Sign PDFs on Windows

Sign any PDF on your Windows PC or laptop without installing Adobe Acrobat or any other software. SigPDF works directly in Chrome, Edge, Firefox, or any browser on Windows 10 and Windows 11.

No software to installChrome, Edge & FirefoxNo Adobe neededFrom €2.08/month

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Sign PDFs on Windows Without Adobe Acrobat

Windows does not include a built-in tool for signing PDF documents. Microsoft Edge can display PDFs and add basic annotations, but it does not offer a proper signature feature. Most Windows users turn to Adobe Acrobat for PDF signing, but that requires a paid subscription starting at $12.99 per month, plus a large software installation. SigPDF provides a simpler, faster alternative. It runs entirely in your web browser — no download, no installation, no Adobe ID required. Open SigPDF in Chrome, Edge, Firefox, Brave, or any browser on your Windows PC, upload your PDF, and add your signature in seconds.

SigPDF offers three ways to create your signature on Windows. You can draw it using your mouse or touchpad, which works well for quick signatures. If you have a Windows tablet or a touchscreen laptop like a Microsoft Surface, you can draw with your finger or a stylus for a more natural-feeling signature. Alternatively, you can type your name and choose from several handwriting-style fonts that look like a real signature. The third option is to upload an image of your existing signature, which is useful if you have a scanned signature or company stamp that you regularly use on documents.

Step-by-Step: Sign a PDF on Windows

  1. Open Chrome, Edge, Firefox, or any browser on your Windows PC
  2. Navigate to SigPDF and drag your PDF into the editor, or click to browse
  3. Scroll to the page where your signature is needed
  4. Draw your signature with your mouse, touchpad, or touchscreen — or type your name or upload a signature image
  5. Click on the document to place your signature, then drag to reposition or resize
  6. Add dates, initials, text, or additional signatures as required
  7. Click Download to save the signed PDF to your Windows PC

Privacy: Files Stay on Your PC

SigPDF processes PDF documents entirely within the browser. Your files are never uploaded to a remote server. This client-side approach means your confidential business contracts, legal documents, and personal files remain private on your Windows PC. It also means SigPDF works even in corporate environments where IT policies restrict which software can be installed. Since SigPDF is just a website, no admin permissions are needed.

Frequently Asked Questions

Do I need to install Adobe Acrobat to sign PDFs on Windows?
No. SigPDF works entirely in your browser. You do not need Adobe Acrobat, Adobe Reader, or any other software installed on your Windows PC. Just open SigPDF in Chrome, Edge, or Firefox and start signing.
Does SigPDF work on Microsoft Edge?
Yes. SigPDF is fully compatible with Microsoft Edge, which comes pre-installed on Windows 10 and Windows 11. It also works in Chrome, Firefox, Brave, Opera, and any other modern browser.
Can I use SigPDF on a Windows touchscreen device?
Yes. If you have a Windows tablet, Surface device, or touchscreen laptop, you can draw your signature with your finger or a stylus directly on the screen. SigPDF detects touch input automatically.
Do I need admin permissions to use SigPDF on a work PC?
No. SigPDF is a website that runs in your browser, so no software installation or admin permissions are required. This makes it ideal for corporate environments where IT restricts which applications can be installed.
Is my PDF uploaded to a server when I sign on Windows?
No. SigPDF processes your PDF entirely within your browser using client-side JavaScript. Your files never leave your Windows PC — no upload, no cloud storage, no third-party access. This makes it safe for signing sensitive contracts and legal documents.
Which Windows version does SigPDF require?
SigPDF works on any version of Windows with a modern browser installed — Windows 10, Windows 11, and even Windows 8.1. As long as Chrome, Edge, or Firefox is up to date, SigPDF will work.
Is a Windows-signed PDF legally valid?
Yes. Legal validity depends on intent and consent, not the operating system or browser used. An electronic signature created on Windows with SigPDF is legally recognized under the US ESIGN Act, EU eIDAS Regulation, and equivalent laws in the UK, Canada, and Australia.

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