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Detect client browser and operating system to test compatibility messages, feature flags, and analytics across environments.

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How to use

  1. Enter or paste the value you want to process.
  2. See the result instantly on the page.
  3. Copy the output for tests, demos, or QA pipelines.

What it's for

Detect client browser and operating system to test compatibility messages, feature flags, and analytics across environments.

About this tool

These tools read `navigator` and browser APIs in your session. Results reflect your current device — useful when reproducing user-reported bugs.

Also useful

よくある質問

Does data leave my browser?
Yes — processing stays on your device. Nothing is uploaded to our servers.
Do I need to install anything?
No. Open the page in your browser and use the tool directly.

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