All tools

Sign PDF

Add your digital signature to PDF documents.

Files deleted in 60 min
Fast processing
No signup required
1
Upload
Drag & drop or browse files
2
Edit
Use the interactive editor
3
Download
Get your result in seconds

About Sign PDF

Socera's PDF signing tool gives you a complete interactive signing experience right in your browser. Draw, type, or upload your signature, then drag it anywhere on the page with pixel-perfect precision. Add initials, dates, checkboxes, and text fields. Resize and rotate elements with handles. The result is a professionally signed PDF that looks like it was done in Adobe Acrobat — all free, no signup, no watermarks.

How to Sign a PDF Online

  1. 1
    Upload your PDF

    Drop your PDF document onto the page. Contracts, forms, agreements — any PDF works.

  2. 2
    Add your signature

    Draw your signature with your mouse or touchscreen, type it in a signature font, or upload a signature image. Resize, rotate, and drag it to exactly where it belongs.

  3. 3
    Download the signed PDF

    Download your legally-signed PDF. Your signature is embedded directly in the document.

Frequently Asked Questions

How do I sign a PDF document online for free?

Upload your PDF to Socera's Sign PDF tool. You can draw your signature, type it, or upload a signature image. Drag it to the correct position on the page, resize as needed, and download your signed PDF.

Is a digital signature on a PDF legally valid?

Electronic signatures are legally valid for most personal and business agreements in the US, EU, and many other jurisdictions under laws like the ESIGN Act and eIDAS. For highly regulated industries, consult a legal professional about qualified electronic signature requirements.

Can I add my signature to multiple pages?

Yes. You can duplicate your signature across multiple pages and place initials, dates, and signature fields independently on each page.

Can I sign PDFs on my phone?

Yes. The signature editor fully supports touch and stylus input on iOS and Android browsers. Sign documents with your finger directly on the PDF.

Can I save my signature for future use?

Your signature is temporarily saved for the duration of your session, allowing you to place it multiple times. For privacy, it is cleared when you close the tab.

What signature formats does Socera support?

You can draw a freehand signature, type your name in one of several signature fonts, or upload a PNG/JPG image of your existing signature.

Related Tools

Part of PDF Tools on Socera - free, private, no signup required.