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The full-featured ESP8266 flashing tool for Tasmota. With the great ESPtool from Espressif under the hood, and all required settings by default.


  • Automatic backup of current ESP image before flashing: in case you want to return to manufacturer firmware
    Now supporting backup sizes up to 16MB

  • Flash local .bin images, or simply select from release or development images: it will download them automatically

  • Send configuration to flashed device via serial: one-click configure of Wifi (including recovery AP), MQTT, Module and/or Template

  • Single-click get the IP of your device (DISCLAIMER: this functionality depends on the current state of your device, so it might require a few tries to get the proper result)

  • Dark theme: proven to increase flashing speed and reliability

Installation and how to run

  • Option 1: get Windows standalone executable (thanks @Jason2866):
    tasmotizer.exe (64bit)
    tasmotizer-x86.exe (32bit)
    In the odd case of your antivirus going haywire over that application, it's a false positive.

  • Option 2: Install from PyPI using pip:
    Upgrade pip and wheel packages: pip3 install --upgrade pip wheel
    Install tasmotizer: pip3 install tasmotizer
    Then simply run or python3 -m from the shell/command line

  • Option 3: Clone the repo, pip3 install -r requirements.txt followed by python3 and flash away!


(c) 2019 Jacek Ziółkowski