HTTP Headers Checker
See exactly what your browser sends to every website it visits. This tool displays your HTTP request headers and browser signature — your user agent, language, platform, screen size and more — all processed locally on your device.
What Are HTTP Headers?
Every time your browser requests a webpage, it sends a bundle of HTTP headers along with the request. These are small text fields that describe your request and your device: the User-Agent identifies your browser and operating system, Accept-Language tells the server which languages you prefer, and other headers carry cookies, accepted content types and connection preferences. Servers use these headers to decide how to respond — for example, which language to serve or whether to send a mobile version of the page.
This tool shows you a snapshot of the request information your browser exposes to websites. It is a great way to understand your own browser fingerprint and how much information you share with every site you visit. Because the data is read directly from your browser's JavaScript environment, the tool works entirely on your device and sends nothing to us.
What the Headers Mean
- User-Agent — your browser name, version and operating system.
- Language — your preferred content language(s).
- Platform — the operating system platform your browser reports.
- Screen — your display resolution in pixels.
- Color Depth — the number of bits used to represent a colour on screen.
- Time Zone — your configured timezone.
- Cookies Enabled — whether your browser accepts cookies.
- Do Not Track — your browser's tracking preference, if set.
Click Show My HTTP Headers to generate a live snapshot. You can refresh the page and re-run the check after changing browser settings to see how your fingerprint changes.
HTTP Headers — Frequently Asked Questions
Are my HTTP headers private?
Your browser sends HTTP headers to every website you visit, so they are not private in the strict sense — every site you browse already receives them. What this tool does is show you what that information looks like. The important difference is that this tool reads the data locally on your device and does not send it to us or store it.
Why does the website I visit see a different User-Agent than mine?
Many browsers intentionally send a generic or masked User-Agent, or a reduced version, to improve privacy and compatibility. Mobile browsers, privacy browsers and extensions may alter what is reported. The value shown in the headers output is what your browser actually reports to servers.
Can I change my HTTP headers?
Yes. You can change privacy settings in your browser, use browser extensions that modify request headers, or use a different browser profile. Blocking cookies, disabling Do Not Track overrides, or using a privacy-focused browser will all change what this tool displays, which can help you understand your digital footprint.
Is this the same as my IP address?
No. HTTP headers describe your browser and device, while your IP address identifies your network connection. Together they make up part of your online fingerprint, but they are separate pieces of information. To see your IP address, use our What's My IP tool.
Does this HTTP headers tool track me?
No. This tool reads your browser details entirely on your own device using JavaScript. It makes no request to our servers and stores nothing. Unlike visiting other sites, nothing about your device or session is logged when you use it here.