Introduction

LED.FYI is a web-based tool for planning, configuring, and visualizing LED screen installations. It helps LED technicians and designers go from equipment selection through to final documentation — all in the browser.

What You Can Do

• Plan installations — Define screens, choose panel types and processors from a built-in equipment library
• Visualize setups — Preview your configuration in 2D layout, 3D perspective, and LED mapping views
• Configure wiring — Set data paths, assign strings to processor ports, and plan power distribution
• Generate documentation — Export bills of materials, cable schedules, and professional PDF paperwork
• Test and verify — Use built-in test patterns including SMPTE bars, chroma subsampling tests, and panel mapping overlays
• Share with clients — Create shareable project links with optional password protection

Core Concepts

Before diving in, here are the key concepts you'll work with:

Screens

A screen is a grid of LED panels. You define how many panels wide and high, and what panel type to use. A project can have multiple screens (e.g., a main wall and side screens).

Panels

Panels are the individual LED modules that make up a screen. Each panel type has a pixel pitch, resolution, physical size, and power rating from the equipment library.

Processor Canvas

A processor canvas represents a video processor and its outputs. You select a processor model, configure its operating parameters (bit depth, frame rate), and assign screens to it.

Strings

A string is a chain of panels connected to a single processor output port. The number of panels per string depends on the processor's pixel capacity at your chosen bit depth and frame rate.

Surfaces

Surfaces are the video content layers that get mapped onto your screens. A surface can display test patterns, video files, images, or nothing at all.

Outputs

Outputs are the video signals going into your processor. Each output has a resolution (e.g., 1920x1080) and surfaces are positioned within it.

Getting Started

The fastest way to start is with the New Project Wizard, which walks you through the entire setup in six steps. You can also build a project manually using the sidebar panels.

System Requirements

LED.FYI runs in any modern web browser. For the best experience:

• Chrome, Edge, or Firefox (latest versions)
• Hardware-accelerated graphics enabled for smooth 3D rendering
• A display resolution of 1920x1080 or higher is recommended

LED.FYI is also available as a desktop app for macOS, Windows, and Linux with additional features like external output windows for pixel-perfect LED testing.