Announcing Web Serial Support in Firefox
Firefox 151 has introduced support for the Web Serial API, enabling direct communication with various serial-connected devices. This feature enhances the browser's utility for hobbyists and developers working on projects like home automation and 3D printing. Organizations like Adafruit have already demonstrated the practical applications of this new capability.
- ▪Firefox can now connect directly to microcontrollers, development boards, and other serial-connected hardware from the web.
- ▪Web Serial allows web applications to communicate with compatible devices without needing native software.
- ▪Adafruit has showcased the value of Web Serial by simplifying the installation of CircuitPython on their devices.
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| Original publisher | Mozilla Hacks |
| Canonical URL | https://hacks.mozilla.org/2026/05/web-serial-support-in-firefox/ |
| Publication time | Thu, 21 May 2026 18:00:05 +0000 |
| Retrieval time | 2026-05-21T18:01:35.547Z |
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Opening excerpt (first ~120 words) tap to expand
Support for Web Serial in Firefox 151 for Desktop Firefox can now connect directly to microcontrollers, development boards, 3D printers, power meters, and other serial-connected hardware from the web. Starting in Firefox 151 for Desktop, support for the Web Serial API allows web applications to communicate with compatible devices without requiring native software. Web Serial compatible devices are popular among hobbyists, hardware hackers, educators, makers, and developers with use cases ranging from home automation to hardware prototyping and 3D printing. Web Serial support makes Firefox more useful for these kinds of projects. One of the organizations that has demonstrated the value of Web Serial is Adafruit, a leader in open-source hardware and STEM education.
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Excerpt limited to ~120 words for fair-use compliance. The full article is at Mozilla Hacks.
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