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Last updated on Sep 13, 2026

Signature on Mobile

Sign documents quickly and easily from your mobile device.

What is the Signature Tool?

The Signature Tool allows you to self-sign documents directly on your mobile device. This feature is designed for small businesses and professionals who need a straightforward way to sign documents without the hassle of sending them out for signatures. Accessible via the Signature button, this tool enables you to create a legally binding signature that complies with e-signature laws. Unlike traditional methods, self-signing eliminates the need for printing and scanning, making the process efficient and user-friendly.

How Does This Feature Improve Your Workflow?

The Signature Tool significantly enhances your document workflow by eliminating the need for printing and scanning. With this feature, you can sign documents directly from your mobile device, which speeds up turnaround times and allows for quick access from any location. This is particularly beneficial for busy professionals who need to manage their time effectively. By simplifying the signing process, you can focus on your core tasks without unnecessary delays.

Three Ways to Create Your Signature

You can create your signature using three different methods: drawing, typing, or uploading an image. Each method is legally binding, ensuring that your signature holds up in any situation. You can choose the right method based on your preferences and needs, with customization options available to make your signature unique. This flexibility allows you to select the method that best fits your style and the context of your documents.

How to Draw Your Signature

  • Open the Signature Tool on your mobile device.
  • Select the option to draw your signature using a mouse, touchpad, or stylus.
  • Adjust the color and line thickness to your preference.
  • Draw your signature on the screen, ensuring it reflects your usual signature style.
  • Resize and reposition your signature after placement to fit the document correctly.
  • Save your drawn signature for future use, making it ideal for quick signatures.

How to Type Your Signature

  • Access the Signature Tool on your mobile device.
  • Select the option to type your signature.
  • Choose a font style and color that matches your document's tone.
  • Adjust the size and placement of your typed signature for optimal visibility.
  • Review your typed signature to ensure it meets your standards.
  • Save the typed signature for future use, making it a quick and easy method.

How to Upload Your Signature Image

  • Navigate to the Signature Tool on your mobile device.
  • Select the option to upload a signature image.
  • Ensure your image is in a supported file format, such as PNG or JPEG.
  • Follow the steps to upload the image from your device.
  • Check the clarity and legibility of the uploaded signature.
  • Save the uploaded signature for personalizing documents in the future.

Adding Initials to Your Document

Adding initials to your document can be done using the same methods as your signature: drawing, typing, or uploading. You can customize the placement and style of your initials to fit the document's requirements. It's important to note that initials also carry legal validity, making them suitable for formal documents. This quick addition can enhance the professionalism of your signed documents.

Saving and Reusing Your Signatures

To save your signatures, follow the steps to store them in your account. You can set a default signature for convenience, allowing you to use it across multiple documents without having to recreate it each time. Reusing signatures not only saves time but also ensures consistency in your signed documents, which is especially beneficial for frequent signers.

Legal Validity of Your Signatures

Your signatures created with the Signature Tool comply with various e-signature laws, including ESIGN, UETA, eIDAS, and GDPR. Each signed document includes a timestamped audit trail, ensuring that your signatures are legally binding in various jurisdictions. The pdfFiller badge verifies the authenticity of your signatures, providing peace of mind when signing important documents.

Common Scenarios for Mobile Signing

Mobile signing is useful in various real-world scenarios, such as signing a lease agreement, authorizing a contract, or completing a form while on the go. This feature is particularly advantageous for remote work situations, allowing you to manage your documents efficiently from anywhere. The flexibility of mobile signing ensures that you can handle important tasks without being tied to a desk.

Browser and Device Compatibility

The Signature Tool is compatible with a wide range of browsers and operating systems, ensuring that you can access it from various devices. Mobile signing behavior is optimized for both smartphones and tablets, providing a smooth experience regardless of the device you use. This cross-device functionality allows you to work efficiently, whether you're at home or on the move.

