Sign PDF Online
Type, draw, or upload your signature, drop it anywhere on the page, and download — no account, no watermark, and your document never leaves your browser.
Drag & drop a PDF here
or browse from your device
Drag the signature to reposition it, drag the green handle to resize.
Create your signature
How-To Guides
Short, step-by-step walkthroughs for every way to sign a document with Zento.
How to Sign a PDF Online
- Upload your PDF by dragging it into the tool or clicking to browse.
- Pick a signature method — type, draw, or upload an image.
- Click "Add Signature to Page" to place it on the document.
- Drag to position and resize it to fit.
- Click "Apply & Download" to save your signed PDF.
How to Add a Typed Signature
- Open the "Type" tab in the signature panel.
- Enter your name exactly as you'd like it to appear.
- Choose from three handwriting-style fonts.
- Preview updates instantly as you type.
- Click "Add Signature to Page" when you're happy with it.
How to Draw a Signature by Hand
- Open the "Draw" tab in the signature panel.
- Use your mouse, trackpad, or finger on a touchscreen to draw.
- Click "Clear" to start over if needed.
- Click "Add Signature to Page" once you're satisfied with the result.
How to Position and Resize a Signature
- Click and drag the signature box to move it anywhere on the page.
- Drag the small green handle in the corner to resize it.
- Switch pages using the arrows if your document has more than one.
- Download once the placement looks right — changes aren't saved until you do.
A signature tool that doesn't ask for your file
No server upload
Your PDF is read and modified locally using your browser's own PDF engine — it's never transmitted anywhere, which matters for contracts and signed agreements.
No task limits
Sign as many documents as you need. There's no daily cap, no file-size gate, and no upgrade prompt.
No account needed
Open the tool, sign, download. There's nothing to create and nothing to remember.
Frequently Asked Questions
Is a signature added this way legally binding?
It functions as a visual electronic signature, similar to signing on a touchscreen. For agreements requiring a certified or qualified electronic signature under specific legal frameworks, use a dedicated e-signature service.
Does my PDF get uploaded to a server?
No. The entire process — reading the PDF, placing the signature, and generating the final file — happens inside your browser.
Can I sign a multi-page PDF?
Yes. Use the page arrows to navigate to the page you want to sign before placing your signature.
What image format should I upload for a signature?
A PNG with a transparent background gives the cleanest result, but JPG works too.
Is this tool really free?
Yes — no sign-up, no watermark, and no limit on how many documents you sign.