FreeNo SignupInstantUpdated: February (2026)

Web Browser and User Agent Inspector

Web Browser and User Agent Inspector

How to Use?

1

Auto Scan

The second you step on the page, the Javascript engine reads the technical limits of your device.

2

Technical Detail Review

Watch the results in the Model (Webkit/Blink), Operating System (Mac/Windows) and Cookie permissions tabs displayed on the screen.

3

Copy for Support

If you are experiencing an error/bug on a site, ask "Which browser is installed on your computer?"In answer to the question, copy the data here with one click.

What is this tool for?

User Agent

A complex coded ID that tells an internet page something like 'I have come with Chrome version 116 on Windows 11'.

Javascript and Resolution

These features allow sites to decide whether to serve you a 'Mobile Design (Responsive)' or a Wide Desktop PC view.

Cookie Policy

The tool tests whether your browser is open to cookie storage. If it's closed, membership processes won't work on many shopping sites.

Information Leakage?

No, your browser does not leak personal data (Name etc.) other than your IP number. This screen only measures the hardware capability framework of your device.

When should you use this?

The Window That Connects Us to the Internet on Phone/Computer: Browsers

If you think of the Internet as a huge library and your device as a person entering this library; Your browser (Safari, Chrome, Edge, Firefox) is your identity and glasses. When you click on a blue link, a "Handshake" occurs in the background. Servers ask your device: "How wide is your screen? Is your processor powerful? What languages do you understand?". ToolBoxTR Browser Info Tool (Browser Info Checker) pulls exactly which technical reports websites can read about your device in those background conversations to your main screen in English and transparently.

The Favorite Word of IT Specialists: "Can I Read Your User Agent?"

In daily life, you cannot enter an e-government portal, the system gives an error. One of the first things requested from you when you call customer service is hardware info. Because the line coding of the Apple device (iOS) and the Webkit/Blink Core behaviors of the Samsung (Android Biotic) operating system show differences. When you press the "Copy" button in this menu and send the data to the support specialist, the reason for the error is 99% diagnosed.

What Is Browser Fingerprinting Danger?

Many users think they are 100% hidden and unfindable when they browse the Internet with (VPN). However, large advertising networks (Google, Facebook Meta etc.) collect the "Current Screen Resolution + Installed Fonts + Language Setting + Installed Extensions" list of your Browser with a huge hash algorithm, even if your IP changes. This is called Digital Fingerprint. Computers with the same specific hardware almost do not exist in 8 Billion people. This screen allows you to recognize the structure of your device, which is completely "Naked and Unique" in the virtual world.

Frequently Asked Questions

Billions of websites around the world (from Amazon to Netflix) must read this 'Browser Version' information called HTTP Headers in the background to work. This is a public device communication.
Because web platforms can throw errors on old (not up-to-date) browsers. Customer representatives or developers understand with this information whether the problem originates from their own system or from your very old device version.
Even if you enter in a private tab, resolution and operating system platform (Mac/Windows) info does not change. However, if you use a VPN, your IP address is masked.
The status of your browser's 1st Party storage (Local Storage, Cookies) permissions is shown. If it's 'Closed/False', the products you add to your cart disappear when you refresh the page.

Related Tools

See all