DocomintAssinar PDF
Desenhe ou digite uma assinatura e coloque-a em um PDF, totalmente no seu navegador.
Drop your PDF here
or choose a file from your device
Your signature
What is a Assinar PDF?
Signing a PDF here means drawing or typing your signature and dragging it onto the page — the same visual result as printing a document, signing it by hand, and scanning it back in, just without leaving your browser. It's meant for informal or personal use, not as a certificate-based digital signature.
How to use the Assinar PDF
- Add a PDF file, then draw or type your signature
- Drag it onto the page and position it
- Download the signed PDF
Example
Typing "Alex Chen" in a script font, positioning it over a contract's signature line, and downloading the result places that exact image where you dropped it, permanently part of the page.
Why use Assinar PDF
Draw or type your signature
Sign naturally with a mouse, trackpad, or touchscreen, or type your name in a script font instead.
Position, resize, and move it freely
Click on the page to place your signature, then drag it or resize it before downloading.
Reuse it next time
Your last signature is saved in this browser, so you're not redrawing it on every document.
What can you create?
Sign a contract without printing it
Place your signature directly on a PDF instead of printing, signing by hand, and scanning it back in.
Countersign a returned document
Add your signature to a form or agreement someone else already filled in or signed.
Sign a form on your phone or tablet
Draw a natural signature with a finger or stylus on a touchscreen, right in the browser.
Frequently asked questions
Is my PDF uploaded anywhere?
No — Assinar PDF runs entirely in your browser using JavaScript/WebAssembly. Your PDF is never sent to a server.
Is there a file size limit?
Free use covers files up to 100MB per file; signing up for Pro raises that to 500MB.
Is this a legally binding e-signature?
No. This draws an image of your signature onto the page — it's a visual mark, not a certificate-based digital signature, and it doesn't verify identity or create the kind of audit trail a legally binding e-signature service provides.
Can I save my signature to reuse it on future documents?
Not currently — each session starts fresh, so you'd draw or type your signature again for a new document. Nothing about your signature is stored between visits.
Can I draw a natural-looking signature on a phone or tablet?
Yes — the draw option responds to touch input the same way it does to a mouse, so a finger or stylus on a touchscreen device works fine.