing a contract can also be done efficiently with digital signatures, eliminating delays. Completing forms that require your signature can be streamlined, allowing for faster processing and submission.

Browser and Device Compatibility

pdfFiller's signature tool is compatible with various browsers and operating systems, ensuring that you can access it from any device. Whether you are using a desktop, laptop, tablet, or smartphone, the user experience remains consistent. Mobile signing is also supported, allowing you to sign documents on the go without any issues.

Limitations of the Signature Tool

While the signature tool offers many features, it does have limitations. For example, you cannot request signatures from others using this tool; it is designed solely for self-signing. Additionally, saved signatures cannot be auto-applied to documents, requiring manual selection each time. Understanding these constraints will help you utilize the tool effectively.

Next Steps After Signing

After signing your documents, you can easily share them with others via email or other sharing options. pdfFiller also integrates with various features, allowing you to manage your documents more efficiently. Explore additional tools within pdfFiller to enhance your document management experience further.

Try most popular PDF tools

Discover a full set of tools to handle any document task.

Edit PDFs

Make quick PDF edits online.

Sign

Add legally binding signatures.

Merge

Combine multiple PDFs.

Request signatures

Send a document for signing.

Convert

Transform PDFs into other formats.

Rearrange

Change the order of pages.

Share

Send PDFs for review or editing.

Compress

Reduce PDF file sizes.

How to sign a document online?

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Signing and editing documents has never been easier

  • Edit and sign in one place Quickly eSign documents after reviewing or editing — no need to juggle tools and move files back and forth. Get your PDFs done fast with all the tools you need at your fingertips.
  • Easy sharing & collaboration After signing a document, share it instantly with clients and stakeholders for review, editing, or comments. To request signatures from other parties, add fillable fields and send the document for signing.
  • Mobile-ready solution Easily edit, sign, and send your documents from anywhere, even on the go. pdfFiller is entirely cloud-based, so you can manage documents effectively from your computer, smartphone, or tablet.
  • Legally binding & secure Sign contracts and agreements following global eSignature laws, including ESIGN, UETA, eIDAS, and GDPR. With HIPAA, PCI DSS, SOC 2 Type II, and other compliance standards, pdfFiller works for any industry.

Who needs this?

Explore how professionals use pdfFiller to sign documents.

Healthcare

Healthcare professionals use pdfFiller to simplify document signing, from patient consent forms to medical record requests. They can easily request, approve, and share signed documents with patients, staff, or suppliers, saving time and improving communication.

  • Patient consent forms
  • Prescription forms
  • Lab test requisition forms
  • Referral and consultation forms
Healthcare
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  • G2 — Grid Leader in Small-Business
  • G2 — High Performer
  • G2 — Regional Leader
  • G2 — Easiest To Do Business With
  • G2 — Best Meets Requirements
  • G2 — Best Support

pdfFiller scores top ratings on review platforms

pdfFiller is rated 4.6 out of 5 stars across 1,000+ G2 reviews.

I have had ease in paperwork and documents saved.
Nancy J E
Pretty helpful and friendly to use. Would like to learn more to make the most out of the application.
Luis B
The app worked fine, I only needed a couple of items scanned.
Anonymous Customer
It has help me a lot and make it easier to with all kinds of documents
Freddy Chavez H
Perfect for avoiding/wasting printing… Perfect for avoiding/wasting printing items that don't need a wet signature. Easy to download, save, email, etc.
Samantha Williams
Friendly to use hence I dont have to wreck my head thinking how to use any of the features.
zimah abd r

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FAQs

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To edit and add a signature to a PDF using pdfFiller, simply upload your document to the platform, select the 'Signature' tool, and either draw, type, or upload an image of your signature. Once added, you can adjust its size and position. This process ensures your signature is securely integrated into the document. For best results, ensure your signature is clear and legible. Additionally, pdfFiller's cross-platform compatibility allows you to access your documents from any device, making it convenient for remote professionals.

pdfFiller prioritizes user security by employing advanced encryption protocols when you edit and add a signature to a PDF. All documents are stored securely in the cloud, and access is restricted to authorized users only. This ensures that your sensitive information remains protected. For added security, consider using two-factor authentication when logging into your pdfFiller account. This extra layer of protection safeguards your documents during the editing process, especially for legal teams handling confidential materials.

Yes, pdfFiller allows you to edit and add a signature to a PDF on mobile devices through its user-friendly app. Simply download the pdfFiller app, upload your PDF, and use the signature tool to add your signature directly from your smartphone or tablet. This feature is particularly beneficial for remote professionals who need to manage documents on-the-go. Ensure your mobile device has a stable internet connection for seamless document access and editing.

Using pdfFiller to edit and add a signature to a PDF offers numerous advantages over traditional methods, such as printing and signing documents. It saves time by eliminating the need for printing, scanning, and mailing. Additionally, pdfFiller provides a streamlined, cloud-based solution that allows for easy collaboration among team members. For SMEs, this means faster turnaround times for document approvals. Moreover, the platform's document automation features help reduce errors and enhance efficiency in your workflow.

If your signature does not appear correctly after editing a PDF, first check the size and position of the signature within the document. You can easily resize or reposition it using the pdfFiller interface. If the issue persists, try re-uploading your signature image or using the drawing tool to create a new signature. Ensure that the file format of your signature image is supported by pdfFiller. For optimal results, use a high-resolution image to maintain clarity when added to your PDF.

Yes, pdfFiller allows you to add multiple signatures to a single PDF document. This feature is particularly useful for documents that require signatures from multiple parties, such as contracts or agreements. Simply use the signature tool to place each signature in the appropriate location. Additionally, you can save frequently used signatures for quick access in future documents. This capability enhances collaboration and streamlines the signing process for legal teams and remote professionals alike.

pdfFiller supports document automation by allowing users to create templates that include pre-defined fields for signatures and other information. When you edit and add a signature to a PDF, you can save this setup as a template for future use, significantly reducing the time spent on repetitive tasks. This feature is especially beneficial for SMEs that frequently handle similar documents. By automating the signature process, you enhance efficiency and accuracy, ensuring that all necessary signatures are captured without manual oversight.

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pdfFiller allows us to tap into additional markets and sell business we might not otherwise have sold because of the speed and ease with which we can produce the forms.

Scaturro Insurance Agency LLC

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