About Online Gerber Viewer

🎯 Our Mission

Online Gerber Viewer is a free, lightweight, and privacy-safe online tool for viewing Gerber RS-274X files and Excellon drill files. All file processing happens locally in your browser - no data is uploaded to any server.

🌍 Why This Tool?

Gerber files are the standard output format for PCB manufacturing. Before sending your PCB files to a manufacturer, it's important to verify the design visually. This tool helps you:

📊 Key Features

• Gerber RS-274X Support - View copper layers, solder mask, silkscreen, paste, and outline
• Excellon Drill Support - View drill holes and slots
• Multi-Layer Overlay - Stack and compare multiple layers simultaneously
• ZIP Batch Import - Drag & drop ZIP files containing multiple Gerber files
• Smart Layer Detection - Automatically identifies layer type from filename
• Fully Local Processing - Your files never leave your browser

🔧 Supported EDA Software's Gerber

• KiCad
• Altium Designer
• Eagle
• OrCAD
• EasyEDA
• And many more...

🛠️ Technology Stack

This tool is built using:

• TypeScript - Type-safe JavaScript
• Vite - Fast build tool
• LeaferJS - High-performance Canvas rendering
• tracespace - Industrial-grade Gerber parsing logic
• fflate - Fast ZIP decompression

📞 Contact Us

• 📧 Email: pcbtool@outlook.com
• 🌐 Website: https://pcbtool.net
• 🌐 BUG/Feature: https://github.com/pcbtool/online-gerber-viewer.com/issues

Last Updated: May 17, 2026