Intosoft Tools

Sign PDF Documents

Add your signature to PDF documents. Draw or type your signature.

Drop a PDF file here or click to browse

PDF files only

All processing happens in your browser. Files and signatures never leave your device.

Instant Results
100% Private
No Installation
Free by Intosoft

Sign PDF Online Free

Add your signature to any PDF document online. Draw, type, or upload your signature. Free electronic PDF signing tool — no installation needed.

How It Works

Upload your PDF file. Create your signature by drawing with your mouse/touch, typing your name (converted to a signature font), or uploading a signature image. Place the signature anywhere on the PDF, resize it, and download the signed document.

Common Use Cases

  • Signing contracts, agreements, and legal documents electronically
  • Adding your signature to filled-out PDF forms
  • Signing permission slips and school documents remotely
  • Quickly signing and returning documents without printing

Frequently Asked Questions

In many jurisdictions, electronic signatures are legally binding. However, for high-stakes legal documents, consider using a qualified digital signature service.

No, all processing happens locally in your browser. Your PDF is never uploaded to our servers.

Yes, you can place as many signatures as needed on different pages or positions within the same PDF.

Yes, your drawn or typed signature can be saved in the browser for reuse on future documents. No need to redraw it each time.

Yes, you can add text fields including date, name, and title alongside your signature on the document.

Yes, you can draw signatures using your finger on touch screens. The tool is fully responsive and works on phones and tablets.

Electronic signatures are simple images/drawings of your signature. Digital signatures use cryptographic certificates for tamper-proof, legally binding verification.