Professional Invoice Generator - 20 Templates, Dual Storage, Business Intelligence, SaaS Ready

Professional Invoice Generator – Built with Next.js 14

A modern, full-featured invoice generator built with Next.js 14, TypeScript, and Tailwind CSS. Create professional invoices with advanced features like cloud sync, digital signatures, watermarks, and comprehensive client management.

Template Samples

Sample Features Screens

Key Features

20 Professional Templates

• Modern, responsive designs optimized for print and digital
• Multiple color schemes (Slate, Moss, Wine variants)
• Real-time preview with live editing
• Mobile-first approach with A4 compliance

Dual Storage System

• Local Mode: Browser-based storage (free with ads)
• Cloud Mode: Supabase integration with cross-device sync (premium)
• Seamless data migration between modes

Advanced Security

• Digital signatures (draw, upload, or type)
• Professional watermarks (mathematical & rubber stamp)
• Password protection with strength validation
• Multi-layer document security

Smart Client Management

• AI-like client detection and autocomplete
• Revenue tracking and analytics
• Client database with history
• Conflict resolution for duplicates

Business Intelligence

• Real-time analytics dashboard
• Revenue trends and forecasting
• Invoice status tracking
• Tax breakdown and reporting

Monetization Ready

• Stripe subscription integration
• Freemium business model
• Google AdSense integration
• Professional billing portal

Complete Invoice Features

• Real-time editing with live preview
• Multiple export formats (PDF, Excel, CSV, JSON)
• Email attachments and direct email integration
• Data import from CSV, Excel, and JSON files
• Bulk operations and batch processing
• Status tracking (Unpaid, Paid, Overdue, Partially paid, Refunded)
• Recurring invoice support
• Multi-currency support (10+ international currencies)
• Tax management (GST, VAT, Sales Tax)
• Shipping calculation
• Late fee handling

Technical Specifications

• Framework: Next.js 14 with App Router
• Language: TypeScript for type safety
• Styling: Tailwind CSS with custom design system
• State Management: Zustand with persistence
• Database: Supabase (PostgreSQL)
• Payments: Stripe integration
• PDF Generation: Pdf Generation(server-side)
• Authentication: Supabase Auth

What’s Included

• Complete source code
• 20 professional invoice templates
• Complete database schema (SQL file)
• Environment configuration template
• Comprehensive documentation guides
• Installation guide
• Troubleshooting guide
• Feature documentation
• AdSense setup guide

Perfect For

• Freelancers: Quick invoice creation and sending
• Small Businesses: Multi-user capability (cloud mode)
• Agencies: Multiple client management
• SaaS Entrepreneurs: Ready-to-launch platform
• Developers: Modern, scalable codebase

Quick Installation (5 Minutes)

1. Download and extract files
2. Run: npm install
3. Copy .env.example to .env.local
4. Run: npm run dev
5. Open: http://localhost:3000

Browser Support

Chrome 90+, Firefox 88+, Safari 14+, Edge 90+, Mobile browsers (iOS Safari, Chrome Mobile)

Support & Updates

• Support provided within 2 working days
• Free updates and bug fixes
• Comprehensive documentation included
• Installation assistance available

Built with love for modern businesses and freelancers. Professional invoicing made simple, secure, and scalable.