About PDF Electronic Signature Tool
Electronic Signature (eSignature) tool enables browser-based signing of PDF documents without desktop software or cloud uploads. Supporting three signature creation methods—draw with mouse/touchscreen, type with font customization, or upload existing signature images—users complete legal document workflows entirely client-side with complete privacy. The tool uses pdf-lib to embed signatures as images on specified pages with configurable positioning.
This solution serves remote workers, freelancers, small businesses, and individuals requiring quick document signing without Adobe subscriptions or third-party eSignature services. Whether signing contracts, approving invoices, authorizing forms, or acknowledging agreements, the converter delivers instant signed PDFs suitable for email distribution, portal uploads, and regulatory compliance in jurisdictions accepting electronic signatures.
Technical Capabilities
- ▸Drawing Canvas Signature: HTML5 canvas element captures mouse movements or touch gestures. Supports pen color selection, line thickness adjustment (thin/medium/thick), and real-time preview. Clear function resets canvas for corrections.
- ▸Typed Signature with Fonts: Four font styles available: Script (Brush Script MT), Formal (Georgia), Casual (Comic Sans), Classic (Times Roman). Text input converts to canvas rendering for consistent PDF embedding. Live preview shows exact appearance.
- ▸Upload Signature Image: Accepts image files (JPG, PNG, GIF) and converts to PNG via canvas for consistent embedding. Recommends PNG with transparent background for professional appearance. Automatic scaling maintains aspect ratio.
- ▸Flexible Page Targeting: Apply signature to first page (cover letters), last page (standard contracts), or all pages (each page attestation). Configurable positioning: bottom-right, bottom-left, or centered.
- ▸Touch Device Support: Canvas implements touch event handlers (touchstart, touchmove, touchend) for tablets and smartphones. Prevents default scroll behavior during signature drawing. Coordinate scaling ensures accurate signature capture.
- ▸PNG Embedding via pdf-lib: Signature canvas/image converts to PNG dataURL, then embedded into PDF using pdf-lib's embedPng method. Automatic scaling (0.5×) prevents oversized signatures. Maintains transparency for professional integration.
- ▸Client-Side Processing: All signature creation and PDF embedding occurs in browser JavaScript. Zero network requests for signature data—complete HIPAA/GDPR privacy. No server-side signature storage or logs.
- ▸Multi-Page Document Support: Handles PDFs with unlimited pages. Signature loop iterates through target pages efficiently. Progress indicator shows completion percentage during processing.
Professional Use Cases
Remote Work Contracts
Freelancers and remote employees sign employment contracts, NDAs, and service agreements received via email without printing. Enables instant contract execution across time zones.
Invoice and Purchase Order Approval
Managers approve invoices, purchase orders, and expense reports with electronic signatures. Maintains audit trail without scanning physical signatures.
Legal Document Execution
Sign lease agreements, settlement agreements, and authorization forms where jurisdictions accept electronic signatures. Faster than postal delivery, more professional than scanned documents.
Healthcare Consent Forms
Patients sign treatment consent, HIPAA authorization, and medical history forms on tablets at clinics or via patient portals. Reduces paperwork while maintaining compliance.
Real Estate Transactions
Buyers and sellers execute offers, disclosures, and contingency waivers electronically during fast-moving real estate negotiations. Enables same-day document turnaround.
Educational Enrollment Forms
Parents sign school enrollment forms, permission slips, and acknowledgment documents digitally. Students electronically sign academic integrity pledges and internship agreements for institutional records.