PDF Tools 100% Client-Side · 0 Bytes Sent to Server Instant In-Memory Execution

Sign PDF Online (Free Electronic Signature Tool)

Free online PDF signing tool with 100% client-side privacy. Easily sign contracts, NDAs, job offers, lease agreements, and invoices directly in your web browser. Draw signatures using your mouse or touchscreen, type your legal name with customizable cursive script fonts, or upload your official company stamp. Place, scale, and apply signatures to single pages or across all document pages with zero file uploads.

100% In-Browser · Legally Binding e-Sign

Sign PDF Online Free

Draw your signature, type in elegant calligraphy, or upload your company stamp. Add signatures directly to any PDF with exact drag-and-drop placement.

1. Document Upload

Choose PDF or Drag & Drop

Supports confidential NDAs, invoices & contracts

2. Create Signature

Sign here with your mouse or fingertip

3. Page Placement & Scale

Apply Signature To:

Stamp Size140 px

Interactive Document Preview

Upload a PDF document to preview and place signatures

💡 Click anywhere on the PDF page above to instantly move the signature stamp.

Related PDF Security & Document Management Tools

Protect PDF Online

Encrypt signed contracts with passwords and prevent unauthorized viewing.

Unlock PDF Online

Remove passwords and restrictions from locked contracts or forms.

Convert PDF to Word

Convert PDF agreements and reports into editable Microsoft Word DOCX files.

Step-by-Step Instructions

Upload PDF Document

Drag and drop your contract, lease agreement, tax form, or invoice into the secure PDF signing tool.

Create or Upload Your Signature

Draw your handwritten signature with a mouse/touchscreen, type your name with aesthetic signature fonts, or upload a signature image.

Position Signature and Date Stamps

Drag, resize, and place your signature, initials, printed name, and date fields onto any page or document line.

Download Signed PDF

Export your legally compliant, signed PDF document with vector-embedded signature layers.

Key Features & Capabilities

3 versatile signature creation modes: Draw with stylus/touchscreen, Type with cursive font styles, or Upload transparent PNG signature image
Multi-page visual document viewer with precise drag-and-drop signature positioning and scaling
Add essential document stamps: Date, Initials, Checkmarks, Text Fields, and Custom Badges
Vector-grade signature embedding rendering crisp, sharp strokes at any print zoom level
Preserves original PDF text layers, fonts, form fields, and vector graphics without rasterizing pages
100% private in-browser PDF signing: confidential legal contracts and NDA agreements are never uploaded to any remote server

Frequently Asked Questions

Are electronic signatures created with this tool legally binding?

Yes. Electronic signatures created with this tool comply with the US Electronic Signatures in Global and National Commerce Act (ESIGN Act), the Uniform Electronic Transactions Act (UETA), and EU eIDAS regulations for standard electronic signatures (SES), making them legally valid for commercial contracts, leases, and agreements.

Does signing a PDF flatten or degrade the original document text?

No. The signing engine embeds your signature directly as a vector annotation layer into the PDF structure using `pdf-lib`. It leaves the underlying text, fonts, and vector illustrations completely unrasterized and sharp.

Can I save my drawn signature for signing future documents?

Yes. You can store your signature in your local browser storage (`localStorage`) for quick one-click signing across multiple documents without re-drawing.

Are my confidential legal contracts uploaded to any cloud server?

No. All PDF parsing, rendering, and signature stamping execute strictly inside your local web browser session via WebAssembly and JavaScript. No document data is ever transmitted across the internet.