Sign PDF Online Free — Add Signature to PDF
Add your signature to PDF documents online. Type, draw, or upload your signature. Free, secure, and instant.
Drop your file here, or click to browse
Supports PDF, Word, JPG, PNG
Opens instantly in your browser · No upload to servers
Private & Secure
Your files are processed in your browser. They never leave your device.
Instant Results
No queues, no waiting. Get output directly in your browser.
No Signup Required
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Free to Use
Every core feature is free. No hidden paywalls.
Quick Answer
A sign pdf is a free online tool that add your signature to pdf documents online. type, draw, or upload your signature. free, secure, and instant.. Simply Upload the PDF you want to sign. No signup, no installation, no watermarks — completely free.
What is Sign PDF?
Sign PDF is a free browser-based utility that add your signature to pdf documents online. type, draw, or upload your signature. free, secure, and instant.. It operates entirely client-side, meaning your files are processed locally in your browser and never uploaded to any server. This makes it both fast and private.
ToolBox's Sign PDF helps you add your signature to pdf documents online. type, draw, or upload your signature. free, secure, and instant. in seconds. 100% free, private, and works on any device with a web browser.
How to sign pdf
Upload the PDF you want to sign
Create your signature — type, draw, or upload
Drag your signature to the desired position
Resize or rotate as needed
Click Apply & Download to save
Sign PDF works in four easy steps:
Sign PDF is designed to be intuitive. Even if you've never used a similar tool before, you'll get results in under 30 seconds.
Upload the PDF you want to sign
Create your signature — type, draw, or upload
Drag your signature to the desired position
Resize or rotate as needed
Click Apply & Download to save
Why use ToolBox's Sign PDF?
Free, private, and built for everyday tasks. Here's why Sign PDF is useful:
Sign documents without printing and scanning
Legally valid digital signatures
No Adobe Acrobat subscription needed
Sign on mobile, tablet, or desktop
Your signature stays private and secure
Key Facts
| Tool Name | Sign PDF |
|---|---|
| Category | PDF Tools |
| Price | Free |
| Sign-up Required | No |
| Installation | None — browser-based |
| File Retention | None — client-side processing |
| Supported Files | Multiple formats |
| Device Support | Desktop, Mobile, Tablet |
| Watermark | No watermark |
| Output Quality | High — original quality preserved |
Pros & Cons
Pros
- Sign documents without printing and scanning
- Legally valid digital signatures
- No Adobe Acrobat subscription needed
- Sign on mobile, tablet, or desktop
- Your signature stays private and secure
Cons
- Requires an internet connection
- Large files may take longer to process
- Advanced features found in paid software may be missing
- Batch processing limited compared to desktop tools
Popular ways to use Sign PDF
Sign PDF is versatile. Here are the most common scenarios where it shines:
Sign contracts and agreements
Add signature to application forms
Sign NDAs and legal documents
Approve invoices and purchase orders
Sign consent forms and waivers
Key features of Sign PDF
Everything you need, nothing you don't. Sign PDF is packed with useful features:
People Also Ask
Is the digital signature legally valid?
Yes, our signatures are legally valid for most business and personal documents under ESIGN and eIDAS regulations. For high-security needs, consider certified digital signatures.
Can I add multiple signatures?
Yes, you can add unlimited signatures to any document. Place them on different pages or multiple locations on the same page.
Does the signature look professional?
Absolutely. Choose from elegant cursive fonts or draw your own signature for a natural look. You can also upload a transparent PNG image of your signature.
Can I sign on my phone?
Yes, our tool is fully responsive and works on all devices including smartphones and tablets. Touch screens make drawing signatures especially easy.
Will my signature be saved?
No, for your privacy we do not save signatures on our servers. You create a new one each time. Your document is processed entirely in your browser.
What file formats are supported for signature images?
You can upload PNG, JPG, and WEBP images. For best results, use a transparent PNG with your signature on a clear background.
Can I resize or rotate my signature?
Yes, after placing your signature you can drag to reposition, drag corners to resize, and use the rotate handle to adjust the angle.
Is there a size limit for PDF files?
You can sign PDFs up to 50MB. Most standard documents are well under this limit.
Can I remove a signature after applying?
Once you download the signed PDF, the signature becomes part of the document. Before downloading, you can delete and reposition signatures freely.
Are electronic signatures accepted by banks?
Most banks and financial institutions accept electronic signatures for standard forms. Check with your specific institution for their policy.
What is Sign PDF?
Sign PDF is a free online utility that add your signature to pdf documents online. type, draw, or upload your signature. free, secure, and instant.. It helps users complete this task quickly without installing any software.
Is Sign PDF free to use?
Yes, ToolBox's Sign PDF is completely free to use. There are no hidden charges, no premium tiers, and no usage limits.
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