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Input
Text
URL limit
8 KiB
Runtime
Browser

Parse an absolute URL into ordered, inspectable parts

Inspect WHATWG URL components and duplicate query entries without contacting the destination.

Local processingNo sign-upNo fetch or upload

Parse URL

URL text stays in this tab. Nothing is opened or checked online.

Tool Swim does not upload, fetch, save, log, or create presets from these values.

Parsed component report

Results are inert text or JSON with the applied interpretation visible.

What this tool proves

Explicit URL interpretation

The parser requires an explicit scheme and exposes both the browser's serialized result and the components it interpreted. It does not guess an HTTPS prefix.

Parsing is inspection, not validation of a website

The parser requires an explicit scheme and exposes both the browser's serialized result and the components it interpreted. It does not guess an HTTPS prefix.

The report retains ordered query pairs, including duplicate names and empty values, and marks credentials, opaque origins, special schemes, and changed serialization.

Private, bounded URL processing

The operation runs only after you choose it. Input stays in the current browser tab: Tool Swim does not fetch a destination, resolve DNS, test reachability, upload content, save an account preset, or invoke the developer API.

URLs are capped at 8 KiB, query text at 256 KiB, component text at 64 KiB, query lists at 2,000 pairs, each query name or value at 8 KiB, and serialized output at 1 MiB.

Primary references

Questions and answers

Related URL tools

URL NormalizerReview standard parse-to-serialize changes without claiming two resources are equivalent.URL ComparatorTest serialized equality and inspect component differences without claiming the addresses reach one resource.Query String ParserInspect duplicate-preserving application/x-www-form-urlencoded query data without flattening it into an object.