MIDI Monitor is now MIDI Monitor and Sender

There is a newer version of this post.

MIDILLI MIDI Monitor has just leveled up — it now also sends messages, not just listens.

MIDILLI MIDI Web Tool

We’re excited to announce that MIDILLI MIDI Monitor is now officially MIDILLI MIDI Monitor and Sender — or simply, MIDILLI MIDI Web Tool.

Check it out

Starting today, you can manually send MIDI messages directly from your browser to any connected output device.

🔧 What’s new?

• ✅ Filter which message you want to see in the log (by message type or channel).

• ✅ Select how many last messages you want to see in the logs.

• ✅ Export the logs into a file to analyze on your computer.

• ✅ Send MIDI messages manually via a simple input prompt.

• ✅ Select your desired output port from the list.

• ✅ Supports both decimal and hexadecimal (with 0x prefix) formats.

• ✅ Type in the MIDI message (like 0x90 60 127 or 144 60 127), hit Send, and it goes!

• ✅ All sent messages and any incoming responses appear in the log — in order — so you can track what was sent and what came back.

This makes the tool ideal for:

• Real-time testing

• Troubleshooting

• Live debugging of custom MIDI setups

🚀 Minimal, powerful, and now interactive — all from your browser.

Check it out