Developer & Network User agent parsing

User Agent Parser

Parse browser, OS, and device from user-agent strings.

User Agent Parser breaks a raw user-agent string into browser, engine, OS, and device details. It is useful for analytics QA, support diagnostics, and debugging client-specific behavior. Instead of manually reading long UA strings, you get structured fields that are easier to compare across requests. This helps confirm what environment a request came from when triaging rendering or compatibility issues.

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Input guidance

Paste the full user-agent string from logs or request headers.

How to use this tool

Paste the full user-agent string from logs or request headers.
Run the parser to extract browser, OS, and device metadata.
Use parsed values to reproduce client-specific issues or update compatibility rules.

User Agent Input

Parsed Output

Browser: Unknown

OS: Unknown

Device: Unknown

Mobile: No

Formula or method

Matches the submitted user-agent string against browser, operating-system, and device tokens and returns the detected fields as diagnostic hints.

How to interpret the result

The parser identifies the browser as Unknown, the operating system as Unknown, and the device class as Unknown.
These fields come from simple user-agent token rules and should be treated as diagnostics, not secure identity signals.
User-agent strings can be spoofed, frozen, or reduced by privacy features.

Review note and limitations

User-agent strings are self-reported and can be spoofed or reduced by browser privacy controls.
Do not use parsed user-agent fields as authentication, authorization, or fraud-proof evidence.

Related tools and workflows

Related developer and network tools help check the surrounding payloads, records, protocols, or diagnostics in the same troubleshooting flow. Start with HTTP Headers Checker, IP Lookup, and What's My IP when you need a quick follow-up check.

User Agent Parser

Input guidance

How to use this tool

User Agent Input

Parsed Output

Formula or method

How to interpret the result

Review note and limitations

Related tools and workflows

HTTP Headers Checker

IP Lookup

What's My IP

URL Encoder Decoder

JSON Diff Viewer