Перейти до основного вмісту

How to sign a PDF on a Mac for free in 6 easy steps

3 mins

Jul 24, 2025

Whether you’re working on contracts, agreements, or other business documents, knowing how to sign a PDF on your Mac can streamline your workflow. Discover how to easily sign PDFs without needing extra software.

In today's fast-paced, digital world, being able to sign documents electronically isn’t just convenient—it’s a must. With remote work becoming more common and businesses relying on secure document management, knowing how to sign a PDF file on a Mac is an essential skill. Fortunately, Dropbox offers a seamless way to manage this task, allowing you to sign PDFs in just a few clicks on any MacOS device.

Office workspace with employees using Macs, discussing signing PDFs.

Preparing your PDF document for signatures

Before the signing process begins, it’s crucial to prepare your document for signatures. Whether it’s a contract, agreement, or form, ensure the PDF is fully accessible and easy to read. This means checking that the formatting is clear and all-important details are visible. Proper preparation not only saves time but also reduces the chances of errors when signatures are added.

By setting up your document carefully, you minimize mistakes and make the signing process smoother, whether for legal agreements, business deals, or anything else.

How to sign a PDF on your Mac using Dropbox: Step-by-step guide

Dropbox allows you to sign PDFs directly from your Mac without needing to download additional software. Follow these simple steps:

Step 1: Access your PDF in Dropbox

  • Open Dropbox: Start by opening the Dropbox app on your Mac. If you don’t have Dropbox, sign up for a free account.
  • Navigate to your PDF: Find the PDF in your Dropbox folder. Click to preview it directly in Dropbox and confirm it’s the correct document.

Step 2: Prepare to add your signature

  • Enter Edit mode: Once the document is open, find the Edit option in the toolbar at the top or bottom. Click it to enable the editing features.
  • Select Add Signature: Choose the Add Signature option to start the signing process. Dropbox allows you to either create a new signature or use one you've previously saved.

Step 3: Create or use a saved signature

  • Draw your signature: If signing for the first time, draw your signature using your mouse or trackpad. If your device is touch-enabled, you can also use your finger or stylus.
  • Use a saved signature: If you’ve already saved a signature in Dropbox, select it to insert it quickly.

Step 4: Position and resize your signature

  • Adjust placement: Once added, move the signature to the correct spot on the document by dragging it.
  • Resize as needed: If the signature is too large or small, resize it by dragging the corners.

Step 5: Add additional information if needed

  • Insert text or dates: If the document requires a date or name, use the Add Text or Add Date options.
  • Customize the text: After adding the necessary information, adjust the font size and color if needed.

Step 6: Save and share the signed PDF

  • Save your changes: Once the document is complete, click Save to apply all the changes.
  • Share or export: You can now share the signed PDF directly from your Dropbox account or export it to store locally.

With these easy steps, you can sign documents without leaving the Dropbox platform—keeping everything efficient and digital. You can also use Dropbox to sign electronic signatures on an iPhone or iPad, making it easier to manage documents across multiple devices.

Enhancing PDF signing with Dropbox

Dropbox makes it easy to sign PDFs and manage documents on your Mac. The ability to access, sign, and share documents without ever leaving the platform streamlines your workflow and saves valuable time. Whether you need to add a signature on the go or collaborate on contracts with your team, Dropbox boosts your productivity.

Full-scale document management with Dropbox

Dropbox offers a complete suite of tools for signing and managing documents, helping you work smarter:

  • Sync your PDFs: Ensure your documents are always backed up and accessible across all your devices by syncing them with Dropbox
  • Collaborate easily: Dropbox allows real-time collaboration, so team members can review, edit, and sign documents simultaneously, improving communication and workflow
  • Secure sharing: The secure sharing features in Dropbox, including password protection and expiration dates for shared links, ensure your signed documents remain protected
A cursor hovers over a tag labeled "PDF" among other project-related files in the Dropbox file management interface.

Additional PDF management features in Dropbox

Beyond signatures, Dropbox makes it easy to manage PDFs in several ways:

Learn more about the full capabilities of Dropbox

Signing PDFs on a Mac has never been easier with the range of free tools available in Dropbox. In addition to signing, Dropbox enhances the overall document management process by offering secure sharing, collaboration, and storage.

Sign up for a free account today and explore the full capabilities of Dropbox.

Explore related resources

A person working at home office computer, reading PDF content onscreen with documents and stationery spread across desk.

How to remove pages from a PDF for free

Learn how to remove pages from a PDF with our guide. Clean up reports, update contracts, or optimize documents professionally.

A person using Android phone to access and sign PDF document, bright city background in focus.

How to sign a PDF on your Android device for free in 4 simple steps

Need to sign a PDF on Android? Learn how to do it in 4 simple steps using Dropbox—no extra apps required. Fast, secure, and fully mobile.

Person walking down a street lined with trees and buildings while looking at their smartphone.

How to sign a PDF on an iPhone in 4 easy steps

Learn how to sign a PDF on your iPhone in 4 steps with Dropbox. Securely manage and share documents easily.