User-Agent Parser

Parse any User-Agent string into browser, OS, device, and engine

🔒 100% ブラウザ内🆓 ずっと無料⚡ サインアップ不要
注意: 下記のツールインターフェースは現時点で英語のみに対応しています。UI の翻訳は順次進めています。 このツールを英語で見る →
Browser
NameUnknown
Version-
Operating System
NameUnknown
Version-
Device
Typedesktop
Vendor-
Model-
Engine
NameUnknown
Version-

使い方

  1. 1
    Paste a User-Agent string

    From server logs, an analytics export, or a support ticket.

  2. 2
    Click 'Use my browser'

    Instantly fill your own UA to see what your browser reports.

  3. 3
    Read the breakdown

    Browser, OS, device type, vendor, model, and rendering engine each broken out.

User-Agent Parser について

Free online User-Agent parser. Paste any UA string to see the browser name and version, operating system, device type (mobile / tablet / desktop / TV), vendor, model, and rendering engine. Auto-fills your own User-Agent. Runs entirely in your browser. 712 Tools の User-Agent Parser はモダンな JavaScript API を使って完全にブラウザ内で動作します - サーバーがあなたのデータを見ることは一切ありません。つまり、即時の結果、完全なプライバシー、アップロード制限なしです。

デバッグ、簡単な確認、あるいは本番のインシデント対応まで - このツールは何度でも無料で使えます。ウォーターマークなし、サインアップなし、ツール内広告なし。

よくある質問

How accurate is UA parsing?

UA strings are messy - Chrome pretends to be Safari, Edge pretends to be Chrome. This parser covers the common cases; fringe browsers and bots may not match precisely.

Are UAs still useful?

For basic browser/OS breakdown in analytics, yes. For feature detection, always prefer real feature checks (typeof x !== 'undefined') over UA sniffing.

What about Client Hints?

This tool parses the legacy User-Agent string. Modern Chromium browsers also send high-entropy Client Hints (Sec-CH-UA-*) which are more reliable but out of scope here.

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