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 # Javascript implementation of esptool
 
+This repository contains a Javascript implementation of [esptool](https://github.com/espressif/esptool), a serial flasher utility for Espressif chips. Unlike the Python-based esptool, `esptool-js` doesn't implement generation of binary images out of ELF files, and doesn't include companion tools similar to [espefuse.py](https://github.com/espressif/esptool/wiki/espefuse) and [espsecure.py](https://github.com/espressif/esptool/wiki/espsecure).
+
+`esptool-js` is based on [Web Serial API](https://wicg.github.io/serial/) and works in Google Chrome and Microsoft Edge, [version 89 or later](https://developer.mozilla.org/en-US/docs/Web/API/Serial#browser_compatibility).
+
+## Live demo
+
+Visit https://espressif.github.io/esptool-js/ to see this tool in action.
+
+## Testing it locally
+
 ```
-npm install xterm
-npm install crypto-js
-python2 -m SimpleHTTPServer 8008
+npm install
+python3 -m http.server 8008
 ```
 
-Then browse http://localhost:8008
+Then open http://localhost:8008 in Chrome or Edge.
+
+## License
+
+The code in this repository is Copyright (c) 2021 Espressif Systems (Shanghai) Co. Ltd. It is licensed under Apache 2.0 license, as described in [LICENSE](LICENSE) file.