Free private PDF tool
Sign PDF Online Free
A PDF signer adds a visible signature to a PDF page. This tool works in your browser and creates a signed copy without certificate-based digital signing.
Use Sign PDF
Selected files stay local to this browser session.
PDF processing runs locally in your browser whenever possible. This site does not upload, store, or inspect selected files.
Quick answer
What is sign PDF online free?
A PDF signer adds a visible signature to a PDF page. This tool works in your browser and creates a signed copy without certificate-based digital signing.
Best for
- Adding a visible approval signature
- Signing forms before sharing
- Placing a signature image on a PDF
How to sign pdf
- Select one PDF file.
- Draw, type, or upload your signature.
- Choose the page, position, and size.
- Export and download the signed PDF.
Privacy and trust
Why private PDF tools matter
Uploaded tools send files away
Many online PDF tools move documents to a remote server before processing starts.
This workflow stays local
These tools process files locally in the browser where possible, so selected files stay on your device.
No account required
You can finish common PDF tasks without creating an account, entering an email, or storing documents.
Browser-based PDF tools vs uploaded PDF tools
| Feature | This Sign PDF tool | Typical upload tool |
|---|---|---|
| File handling | Processes locally where possible | Usually uploads files to a server |
| Signup | No account required | May require login for larger files or downloads |
| Downloads | Clear result download button | Can mix ads, limits, or upgrade prompts |
| Best fit | Fast private document tasks | Server-heavy batch processing or advanced OCR |
Long-tail searches this tool is built for
- add signature to PDF free
- sign PDF in browser
- visible PDF signature
- sign PDF without account
- upload signature image to PDF
- sign PDF privately
- sign PDF without uploading
- sign PDF no signup
Why use this tool
- The visible signature is added in your browser.
- No account or email is required.
- You can choose the page, position, and size before exporting.
Frequently asked questions
Does this upload my file?
No. Files are processed locally in your browser whenever the tool supports processing. Your selected PDF is not uploaded to this website.
Is this a legal digital signature?
No. This tool adds a visible signature appearance to the PDF. It does not create a cryptographic certificate signature.
Can I draw a signature on my phone?
Yes. The signature pad supports touch input on mobile browsers and pointer input on desktop.
Can I upload a signature image?
Yes. You can upload a PNG, JPG, or JPEG signature image and place it on a page.
Is the original PDF changed?
No. The tool creates a new signed copy and leaves your original local file unchanged.
Is this PDF tool free?
Yes. This PDF tool is free to use and does not require an account.
Do you upload my PDF files?
No. The tool is designed to process files in your browser where possible, so selected files stay on your device.
Can I use this on my phone?
Yes. The upload control is designed for mobile browsers on iPhone and Android as well as desktop browsers.