E-Sign PDF Free Online - Sign PDF Documents Secure

Welcome to the easiest and most secure way to sign PDF files online. Standard web e-sign services require you to upload your sensitive contracts, leases, and signatures to their external cloud servers, raising security risks. Jetpap processes your files entirely securely, giving you a 100% private, serverless solution.

Introduction & Overview

Whether you are signing an employment contract, confirming a business NDA, finalizing a rental lease, or approving an invoice, printing out documents just to sign them physically is outdated.

Our **Free Online PDF E-Sign Tool** makes signing easy. Running entirely inside your web browser, it allows you to sign documents and fill forms without printing anything. You can draw signatures, type cursive scripts, stamp dates, and fill checkboxes on any device.

Core Features & Capabilities

Our local e-sign tool provides professional features for your digital document workflows:

• Natural Drawing Pad: Use your mouse, trackpad, or touchscreen to draw a smooth, natural-looking signature. Customize line colors using built-in swatches.
• Handwritten Font presets: Type your name and convert it into a cursive signature using elegant calligraphy font options (Great Vibes, Caveat, Playball, Marck Script).
• Signature Image Upload: Upload an image of your physical signature (JPG/PNG) and place it directly onto the document.
• Form Fields Panel: Insert custom text fields, add single-click date stamps, or use checkmarks and crossmarks to fill checkboxes.
• Interactive Overlay Editor: Position placed elements precisely by dragging, resizing, or deleting overlays.
• Scroll View Rendering: Browse pages in a clear vertical workspace, making it easy to sign multi-page documents.

How to Use: Step-by-Step Guide

Sign your PDF documents in five simple steps:

1. Upload PDF: Click the drag box to select a PDF document, or drag and drop your file directly onto the page.
2. Create Your Signature: Use the Draw, Type, or Upload tabs in the sidebar to build your signature, then click "Save."
3. Place Your Signature: Click your saved signature in the gallery list, then click anywhere on the PDF pages to place it.
4. Fill Form Fields (Optional): Click the Text Field, Date, Checkmark, or Cross buttons, then click on the PDF to place them. Drag or resize the fields as needed.
5. Download Your Signed File: Review your placements, then click **Download Signed PDF** to save the finished document.

The Technology and Logic Behind It

Jetpap's E-Sign tool is built using a serverless approach. It uses **PDF.js** to parse your file and render its pages onto HTML5 canvas elements.

When you place an item, the app tracks its coordinates relative to the page size. When you click download, the app uses **pdf-lib** to modify the PDF's binary data securely. It embeds your signatures as PNG image streams, draws form fields, and saves the modified byte arrays. Because the entire pipeline runs inside your browser sandbox, your sensitive files never leave your device.

Key Benefits of Our Tool

• 100% Secure Privacy: processing files securely ensures your documents and signatures are never exposed to remote servers.
• Versatile Signature Options: Draw, type cursive, or upload images to match your preferred signing style.
• Free & Unlimited: Sign as many documents as you need for free, with no page limits or watermarks.
• Offline Availability: Once the page is loaded, you can sign documents offline.