Sign PDF: Free Online PDF Signature Tool
Add your electronic signature to any PDF in seconds. Draw, type, or upload your signature and place it anywhere on the document. No uploads, no limits — 100% private.
Draw, Type, or Upload
Create your signature by drawing with your mouse or finger, typing your name in a signature font, or uploading an image of your signature.
Position Anywhere
Click to place your signature precisely where it needs to go. Resize and reposition on any page of the document.
100% Private
Your files never leave your device. All signing happens in your browser — no server uploads, no cloud processing.
Sign PDF
Add your digital signature with visual placement editor
Drag & drop PDF to sign
or click to select file
Visual Placement
See exactly where signature goes
Multi-page Support
Sign on any page of the PDF
Secure Signing
Processed locally on device
Best Free PDF Signature Tool Online
Need to sign a PDF? Our free PDF signature tool lets you add legally recognized electronic signatures to any document in seconds. Unlike iLovePDF or SmallPDF that require you to upload sensitive contracts and agreements to their servers, our PDF signer processes everything in your browser — your documents never leave your device. Sign contracts, agreements, tax forms, and legal paperwork with complete privacy and no daily limits.
Whether you need to sign a single NDA or put your signature on a stack of HR onboarding forms, PDF Smaller gives you three flexible ways to create your signature: draw it freehand with your mouse or touchscreen, type your name and choose from professional signature fonts, or upload an image of your existing handwritten signature. Every signed PDF is created entirely on your device, ensuring confidential documents like real estate closings, employment contracts, and financial agreements remain completely private.
How to Sign a PDF Online
How to sign a PDF in 4 simple steps:
- Upload your PDF document from your device or drag and drop it into the upload area
- Create your signature by drawing, typing your name, or uploading a signature image
- Click on the PDF page to place your signature — resize and reposition as needed
- Download your signed PDF instantly — no waiting for server processing
When You Need to Sign a PDF
Contracts & Agreements
Sign business contracts, freelance agreements, vendor terms, and service-level agreements without printing, scanning, or mailing paper documents.
Real Estate Closings
Sign purchase agreements, mortgage documents, disclosure forms, and closing statements from anywhere — no need to visit an office in person.
HR Onboarding
Sign offer letters, employment contracts, tax withholding forms, benefits enrollment documents, and company policy acknowledgments during onboarding.
NDA Signing
Sign non-disclosure agreements quickly and securely. Your confidential NDA never leaves your device, unlike tools that upload to remote servers.
School Permission Slips
Sign field trip forms, photo release waivers, medical authorization forms, and other school documents from your phone in seconds.
Government Forms
Sign tax returns, permit applications, voter registration forms, and other government paperwork electronically without printing.
Frequently Asked Questions
Is an electronic signature legally binding?
Yes. Electronic signatures are legally recognized in most countries under laws like the US ESIGN Act, EU eIDAS Regulation, and the UK Electronic Communications Act. An e-signature created with our tool carries the same legal weight as a wet-ink signature for most contracts, agreements, and forms.
How do I draw my signature on a PDF?
Upload your PDF, then select the "Draw" signature option. Use your mouse on desktop or your finger on a touchscreen to draw your signature on the canvas. Once you are happy with it, click on the PDF page where you want to place it. You can resize and reposition the signature before saving.
Can I sign multiple pages in the same PDF?
Yes! After creating your signature, you can place it on as many pages as you need. Navigate between pages using the page controls and click to add your signature to each page. You can also add different signatures or initials to different pages.
Can I add initials to a PDF as well?
Absolutely. You can create multiple signatures of different sizes. Many users create a full signature for the signature line and a smaller version for initialing individual pages. Simply draw, type, or upload a separate initials image and place it wherever needed.
Does signing change the original PDF?
No. Your original file is never modified. Our tool creates a new copy of the PDF with your signature embedded in it. The original file on your device remains untouched. The signed version is a separate download.
Can I sign a PDF on my phone?
Yes! Our PDF signer is fully mobile-friendly. On phones and tablets you can draw your signature with your finger directly on the touchscreen, which often produces the most natural-looking results. The entire signing process works in your mobile browser.
Is this PDF signing tool really free?
Yes, 100% free with no limits. Unlike iLovePDF or SmallPDF that restrict free users to a few tasks per day and require paid subscriptions for full access, you can sign unlimited PDFs without registration, without watermarks, and without any hidden fees.