Limitations of the Signature Tool

While the Signature Tool offers many benefits, it does have limitations. It does not support recipient-requested signatures, meaning it is limited to self-signing only. Additionally, saved signatures are not automatically applied to new documents, requiring you to select them each time. Understanding these limitations will help you use the tool effectively without expecting features that are not available.

Next Steps for Using Signatures

After signing your documents, you can fill, sign, and share them easily. Integrating this feature with other pdfFiller functionalities enhances your overall document management experience. Explore the available templates to streamline your workflows further. The ease of use of the Signature Tool encourages you to take full advantage of its capabilities in your daily tasks.

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Send a document for signing.

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Change the order of pages.

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Reduce PDF file sizes.

How to sign a document online?

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  • 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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This is great! Easy to use. I tried another company first and theirs would not work.
Anonymous Customer
First Usage - Happy Filled out a few forms and worked better than expected.
Harlan
What do you like best? GREAT to use, has lots of options and you can upload almost anything! What do you dislike? I wish that there were more options, like adding icons, or company stamps. I also have found sometimes when I download it there are lines that run through it, very frustrating when it took like an hour to manipulate a document, and it won't upload without random lines. What problems is the product solving and how is that benefiting you? Specifically AIA forms for commercial contracting, such a great tool!
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100% would recommend! 100% would recommend!
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PDFfiller is just great tool to use to… PDFfiller is just great tool to use to find just about any documents and the ability to create fillable PDF files are great.
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PDF Filler - Very Helpful PDF Filler is an easy way to find and download documents. However, being in South Africa and having to pay in US $ is just too expensive.
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FAQs

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To add a signature on mobile devices with pdfFiller, simply open the app, select the document you wish to sign, and tap on the 'Sign' option. This feature allows you to draw your signature directly on the screen or upload an image of your signature. For optimal results, ensure your mobile device has a stylus or use your finger for precision. This method not only streamlines the signing process but also ensures that your signature is securely integrated into the document, maintaining its integrity across platforms.

pdfFiller employs robust security protocols to protect your signature on mobile devices. All signatures are encrypted using advanced SSL technology, ensuring that your data remains confidential during transmission. Additionally, pdfFiller complies with industry standards such as GDPR and eIDAS, providing users with legally binding signatures. For enhanced security, consider enabling two-factor authentication on your account, which adds an extra layer of protection when accessing sensitive documents.

Yes, pdfFiller supports cross-platform compatibility, allowing you to sign documents on both iOS and Android devices. The app is designed to function seamlessly across various mobile operating systems, ensuring that users can easily access their documents and signatures regardless of the device. To maximize your experience, ensure you have the latest version of the app installed, which includes updates for improved functionality and security features.

Using pdfFiller for mobile signatures offers several advantages over traditional methods, such as reduced turnaround time and increased convenience. Unlike printing, signing, and scanning documents, pdfFiller allows you to sign directly on your mobile device, saving both time and resources. Additionally, the cloud-based nature of pdfFiller ensures that your signed documents are instantly accessible from anywhere, facilitating smoother collaboration among remote teams and legal professionals.

To ensure your signature on mobile is legally binding, use pdfFiller's eSignature feature, which complies with electronic signature laws such as the ESIGN Act and UETA. When you sign a document through pdfFiller, it captures essential metadata, including the signer's IP address and timestamp, which can be crucial in legal contexts. For added assurance, consider using the audit trail feature, which provides a detailed record of the signing process, reinforcing the document's validity.

If you need to edit a document after signing it on mobile, pdfFiller allows you to make changes even after the signature has been applied. Simply open the signed document, and use the editing tools to modify text, images, or other elements as needed. However, be aware that significant changes may require re-signing the document to maintain its legal integrity. This flexibility is particularly beneficial for remote professionals who often need to make adjustments on the go.

Yes, pdfFiller enables you to collect multiple signatures on a document using your mobile device. You can easily set up a signing order, allowing each party to sign in a specified sequence. This feature is particularly useful for legal teams and SMEs that require approvals from multiple stakeholders. To initiate this process, simply upload your document, add the necessary signature fields, and send it out for signing directly from your mobile app.

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