HTTP Header Checker

View HTTP response headers for any URL

📡 This tool queries public APIs. Some lookups may be limited by CORS or rate limits. For comprehensive results, try command-line tools like nslookup, dig, or curl.

How to Use Http Headers

  1. Enter or paste your input data.
  2. Click the action button to process.
  3. Copy or download the output.

All processing happens locally in your browser. Your data is never uploaded to any server.

Frequently Asked Questions

Is Http Headers free to use?

Yes, completely free. No signup, no limits. All processing happens in your browser — your data never leaves your device.

Does Http Headers work on mobile?

Yes, it works on all devices including phones and tablets. The interface is fully responsive.

Is my data safe?

Absolutely. Everything runs locally in your browser using JavaScript. No data is uploaded to any server.