PDF Signer | Digitally Sign PDF Documents Free Online
Free online pdf signer to upload your signature, place it on any page, and securely create a signed document in your browser.
Sign PDF
Add, drag, resize, and delete your signature on the document.
Sign PDF Online - Add Your Signature to a PDF
Why Use Our PDF Signature Tool?
Finalize your documents with our easy and secure tool to sign pdf online. Forget the hassle of printing, signing, and scanning. Our tool lets you add sign to pdf documents electronically, creating a professional, signed file in just a few clicks. It's the perfect way to fill and sign pdf forms, contracts, and agreements.
Upload Your Signature Image
Our tool allows you to upload an image of your own handwritten signature. For the best results, use a PNG image with a transparent background. This ensures your signature looks clean and professional when placed on any document.
Maximum Privacy with Client-Side Processing
Your privacy is our top priority. This tool operates entirely within your web browser. This means your documents and your signature image are never uploaded or sent to our servers. All processing happens directly on your device, making this one of the most secure ways to digitally sign pdf files.
Easy Placement & Resizing
You have full control over your signature. Simply drag your uploaded signature from the panel and drop it anywhere on the PDF page. You can easily resize and reposition it to fit perfectly in any signature box or line.
Free and Accessible
You can sign pdf free of charge without any limitations. Our tool is always available online, requiring no software installation or registration to sign a pdf document.
How to Sign a PDF Document
Upload PDF
Click the 'Click to upload' button or drag and drop your PDF file into the tool.
Upload Signature
In the side panel, upload an image of your signature (a transparent PNG is recommended).
Place Signature
Drag your signature from the panel onto the document. Click and drag its corners to resize and position it correctly.
Apply & Download
Click the "Apply Signature" button. Your new, signed PDF will be ready for immediate download.
"Electronic" vs. "Digital" Signatures: What's the Difference?
It's important to understand the two main types of online signatures. This tool helps you create a visual electronic signature, which is the most common and convenient type for everyday tasks.
- Electronic Signature (What this tool does): This is a visual representation of your signature placed on a document. Think of it as the digital equivalent of "pasting" your handwritten signature onto a file. It's fast, easy, and visually confirms your intent to sign. This method is perfect for 99% of daily tasks like signing off on reports, simple agreements, or permission slips.
- Digital Signature (A high-security method): This is a more complex, cryptographic signature. It involves a "digital certificate" that is unique to the signer and is verified by a third-party authority. These are often required for high-stakes legal or financial documents (like a mortgage) and typically require a paid service.
Our free and private Sign PDF tool is designed to be the perfect solution for your daily electronic signing needs, providing a secure and fast way to finalize your documents without the complexity or cost of a full digital signature service.
Pro-Tips for a Professional-Looking Signature
The quality of your signature image makes all the difference. A bad image can look pixelated and unprofessional. Here’s how to create a perfect signature for free:
The Analog Method (Pen & Paper):
- Get a clean, bright white sheet of paper (no lines!).
- Use a high-quality black pen (like a felt-tip or gel pen) to write your signature. A thin ballpoint pen will look faint and spidery.
- Take a photo of your signature in a very well-lit room or near a window. Make sure there are no shadows cast over the signature.
- Use any free photo editor to crop the image tightly around the signature and increase the contrast.
The Digital Method (Recommended):
- On your smartphone, tablet, or computer, use any free drawing app (even MS Paint).
- Select a black brush tool and draw your signature with your finger or a stylus.
The Most Important Step: When you save, save the file as a .PNG with a transparent background. This is the secret. A transparent PNG will have no white box around it, allowing your signature to sit on top of any text or line on your PDF, just like a real pen.
Your Workflow: What to Do After You Sign
Signing a document is rarely the last step. Our tools are designed to work together to complete your entire workflow.
Problem: You've signed your PDF, but the file is now too large to email.
Solution: After downloading your signed file, drop it into our Compress PDF tool. It will significantly reduce the file size without affecting the quality of your signature.
Problem: You've signed a cover letter and now you need to add it to your main resume PDF.
Solution: Take your new signed cover letter and your resume file to our Merge PDF tool. You can combine them into one single, professional application packet.
Problem: The document you just signed is highly confidential.
Solution: Before you send it, run the signed PDF through our Protect PDF tool to add a strong password. This ensures that only the intended recipient can open and view the file.
About the Online PDF Signature Tool
This tool is designed to help you electronically sign a pdf in the simplest way possible. It allows you to use a digital image of your signature, a common and widely accepted method for signing documents in the modern workplace. Whether you need to add sign in pdf for a contract or quickly fill and sign pdf online, our tool provides a secure, browser-based solution, saving you time and paper.