User-agent parser

User-agent parser. Detect and parse Browser, Engine, OS, CPU, and Device type/model from an user-agent string. Instantly decode browser and device information with our free online User Agent parser.

This essential web analytics and backend development tool allows you to rapidly deconstruct raw HTTP User-Agent headers into structured data containing the operating system, browser name, engine version, and device type.

Whether you are a systems administrator analyzing web server access logs, a frontend engineer debugging cross-browser compatibility issues, or a security analyst identifying malicious crawler bots, our User Agent decoding tool provides crystal-clear visibility into client profiles.

If you need to analyze the full scope of your HTTP requests, our HTTP Headers Parser is the perfect companion utility. Simply paste your raw header string, and extract the parsed device data instantly.

This premium browser identification utility leverages robust client-side algorithms to evaluate your header strings directly within your browser, ensuring that your proprietary access logs, sensitive visitor data, and internal network telemetry are never uploaded to a remote server.

Transmitting raw analytics data to third-party parsing services creates an unacceptable privacy vulnerability and violates data protection standards, but our completely offline tool mitigates this risk entirely, making secure log analysis a 100% private workflow.

We provide a 100% free, private, and secure way to parse User Agent strings locally on your device.

How to use this online tool

User-agent parser is designed for fast browser workflows when you need to format, validate, convert, decode, encode, generate, or inspect data without opening a heavy desktop app. Start with the input field or visible options, review the result, then copy or download the output for the next step.

Private processing in your browser

User-agent parser keeps the normal processing step local in your browser. That is useful for code snippets, tokens, documents, configuration values, text samples, and other material that should not be sent to a remote service unless you explicitly choose to share it.

When this tool is useful

Use User-agent parser for repeatable developer tasks, technical documentation, QA checks, quick conversions, debugging, content cleanup, and internal team workflows. The page focuses on clear inputs, immediate feedback, and output that is easy to reuse in code, reports, tickets, emails, or notes.

Practical tips

Before copying the final result, check important details such as spacing, casing, filenames, encoding, token structure, line breaks, or output format. Small checks prevent mistakes when the result is reused in source code, API requests, documentation, spreadsheets, or shared files.