Browser User Agent Inspector

What Is a User-Agent String?

Whenever you open a website, your web browser sends a short digital introduction called a User-Agent string. This message tells the website exactly what browser you are using, your operating system version, and your screen type. Web servers use this information to automatically adjust how a website looks, ensuring you get the best layout whether you are browsing on a mobile phone, tablet, or desktop computer.

Why Checking Your User-Agent Is Helpful

Knowing your User-Agent details is extremely useful for basic web troubleshooting and privacy auditing. It allows web developers to test if a website responds correctly to different devices, helps IT specialists confirm that browser updates installed successfully, and lets privacy-conscious users verify if privacy extensions or anti-tracking tools are properly masking their browser fingerprint.