Serial Communication Tool

A serial communication tool for sending and receiving data via COM ports

[v1.4.0 NEW] Send history (↑↓ keys), Macro scripting (SEND/WAIT/RETRY), Regex alerts, RX/TX rate display, Drag & drop reorder, Auto-save on disconnect, Response time monitor, Per-command timeout, Auto-scroll pause Serial Communication Tool is a browser extension for communicating with PC COM ports (serial devices) using the Web Serial API. No dedicated software installation required — send, receive, and log serial data directly in Chrome. • Serial Communication — Configure baud rate, data bits, parity, stop bits, flow control, RTS/DTR signals • Send/Receive Log — Timestamped logs with export (TXT/JSON/CSV), filtering, and auto-save on disconnect • Send History [NEW] — Press ↑/↓ to recall past commands (up to 50) • Quick Commands — Register frequently used commands for one-click sending with drag & drop reordering • Macro Automation [NEW] — SEND/WAIT/RETRY syntax for automated sequences with response waiting and retries • Alert Monitoring — Keyword alerts with beep and highlight, regex pattern support • RX/TX Rate Display [NEW] — Real-time communication speed (bytes/sec) on the monitor strip • Response Time Measurement — Measures time from send to device response • HEX Binary Send — Send binary data in hexadecimal format • Profile Sharing — Import/export connection settings for team sharing • Auto-Connect — Automatic reconnection to previously used devices • Keyboard Shortcuts — Ctrl+D, Ctrl+L, Ctrl+Shift+S, /, ↑↓, Escape • Multi-language — Japanese, English, Chinese, German