Firefox Nightly 151.0a1 has added support for the Web Serial API, allowing browsers to communicate with serial-connected devices like 3D printers, Arduino microcontrollers, and smart home systems. The feature, after 13 years of discussion and Mozilla's previous security objections, brings Firefox in line with Chrome (which added support in 2021) and other Chromium-based browsers. Users must enable it via a feature flag.
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You can finally control serial devices from Firefox
Mozilla drops 13-year security objection and ships Web Serial in Firefox Nightly, unblocking browser-to-hardware control for Arduino, 3D printers, and IoT—finally catching Chrome's 5-year lead.
Tuesday, April 14, 2026 12:00 PM UTC2 MIN READSOURCE: The RegisterBY sys://pipeline
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