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keyzforge

Open source, runs in your browser

Forge your own security key.

Flash Keyzforge firmware onto an ESP32 or Raspberry Pi board, then tune its LED, USB identity and security from one place.

Start flashing Configure a key

Everything a key needs, start to finish.

Flasher

ESP32 over Web Serial, Raspberry Pi Pico over WebUSB. Firmware comes from Keyzforge or official releases, and is checked against your chip before it is written.

Open

Configurator

LED pin, colours, brightness, USB name and secure boot. No PIN or admin rights.

Open

Passkeys

Set your PIN, see which sites have a passkey on the key, and remove the ones you no longer use.

Open

Monitor

Watch boot logs and see the moment your board starts running as a key.

Open

Open firmware

The firmware is built in public by GitHub Actions from open source. Fork it, change a build option, and flash your own.

Open

Works with boards you can buy for a few dollars.

  • ESP32-S3

    Waveshare S3-Zero, DevKitC-1 and more

    Flash over USB from the browser

  • ESP32-S2

    S2 Mini, Saola and similar boards

    Flash over USB from the browser

  • RP2350

    Raspberry Pi Pico 2 and RP2350 boards

    Flash over USB from the browser

  • RP2040

    Raspberry Pi Pico and 40+ RP2040 boards

    Flash over USB from the browser

From bare board to passkey in minutes.

  1. 1

    Flash

    Plug the board in while holding BOOT and let Keyzforge write the firmware.

  2. 2

    Configure

    Point the LED at the right pin and pick a colour order that looks right.

  3. 3

    Register

    Add the key to your accounts as a passkey or second factor.

Start flashingView source