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WebDevTools

System & Browser Info

Everything your browser can tell you about this device and session

Collects technical details from Web APIs: browser, screen, network, timezone, GPU, storage and more. The public IP is fetched from an external service. Nothing is stored on our servers.

Collecting information…

Data is read locally in your browser. Only the public IP request goes to ipify.org. Nothing is stored on our servers.

Guide: inspect browser capabilities and environment

Compatibility bugs hinge on user agent, viewport, locale, cookies, WebGL, approximate memory, and experimental APIs. Asking users to open `about:` pages does not scale — one panel speeds support triage.

Data comes from public browser APIs (`navigator`, `screen`, feature detection) with no report sent to WebDevTools. Attach the summary to bug tickets with exact session context.

Use for Safari iOS, Android PWA, or third-party blocking issues. Copy the summary to Slack or Jira before requesting more screenshots.

Step by step

  1. Open the tool page — The panel auto-loads user agent, platform, resolution, and preferred language.
  2. Review supported features — Check WebP, service workers, localStorage, hardware hints — gaps explain silent failures.
  3. Compare to expected environment — Cross-check analytics: corporate WebViews often disable APIs.
  4. Copy the report — Paste into support tickets or repro PRs — no passwords or tokens.

Frequently asked questions