100% Private & Secure

Sign PDF
Add Signature to PDF

Draw or type your signature and place it anywhere on your PDF. Free, fast, and completely private — your file never leaves your device.

Draw or type signaturePlace anywhere on pageMultiple signature stylesNo upload required

Step 1 of 4: Upload

Drop your PDF here

or click to browse files

About

What Is Sign PDF?

Sign PDF lets you add a handwritten or typed signature to any PDF document — directly in your browser. Upload a PDF, create your signature by drawing on a canvas or typing your name in a handwriting-style font, position it on the exact page and location, and download the signed PDF. No printing, scanning, or mailing required.

The tool processes everything on your device. Your PDF is never uploaded to a server, and your signature data stays private. It uses pdf-lib to embed the signature as a PNG image at the coordinates you choose, so the result is a standard PDF that can be opened anywhere.

Use it to sign contracts, invoices, consent forms, school documents, or any PDF that needs your written approval. The multi-step flow guides you from upload to signed download in under a minute.

Features

Features of Sign PDF

Draw or type a signature and place it on any page of your PDF

Draw Signature

Use your mouse or touchscreen to draw a freehand signature on an HTML5 canvas with adjustable stroke color and width.

Type Signature

Type your name and choose from cursive, bold script, or elegant font styles. Preview your typed signature before applying.

Place on Any Page

Navigate through PDF pages, click to position, and drag your signature to exactly the right spot on any page.

Adjustable Size

Scale your signature up or down with a size slider so it fits perfectly on the document without overlapping other content.

No Upload Required

Your PDF and signature are processed entirely on your device. Nothing is sent to any server — complete privacy guaranteed.

Private & Secure

All processing happens in your browser. Your documents and signatures never leave your device, making it safe for sensitive files.

How to use

How to Sign a PDF Online

Four simple steps — no install, no sign-up

01
01

Upload Your PDF

Drag and drop a PDF file onto the upload area, or click to browse and select the document you want to sign.

02
02

Create Your Signature

Draw your signature with mouse or touch, or type your name and pick a handwriting-style font. Choose color and width.

03
03

Place on the Page

Navigate to the correct page, click to position your signature, then drag and resize it until it fits perfectly.

04
04

Download Signed PDF

Click Sign & Download. The signature is embedded into the PDF and your signed document downloads automatically.

Use cases

Use Cases for Sign PDF

When and why to sign a PDF online

Contracts & Agreements

Sign contracts, NDAs, and agreements quickly without printing. Add your signature to the signature line and send the signed PDF back.

Invoices & Receipts

Add an authorized signature to invoices, purchase orders, or receipts to formalize them before sending to clients or suppliers.

School & University Forms

Sign permission slips, enrollment forms, or academic documents from home without needing to visit the office in person.

Real Estate Documents

Sign rental agreements, lease contracts, or property inspection reports digitally before sending to landlords or agents.

HR & Compliance Forms

Sign onboarding documents, policy acknowledgments, or compliance forms without printing, scanning, and re-uploading.

Personal Letters & Approvals

Add a personal signature to recommendation letters, consent forms, or any PDF that needs your written approval.

Compare Plans

Free vs Paid — Sign PDF

Get started free, upgrade when you need more power.

Feature
Free
Paid
Daily usage
5 uses/day
Unlimited
File size limit
10 MB
Up to 500 MB
All core features
No software installation
Works on any device
Files stay on your device
Batch processing
Priority support
Upgrade — starting at $9.99/mo
Upgrade to Full Version

Unlock the Full Power of Sign PDF

Remove daily limits, process larger files up to 500 MB, enable batch processing, and get priority support.

Buy Full Version — $9.99/moor $500 enterprise

PDF Tools includes:

  • 21 PDF tools included
  • Unlimited daily uses
  • 100 MB file size limit
  • Batch processing
  • Sign, Redact, OCR, Watermark
  • All export formats

Also available in the All Tools Bundle

FAQ

Frequently Asked Questions

Common questions about the Sign PDF tool

Q1. Is the Sign PDF tool free?
Yes. You can sign as many PDFs as you like without creating an account or paying. The tool is completely free with no hidden fees or usage limits.
Q2. Are my files uploaded to a server?
No. Your PDF and signature are processed entirely on your device using client-side JavaScript. Nothing is sent to our or any other server, so your documents stay private.
Q3. Can I draw my signature on a phone or tablet?
Yes. The drawing canvas supports touch events, so you can draw your signature with your finger or a stylus on any touchscreen device.
Q4. What signature styles are available?
You can draw a freehand signature with adjustable color (black, blue, red) and stroke width (1–5px). Alternatively, type your name and choose from Cursive Italic, Bold Script, or Elegant handwriting-style fonts.
Q5. Can I place the signature on any page?
Yes. After creating your signature, use the page navigation to select any page in the PDF. Click on the page to position the signature, drag to reposition, and use the size slider to scale it.
Q6. Does signing change the original PDF?
No. The original file is never modified. The tool creates a new copy of the PDF with the signature embedded and downloads it. Your original file remains untouched.
Q7. Can I sign password-protected PDFs?
No. The tool cannot open encrypted or password-protected PDFs. Use our PDF Unlocker tool first to remove the password, then sign the unlocked PDF.
Q8. Is this a legally binding electronic signature?
This tool adds a visual signature image to a PDF. It is not a certified digital signature with cryptographic verification. For legally binding e-signatures with audit trails, consider a dedicated e-signature platform. However, many informal agreements accept a visual signature on a PDF.
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