Interactive Tools
Explore Lightning Network concepts hands-on. All simulations run entirely in your browser.
Featured
BOLT4 Onion Packet Builder
Construct and inspect Lightning onion packets step-by-step. Understand how payments are routed through multiple hops while maintaining privacy through spherical onion encryption.
Open Tool →Live Now
BOLT4 Onion Builder
Construct and visualize onion packets for multi-hop routing.
AvailablePSBT Playground
Interactive explorer for Partially Signed Bitcoin Transactions.
AvailableBOLT-11 Invoice Decoder
Parse and decode Lightning invoices to see all internal fields.
Coming SoonFee Calculator
Calculate routing fees for complex multi-hop payments.
Coming SoonRoadmap
HTLC Visualizer
Interactive HTLC lifecycle
Route Simulator
Multi-hop routing demo
Payment Animation
Visual flow of satoshis
MPP Visualizer
Multi-part payment demo
Commitment Tx
Transaction structure
Key Generator
Generate LN key pairs
Want to contribute a tool?
This project is open source. We welcome contributions for new visualizations and educational tools.
View Project on GitHub