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Is JavaScript Enabled?

Instantly check whether JavaScript is enabled in your current browser and review a full capability report — cookies, local and session storage, service workers, WebGL, geolocation, and other commonly-checked Web APIs. The fastest way for support engineers, QA testers, and end users to confirm browser state before debugging a broken site or filing a bug report. It is brought to you by TestMu AI (formerly LambdaTest), the team behind a unified software testing platform.

What Is the "Is JavaScript Enabled?" Tool?

The Is JavaScript Enabled? tool answers the simplest question on the web — "can this browser run JavaScript right now?" — and then goes further. If JavaScript is on, the page paints a dynamic status badge and a detailed capability report covering cookies, local and session storage, service workers, WebGL, geolocation, and other widely used Web APIs. If JavaScript is off, the static fallback message remains visible so you immediately know what is happening. It is the fastest way to confirm browser state before debugging a broken site, validating a customer support ticket, or filing a bug.

How to Use the Tool

Open this page in the browser you want to test — desktop or mobile.
Look at the status badge. If it renders, JavaScript is enabled. If you only see the static fallback text, JavaScript is disabled or blocked.
Scroll the capability table to review which Web APIs the browser supports — cookies, local storage, service workers, WebGL, geolocation, and more.
If you need to enable JavaScript, follow the browser-specific steps in Chrome, Firefox, Edge, or Safari (covered in the FAQ).
Refresh the page after changing browser settings to confirm the new state.

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Why Use This Tool?

"The site looks broken" is the most common bug report, and JavaScript being off (or blocked by an extension, corporate proxy, or strict content security policy) is one of the most common root causes. This tool gives a one-glance answer plus an environment snapshot, so support engineers, QA testers, and end users can quickly confirm what the browser actually supports before chasing other theories.

Key Features

JavaScript status shown as a dynamic badge (or static fallback when JS is off).
Cookie support — confirms whether the browser accepts first-party cookies.
Local & session storage availability for the current origin.
Service worker support detection (required for many PWAs).
WebGL capability for hardware-accelerated graphics.
Geolocation API presence.
Download a snapshot of the capability report for bug attachments.
Runs locally — no data leaves your browser.

Use Cases

Customer support triage: ask the user to open the tool and share the result.
QA testing: verify JavaScript state across browsers before reproducing a bug.
PWA & service-worker debugging: confirm the platform supports the required APIs.
Corporate environment audits: identify when strict policies block scripts.
Education: teach students why JavaScript matters for modern web pages.
Compatibility checks: screen older browsers before recommending a feature rollout.
Privacy reviews: double-check storage and cookie behaviour after toggling settings.

For the steps either side of this one, see cURL to JavaScript, What is my User Agent, and JavaScript Escape. Track the suites that consume this text in TestMu AI Test Manager.

Frequently Asked Questions

1. How can I tell if JavaScript is enabled?

If the dynamic badge and capability report are visible, JavaScript is enabled. If only the static fallback is shown, it is off.

2. Why does JavaScript matter?

Most modern sites need JavaScript for navigation, forms, and dashboards. Turning it off breaks a large portion of the web.

3. How do I enable JavaScript in Chrome?

Settings → Privacy and security → Site settings → JavaScript → choose "Sites can use JavaScript".

4. How do I enable JavaScript in Firefox?

Open about:config, search for javascript.enabled, and set it to true. Reload the page afterwards.

5. How do I enable JavaScript in Edge?

Settings → Cookies and site permissions → JavaScript → toggle Allowed (recommended).

6. How do I enable JavaScript in Safari?

Safari → Settings → Security → tick Enable JavaScript.

7. Is disabling JavaScript safer?

It reduces some risks but breaks most sites. A safer compromise is keeping JavaScript on, using a reputable script blocker, and keeping the browser updated.