fox-webusb — steck0714
Adds a navigator.usb (WebUSB) polyfill to Firefox via a local Native Messaging host. Firefox does not implement WebUSB natively (see README). Install the host with: pip install fox-webusb-host
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fox-webusb is an experimental WebExtension that provides a WebUSB-compatible
Firefox does not implement WebUSB natively. fox-webusb bridges WebUSB API calls from web pages to a locally installed Native Messaging host, which handles communication with USB devices.
The native host is distributed separately as the
Install it with:
After installation, follow the project README for Native Messaging host registration and setup instructions.
fox-webusb is an experimental WebUSB-compatible implementation for Firefox.
It is intended to provide a compatible WebUSB API rather than claim that Firefox has native WebUSB support. Some behavior, limitations, and compatibility may differ from Chromium's native WebUSB implementation.
Physical USB hardware and WebUSB website compatibility are still under active testing.
The implementation is actively developed and may change between releases.
If you want to inspect the actual implementation of the latest Firefox version, including the WebExtension, Native Messaging bridge, native host, tests, and supporting components, see the
https://github.com/steck0714/fox-webusb/tree/firefox
The
Repository:
https://github.com/steck0714/fox-webusb
fox-webusb is part of the Mock-webusb project, which explores WebUSB-compatible APIs for environments where native WebUSB support is unavailable.
navigator.usb API in Firefox.Firefox does not implement WebUSB natively. fox-webusb bridges WebUSB API calls from web pages to a locally installed Native Messaging host, which handles communication with USB devices.
The native host is distributed separately as the
fox-webusb-host Python package.Install it with:
pip install fox-webusb-host
After installation, follow the project README for Native Messaging host registration and setup instructions.
- Provides
navigator.usband WebUSB-compatible interfaces - USB device selection through
requestDevice() - Device open and close operations
- Interface claiming and releasing
- Configuration and alternate-interface selection
- Control, bulk, and isochronous transfers
- Device reset and endpoint halt management
- USB connect and disconnect events
- Origin-based permission and device management
- Extension options page for managing permissions and known devices
- Popup diagnostics for native-host connection status
- Optional Rust acceleration for faster Base64 processing
Web page
│
│ navigator.usb
▼
fox-webusb WebExtension
│
│ Native Messaging
▼
fox-webusb-host
│
│ PyUSB / libusb
▼
USB device
fox-webusb is an experimental WebUSB-compatible implementation for Firefox.
It is intended to provide a compatible WebUSB API rather than claim that Firefox has native WebUSB support. Some behavior, limitations, and compatibility may differ from Chromium's native WebUSB implementation.
Physical USB hardware and WebUSB website compatibility are still under active testing.
The implementation is actively developed and may change between releases.
If you want to inspect the actual implementation of the latest Firefox version, including the WebExtension, Native Messaging bridge, native host, tests, and supporting components, see the
firefox branch of the project repository:https://github.com/steck0714/fox-webusb/tree/firefox
The
firefox branch contains the current Firefox-specific implementation and is the best place to inspect the implementation in detail.Repository:
https://github.com/steck0714/fox-webusb
fox-webusb is part of the Mock-webusb project, which explores WebUSB-compatible APIs for environments where native WebUSB support is unavailable.
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Dovoljenja in podatki
Zahtevana dovoljenja:
- izmenjuje sporočila z drugimi programi poleg Firefoxa
- dostopa do vaših podatkov za vsa spletna mesta
Zbiranje podatkov:
- Razvijalec pravi, da ta razširitev ne zahteva zbiranja podatkov.
Več informacij
- Povezave dodatka
- Različica
- 0.0.0.3
- Velikost
- 51,27 KB
- Zadnja posodobitev
- pred enim dnem (23. sep. 2026)
- Sorodne kategorije
- Licenca
- Licenca MIT
- Zgodovina različic
- Dodaj v zbirko
fox-webusb uses Firefox Native Messaging to communicate with a separately installed native host. The native host handles USB communication through PyUSB.
Physical USB hardware support is still under verification. The current verification log documents the tested API behavior, Native Messaging communication, and known limitations.
Verification log:
https://github.com/steck0714/fox-webusb/blob/main/checklog2.md
The native host is not bundled with the WebExtension and must be installed separately.