User Agent Parser

Apply an explicit small set of browser and OS token rules to the supplied User-Agent string. Heuristic parsing, not proof of a device identity.

Free to useNo sign-upRuns in your browser

Enter your details

Enter the inputs, then select Parse user agent.

Your result

Enter your details

Result will appear here

How User Agent Parser works

Apply an explicit small set of browser and OS token rules to the supplied User-Agent string.

Heuristic parsing, not proof of a device identity. Spoofed and reduced strings may be ambiguous; unsupported tokens are labelled Unknown.

Concept diagram for User Agent Parser, showing user-agent string input and the supported output. — Concept diagram; the three operation images are actual browser captures.

How to use User Agent Parser

Start with your own input.

Enter user-agent string

Replace the example with your user-agent string.

Parse user agent

User Agent Parser: input and settings in the implemented browser tool — Actual local browser view. Open the image to read it at full size.

Set the options

Check the source against the supported syntax and limits below.

Parse user agent

User Agent Parser: tool result in the implemented browser tool — Actual local browser view. Open the image to read it at full size.

Run and check the output

Select Parse user agent. Review recognized browser, operating system and device hints, then use Copy result or download the result file.

Parse user agent

User Agent Parser: review the details in the implemented browser tool — Actual local browser view. Open the image to read it at full size.

When to use User Agent Parser

Inspect a copied header

To inspect a copied header, start with user-agent string. Apply an explicit small set of browser and OS token rules to the supplied User-Agent string.

Parse user agent

Website page details represented by connected information cards. — Prepare the page details. Concept illustration.

Read familiar browser tokens

To read familiar browser tokens, start with user-agent string. Heuristic parsing, not proof of a device identity.

Parse user agent

Website information shown in two conceptual preview formats. — Review a working example. Concept illustration.

Compare desktop and mobile examples

To compare desktop and mobile examples, start with user-agent string. Review recognized browser, operating system and device hints, then use Copy result or download the result file.

Parse user agent

A website document and related pages connected in a workflow. — Continue your site workflow. Concept illustration.

How to read the result

Check what the output means.

Recognized browser, operating system and device hints. Apply an explicit small set of browser and OS token rules to the supplied User-Agent string.

Heuristic parsing, not proof of a device identity. Spoofed and reduced strings may be ambiguous; unsupported tokens are labelled Unknown.

Parse user agent Parse user agent

Website output represented alongside a review preview. — Understand the generated result. Concept illustration.

Supported input and limits

Check the format before processing.

Heuristic parsing, not proof of a device identity. Spoofed and reduced strings may be ambiguous; unsupported tokens are labelled Unknown.

Inputs and results are handled in this browser.

Parse user agent Parse user agent

Page details reviewed before use in a website. — Review before using it on a site. Concept illustration.

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