hgoebl/mobile-detect.js

Health v2 · maintenance only

Flags: no_releases

Adoption not part of the score

4138 stars · 865 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

mobile-detect.js is a JavaScript library that detects device type (phone, tablet, desktop), operating system, and versions by matching regular expressions against a User-Agent string. It is a loose port of the PHP Mobile-Detect library and works in both the browser and Node.js.

Use cases

• detect if a visitor is on a mobile phone or tablet
• serve different content based on device type
• detect operating system from user agent string
• redirect mobile users to a mobile site
• log device types of website visitors in Express
• check if a user agent is a desktop browser

When to choose

• you must use User-Agent sniffing for legacy reasons and need a lightweight, dependency-free library
• you need device detection in both browser and Node.js with the same API
• you are maintaining an older codebase that already relies on UA-based detection

When to avoid

• you can use feature detection (e.g. Modernizr) or CSS media queries instead, which the author recommends
• you need reliable, up-to-date detection of the newest devices, since the regex rules are outdated
• you need the mobile grade feature, which the author says is useless nowadays
• you are starting a new project where responsive design would remove the need for UA sniffing

Facets

library · maturity maintenance

http-server middleware web-development frontend developer-tools browser user-agent-parsing device-detection mobile-detection responsive-design user-agent-sniffing nodejs javascript

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markdown · JSON · MCP: product_card(name="hgoebl/mobile-detect.js")