Discover free solutions on how to add a signature stamp in a PDF on Windows, macOS, iOS, and Android.
A signature stamp simplifies document signing by letting you apply a pre-saved signature with just a few clicks.
This guide shows you free ways to add a signature stamp to PDFs on different devices and online. Let’s get started!
PDFgear gives you a free, no-fuss way to sign and stamp PDFs—no email, no credit card, no limits. Just pure signing power.
Step 1. Head over to PDFgear Online Signer> Click “Upload PDF files” > Pick a PDF.
Step 2. Go to “Add or Edit Annotations” > Click “Add Stamp” > Select “Custom Stamp” > Upload your signature image > Place and resize it in PDF > Adjust the opacity to your liking.
Tips: To create your signature image, simply sign your name on paper, then scan your signature and save the image as a JPG or PNG for easy use.
Add Signature Stamp with PDFgear Online Signer
Step 3. Once your masterpiece is set, hit “Download PDF” (bottom right), and boom—your signed document is ready to go!
Download and Save Your Signed PDF
Beyond its handy online toolkits, PDFgear also packs a full-featured PDF application loaded with everything you need—text, shapes, circles, highlights, stamps, signatures, page numbers, bookmarks—you name it!
And the best part? It’s all free. No accounts, no logins, no sneaky paywalls—just pure PDF power.
Step 1. Download PDFgear > Launch it > Click “Open File” > Select a PDF.
(Feeling committed? Make PDFgear your default PDF viewer—you won’t regret it.)
Open a PDF with PDFgear
Step 2. Locate the “Edit” toolbar and click “Stamp”.
Find the Stamp button in the Edit Toolbar
Step 3. Choose your preferred method to create a signature stamp (three options):
● Type Your Signature. Click “Custom Stamp” > Enter your name > Pick your favorite color > Enable “Save the custom stamp” > Click “OK” > Place the signature stamp.
Create a Signature Stamp by Typing
● Use an Image. Click “Picture” > Upload your signature image > Select “Remove background” (because clean edges matter!) > Check “Save the custom stamp” > Click “OK” > Adjust placement and size.
Create a Signature Stamp by Uploading Picture
● Use a Preset Stamp. Hover over “Preset” > Select a stamp > Place it in your PDF > Double-click the stamp > Replace text with your signature > Adjust the color > Click “OK”.
Change the Preset Stamp to the Signature Stamp
Step 4. Save your signed PDF! For extra security, print it out or password-protect the file to keep it safe from tampering.
Mac’s Preview is handy, but no signature stamps—bummer. That’s where PDFgear, a free PDF editor, steps in with full support for stamps and signatures.
With PDFgear, you can turn a handwritten signature image into a stamp or type your name with custom colors.
Need to make it extra official? You can even stamp your signature with the date and time, adding authenticity and protection against tampering.
Step 1. Download PDFgear and open your PDF.
Choose a PDF to Open with PDFgear
Step 2. Go to “Fill & Sign” and click the “Stamp” button.
Navigate to the Stamp Button in PDFgear
Step 3. Choose how to add your signature stamp:
● Insert from an image: Click “Insert Local Image”, select your signature image from your Mac, and set it as a stamp.
Drag the axis label to remove the background from your signature image, enhancing clarity and making it look more professional.
Create a Signature Stamp from an Image
● Customize a text signature: Click “Customize”, type your signature using the keyboard, and select a color.
Create a Signature Stamp from Typing
Step 4. Your signature stamp is ready! Simply place it anywhere in the PDF.
Insert the Signature Stamp into the PDF
👍Furthermore, PDFgear offers powerful signature features on Mac—you can sign your PDF by typing, drawing, or uploading an image.
When you receive a PDF on mobile, PDFgear is ready to help you insert a signature stamp effortlessly. You can create one by typing, drawing, uploading an image, or taking a photo of your handwritten signature.
Step 1. Download PDFgear from the Google Play (Android) or the App Store (iPhone).
Step 2. Open a PDF, tap “Edit”, then go to the “Fill & Sign” section.
Jump to the Fill & Sign Section in PDFgear
Step 3. Tap “Stamp” and select “Create Stamp”.
Prepare to Create a Signature Stamp in PDFgear
Choose from three options:
● Type: Enter your name and customize the color.
● Draw: Use your finger or Apple Pencil to write your signature.
● Image: Upload a scanned signature or take a photo of your handwritten signature.
Create a Signature Stamp in PDFgear
Step 4. Tap anywhere to place your signature stamp and save the PDF.
Insert the Signature Stamp into PDF on Mobile
Want more? PDFgear can also scan a signature into a PDF for free—give it a try!
Add an approved stamp to highlight key details in a document with PDFgear Online Editor. Access “Add or Edit Annotations“, click “Add Stamp“, choose “Approved“ from “Standard Business“, and place it strategically.
Optionally, include a dynamic approved stamp indicating the person, date, and time.
You have many choices to add a signature slot. For a free, watermark-free, and hassle-free signature slot solution, try PDFgear Online Form Filler. Upload your PDF, access “Add and Edit Form Fields“, click “Add Signature“, select “ADD SIGNATURE“, and position the Signature Slot where needed.
Signature seals serve as a common method for document approval in professional settings, ensuring consistency but susceptible to removal. In contrast, inserting signature images offers a highly personalized, digitized version that can be securely embedded in a document, enhancing resistance to deletion.
Adding a signature stamp to PDFs can make your workflow much smoother. The above covers four free solutions for different devices and network environments.
Give PDFgear a try—it’s packed with powerful features that might just surprise you!