Free browser-based Printed Circuit Board (PCB) reverse engineering tool for electronics. Trace signal paths through multi-layer PCBs with virtual X-Ray view. Annotate components, vias, traces, and pads. Perfect for PCB reverse engineering, circuit board reverse engineering, PCB analysis, PCB troubleshooting, PCB documentation, circuit board analysis, electronics troubleshooting, circuit board repair, PCB repair, and PCB learning. Features include: PCB trace, PCB tracing, printed circuit board trace, printed circuit board tracing, signal path tracing, via tracing, trace analysis, component annotation, PCB component identification, multi-layer PCB analysis, PCB x-ray view, X-Ray view, virtual X-Ray, PCB X-Ray, PCB annotation, PCB design, electronics reverse engineering, electronics tool, electronics learning, PCB viewer, PCB editor, online PCB tool, browser PCB tool, free PCB software, PCB reverse engineering software, PCB trace tool, PCB netlist, PCB schematic, KiCad export, BOM export, Bill of Materials, circuit connections, copper traces, SMD pads, through-hole pads, voltage buses, ground connections, board dimensions, PCB measurements, PCB scaling, debugging circuits, test points, component placement, pin connections, power nodes, ground nodes, PCB photographs, circuit documentation, PCB analysis tool, PCB reverse engineering tool, AI-powered component identification, artificial intelligence, Gemini, Claude, supervised learning, connection tracking, pin-to-pin connections, net building, net naming, assign meaningful names to nets, named nets, record measurements. No installation required.