User Agent पार्सर
User Agent स्ट्रिंग विश्लेषण
User Agent पार्सर का उपयोग कैसे करें
- 1इनपुट फ़ील्ड में User-Agent string पेस्ट करें
- 2स्वचालित रूप से तुरंत पार्स होगा
- 3निकाली गई जानकारी समीक्षा करें
User Agent पार्सर के बारे में
User-Agent पार्सर User-Agent strings को पार्स करता है और browser, operating system और device के बारे में विस्तृत जानकारी निकालता है।
User Agent पार्सर की मुख्य विशेषताएं
- Pre-fills your current browser's user agent for instant inspection
- Extracts browser name and version from any user agent string
- Identifies operating system and OS version
- Detects device type: desktop, mobile, or tablet
- Shows rendering engine (WebKit, Gecko, Blink)
- Supports any user agent string from logs or analytics tools
- Works entirely in-browser — no server requests
- One-click copy for the full parsed summary
उदाहरण
Parse a mobile Safari user agent from an access log
Identify the device and browser from a user agent string in a server access log.
इनपुट
Mozilla/5.0 (iPhone; CPU iPhone OS 17_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.0 Mobile/15E148 Safari/604.1
आउटपुट
Browser: Safari 17.0 | OS: iOS 17.0 | Device: iPhone (Mobile) | Engine: WebKit
Identify a headless Chrome bot user agent
Detect automated headless browser activity by parsing its user agent string.
इनपुट
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/120.0.0.0 Safari/537.36
आउटपुट
Browser: Headless Chrome 120 | OS: Linux x86_64 | Device: Desktop (Headless)
सामान्य उपयोग के मामले
- Analyzing user agent strings from web server access logs to understand visitor devices
- Debugging browser-specific issues by inspecting the exact user agent during support calls
- Validating user agent parsing logic in web analytics implementations
- Identifying bot or automated browser traffic from headless Chrome or Puppeteer user agents
- Testing mobile detection logic by analyzing mobile user agent strings
- Understanding the user agent format when implementing user agent parsing in server-side code
समस्या निवारण
Browser version shows as unknown
समाधान
Some browsers use non-standard or obfuscated version strings. Modern browsers also participate in user agent reduction (reducing specificity for privacy). The raw user agent string is always displayed so you can inspect it directly.
Device type is detected as desktop on a mobile device
समाधान
Some mobile browsers (like Chrome on iPad or Firefox on Android tablets) report desktop-like user agents. Check the full user agent string for "Mobile", "Android", or "iPhone" tokens to confirm the device type.
Chrome user agent shows as Safari
समाधान
Chrome's user agent string contains "Safari" for historical compatibility reasons. The distinguishing token is "Chrome/". The parser correctly identifies Chrome by looking for the Chrome token first.
अक्सर पूछे जाने वाले प्रश्न
What information is extracted from a user agent?
Browser name and version, operating system (name and version), device type (desktop, mobile, or tablet), and rendering engine (WebKit, Gecko, Blink). The raw user agent string is also displayed.
Why do most user agents start with "Mozilla/5.0"?
"Mozilla/5.0" is a historical artifact. Early browsers impersonated Netscape (Mozilla) to get served compatible content. Modern browsers continue this convention for compatibility, even though they are not related to Mozilla.
Can I detect Chrome vs Chromium vs Edge from the user agent?
Yes. Chrome, Chromium, Edge, and Opera all use the Blink engine but include distinctive tokens (Chrome, Edg, OPR) in their user agent strings. The parser checks for these tokens to correctly identify each browser.
Is user agent detection reliable for production use?
User agent parsing is useful for analytics and logging but should not be used as the sole mechanism for feature detection in production code. Use feature detection (checking for specific browser APIs) instead of user agent sniffing for compatibility-critical logic.
What is user agent reduction?
Modern Chrome reduces its user agent string to limit fingerprinting. Specific OS versions, device models, and minor browser versions are replaced with generic values. This means some fields may be less specific than the device's actual capabilities.
Can I test a user agent from a bot or crawler?
Yes. Paste any user agent string — including those from Googlebot, Bingbot, cURL, Postman, Puppeteer, or Playwright — and the tool will parse and display its components.
Is my data sent to a server?
No. All parsing is performed locally in your browser using JavaScript string analysis. Your user agent string is never transmitted to any server.
What is the difference between the browser engine and the browser?
The rendering engine processes HTML/CSS and executes JavaScript. Chrome, Edge, and Opera all use the Blink engine. Firefox uses Gecko. Safari uses WebKit. A browser is the full application; the engine is the core rendering component it uses.