Firma cualquier PDF en segundos.
Dibuja, escribe o sube tu firma, añade texto donde quieras y descarga el archivo — todo desde tu navegador. Tu documento nunca sale de tu dispositivo.
No te pedimos tu nombre, tu correo electrónico ni una cuenta — ni siquiera para firmar.
Why signing locally is safer
Leases, NDAs, offer letters, invoices, and medical or consent forms are exactly the kind of documents you don't want sitting on someone else's server. PDF Sign Pad signs them the same way it signs anything else: entirely on your own device. Your document and signature are never uploaded, so there's no server copy to leak, get breached, or hand over in a data request — just your document, signed, and downloaded straight back to you.
Common uses
A freelancer signing a client NDA before starting a new project — one file, no account to set up first. A job-seeker signing and returning an offer letter the same day it arrives, from a phone if that's what's handy. A parent filling out and signing a school consent form between errands. A privacy-conscious professional adding a signature to an internal confidential form they'd rather not upload anywhere. Different documents, same job: sign it, download it, done — no account required, and nothing left behind on a server in between.
Preguntas frecuentes
Quick answers before you start — the has more.
Algunas respuestas a continuación se muestran solo en inglés — el resto de la interfaz está disponible en los 7 idiomas admitidos.
¿Se sube mi documento a algún sitio?
No. Tu PDF y tu firma se procesan por completo en tu dispositivo y nunca salen de tu navegador.
Can I sign a PDF online for free — without creating an account?
Yes. PDF Sign Pad is free to use, with no account, no sign-up, and no email address required — not even to save a signature for later. Open the tool, drop in your PDF, sign it with a drawn, typed, uploaded, or saved signature, and download the finished file. Nothing about your document is uploaded anywhere in the process — everything happens in your browser. See the for exactly how it works.
¿Es esta una firma legalmente vinculante?
PDF Sign Pad crea una firma electrónica visual simple. No es una firma digital certificada o cualificada — consulta nuestro Aviso legal.
Does signing create a new PDF, or change my original file?
Signing never touches your original file. PDF Sign Pad only ever works with the copy loaded into your browser's memory — the file already saved on your device or in the cloud is untouched unless you choose to overwrite it yourself. When you click Download, the app "flattens" your signature and any text you've added — permanently baking your marks into the pages — and gives you a brand-new, finished PDF to save wherever you like. See the for more on how this works.
¿Qué pasa con mi documento después de cerrar la pestaña?
No se guarda nada. Tu documento, cualquier texto que añadas y tu firma solo existen en la memoria de tu navegador durante esa sesión — cerrar la pestaña, actualizar la página o pulsar "Empezar de nuevo" los elimina por completo.
From the blog
Guides on signing, saving, and filling PDFs — written in plain language, and checked against the real product before we publish.
Is a Simple Electronic Signature Legally Binding?
You've just signed a document with a drawn, typed, or uploaded mark — but is it actually binding? A plain-language guide to what makes an electronic signature legally recognized, and the specific situations where a simple e-signature isn't enough.
Is It Safe to Sign a PDF Online? How PDF Sign Pad's No-Upload Design Works
Where does your file actually go when you sign it online? Here's the honest architectural difference between a server-side signer and an in-browser one — and a checklist for judging any tool, including this one.