Serial Terminal
Free web-based Serial Terminal and serial monitor directly in your browser. Connect via Web Serial API to any COM port, USB-UART adapter, or serial interface, send commands, and analyze data in real time without installation.
Advanced Send, HEX & MacrosOptionalTransmit structured strings or raw hex bytes, store quick macros, or run interval pinging.
How does this tool work?
Professional browser-based Serial Terminal providing direct bidirectional communication with any serial device, microcontroller, modem, embedded system, or USB-to-UART interface via the modern Web Serial API – 100% local, secure, and without desktop software installation.
Supports standard and custom baud rates from 300 to 2,000,000+ baud; real-time interactive character streaming with local echo; full ANSI/VT100 graphic rendition (16-color, 256-color palette, 24-bit TrueColor RGB, bold, italic, underline); raw HEX dump inspector for binary protocols; configurable UART framing (data bits, stop bits, parity, hardware RTS/CTS flow control); hardware handshake lines (DTR, RTS, CTS, DSR, CD, RI); automatic copy-on-select (Auto-Copy); full-screen Focus Mode; quick commands/macros; command history navigation; live text filtering and log file export.
Where are my data processed?
100% Client-Side: Your data never leaves your browser.
All calculations, conversions, encodings, and file processing of this tool are executed exclusively locally via JavaScript on your client device. No inputs, passwords, cryptographic keys, texts, or uploaded files are ever sent to our servers or third parties. Once the page is loaded, the tool remains completely functional even offline.