How to Add a Digital Signature to PDF Contracts Online Free (Legally Compliant)

Printing out an entire lease or employment contract just to ink-sign the final page and scan it back is tedious and wastes paper. With iEditPDF's Sign PDF tool, you can draw your signature using a trackpad, touchscreen, or mouse, type a cursive legal signature, or upload a photo of your paper signature, and stamp it cleanly onto any PDF page in seconds.

Verified for 2026 Portals & Workflows•100% Client-Side Privacy•Updated: 2026-09-22

Ready to start?

Use the Free Sign PDF Online

No installation, no account creation, and zero server uploads. Your files are processed securely inside your browser.

Free Forever Complete Privacy Instant Speed

Open Sign PDF Studio (100% Free)

Step-by-Step Instructions

4 Easy Steps

Upload Your PDF Contract

Open the Sign PDF tool and drop your contract or form into the workspace.

Open Sign PDF Tool Online

Pro Tip: You can navigate between pages using the thumbnail sidebar.

Create Your Signature

Click 'Add Signature'. Draw your signature with your mouse or finger, type your name to generate a cursive signature, or upload an image of your handwritten signature.

Pro Tip: iEditPDF automatically removes paper background tint from uploaded signature photos to create a clean transparent stamp.

Position and Scale Signature

Drag your signature onto the signature line. Use the corner handles to resize it to fit the dotted line perfectly.

Pro Tip: Add a date stamp or full printed name text box right next to your signature.

Save and Download Signed PDF

Click 'Save & Download' to compile the signed document into a permanent, tamper-resistant PDF ready to email.

Pro Tip: Use the 'Flatten PDF' option if you want to permanently lock the signature so it cannot be extracted.

Ready to apply these steps?

Start in the Sign PDF Studio Now

Zero account registration, zero watermarks, and 100% client-side privacy on your device.

Open Sign PDF Studio

Why Use iEditPDF for This Task?

Multiple Signature Modes: draw with mouse/stylus, type with elegant legal cursive fonts, or upload photo of ink signature

Vector Smoothing Algorithm: ensures your signature looks smooth and authentic without pixelation

Sign Anywhere: place, scale, and rotate signatures, date stamps, initials, and checkmarks on any page

100% Confidential: sensitive employment contracts and financial documents never leave your browser

Technical Walkthrough Verified

Written & Code-Audited by Vipul Ravindra Sukhdeve

VNIT Nagpur Graduate • JNV Gondia Alumnus • WebAssembly & Privacy Systems Architect

GitHub Profile Twitter / X

Frequently Asked Questions

Are electronic signatures legally binding on contracts?

Yes. Under the US ESIGN Act, EU eIDAS regulation, and India's Information Technology Act, electronic signatures carry the same legal weight as traditional handwritten ink signatures for the vast majority of commercial agreements, leases, and employment contracts.

Can I sign using my finger on an iPhone or Android phone?

Yes! iEditPDF works smoothly on mobile browsers. Simply open the tool on your phone, tap the screen to draw your natural signature with your finger, and place it directly on the document.

Does iEditPDF charge a monthly subscription like DocuSign or Adobe Sign?

No. iEditPDF is completely free with no monthly subscription fees, document quotas, or watermarks.