Sign PDF Online
Add your signature to any PDF document quickly and securely. Draw, type, or upload your electronic signature directly in your browser.
Add Your Signature to a PDF
Gone are the days of printing out contracts, signing them with a pen, scanning them back into your computer, and emailing them. With our Sign PDF tool, you can apply a professional electronic signature to your documents in seconds.
Whether you're signing client paperwork, approving internal documents, finalizing agreements, or completing applications, our tool provides a seamless, high-quality signing experience that preserves your original document's formatting.
How to Sign a PDF
Upload your PDF
Select or drag your document into the tool to load it securely into your browser.
Create Your Signature
Choose to draw your signature, type your name, or upload an existing signature image.
Place and Resize
Navigate to the correct page, drag your signature into position, and scale it to fit.
Download
Click apply and immediately download your newly signed PDF document.
Create Your Signature
Draw Signature on PDF
Use your mouse, trackpad, or touchscreen to draw your natural signature directly onto our digital canvas. We apply stroke smoothing to make it look clean and professional.
Type Signature on PDF
Don't have a touchscreen? Simply type your name. Our tool will automatically convert your typed text into a beautiful, cursive-style electronic signature.
Upload Signature to PDF
If you already have a scanned copy of your signature saved as a PNG or JPG, you can upload it. We recommend transparent PNGs for the most natural document integration.
Place and Customize Your Signature
Documents come in all shapes and sizes, and signature lines are rarely in the same place. Once you've created your signature, our tool loads an interactive preview of your PDF.
You can navigate through multi-page documents to find exactly where you need to sign. Once on the correct page, simply click and drag your signature to the precise location. A convenient resize handle allows you to scale the signature up or down, ensuring it perfectly fits the designated signature box or line without obscuring underlying text.
Electronic Signature vs Digital Signature
It is important to understand the terminology when signing documents online:
- Electronic Signature: This is a visual representation of your signature applied to a document (like an image of your signature). The MintSaaS tool creates standard electronic signatures. They are widely accepted for most standard business agreements, applications, and forms.
- Digital Signature: This refers to a specific cryptographic operation backed by a Public Key Infrastructure (PKI) and digital certificates. It cryptographically binds an identity to the document and mathematically guarantees the document hasn't been tampered with.
Note: Legal requirements vary significantly by jurisdiction and document type (e.g., real estate transfers or wills often have strict requirements). Always verify that a standard electronic signature is legally valid for your specific use case.
Privacy and File Handling
Your signature and documents are highly sensitive. MintSaaS processes your document and applies your signature locally inside your web browser. We do not permanently store your documents or signature images on our servers. Once you download your signed PDF and refresh the page, your data is cleared.
Frequently Asked Questions
Can I sign a PDF online?
Yes. Our online tool allows you to add an electronic signature directly to your PDF document from any device without installing software.
Can I draw my signature?
Yes, you can use your mouse, trackpad, or touchscreen to draw a custom signature directly onto our signing canvas.
Can I type my signature?
Yes, if you prefer not to draw, you can type your name and we will generate a clean, cursive-style electronic signature for you.
Can I upload an existing signature?
Yes. You can upload an image (PNG or JPG) of your actual signature. For the best visual results, we recommend using a transparent PNG.
Can I resize my signature?
Absolutely. Once your signature is placed on the document preview, you can drag its corners to resize it precisely to fit the designated signing line.
Can I move my signature?
Yes. Simply click and drag your signature to reposition it anywhere on the selected PDF page before finalizing.
Does signing change the original PDF?
The existing text, images, and layout of your original PDF remain perfectly intact. We only add the signature as an overlay on top of your existing document.
Is this a digital signature?
No. This tool creates an electronic signature—a visual representation of your signature on the page. It does not apply a cryptographic, certificate-backed digital signature (PKI). Please check your local jurisdiction's requirements to ensure electronic signatures are legally valid for your specific document type.
Are my signature and PDF stored permanently?
No. Your PDF and signature are processed securely within your browser. We do not permanently store your documents, signature drawings, or typed text.
Can I sign a password-protected PDF?
If a PDF requires a password to open or has editing restrictions, you will need to unlock it first. You can use our Unlock PDF tool to remove authorized restrictions before signing.
Will signing invalidate an existing digital signature?
Yes. If your document already contains a cryptographic digital signature, editing it to add a visual signature will generally invalidate the mathematical integrity of the original cryptographic signature.