几秒钟即可签署任何 PDF。
绘制、输入或上传您的签名，在任意位置添加文字，然后下载——全部在浏览器中完成。您的文档绝不会离开您的设备。
我们不会要求您提供姓名、电子邮箱或账户——即使是签署文件也不需要。
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.
常见问题
Quick answers before you start — the has more.
以下部分答案仅提供英文版本——界面的其余部分支持全部 7 种语言。
我的文档会被上传到某处吗？
不会。您的 PDF 和签名完全在您的设备上处理，绝不会离开您的浏览器。
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.
这是具有法律约束力的签名吗？
PDF Sign Pad 创建的是简单的可视电子签名。它不是经认证或合格的数字签名——请参阅我们的免责声明。
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.
关闭标签页后，我的文档会怎样？
不会保留任何内容。您的文档、添加的任何文字以及签名仅存在于该会话期间浏览器的内存中——关闭标签页、刷新页面或点击"重新开始"都会将其完全释放。
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.