Private URL tools for exact browser semantics

Parse, build, resolve, serialize, compare, and encode URL text; preserve ordered query tuples; and convert international domain labels without contacting a destination.

Every public operation stays in the active browser tab.

Choose a URL job

Each route has a distinct parse, construction, comparison, or encoding contract.

URL ParserInspect WHATWG URL components and duplicate query entries without contacting the destination.Open tool

URL BuilderAssemble a credential-free HTTP or HTTPS URL from reviewed JSON fields and ordered query tuples.Open tool

Relative URL ResolverApply the standard base-URL algorithm to one reference and show whether the base affected it.Open tool

URL NormalizerReview standard parse-to-serialize changes without claiming two resources are equivalent.Open tool

URL ComparatorTest serialized equality and inspect component differences without claiming the addresses reach one resource.Open tool

Query String ParserInspect duplicate-preserving application/x-www-form-urlencoded query data without flattening it into an object.Open tool

Query String BuilderCreate query text from editable rows rather than a duplicate-destroying object map.Open tool

URL Component EncoderEncode component text once without treating it as a full URL, query string, or Base-N payload.Open tool

URL Component DecoderDecode a component in one strict pass without query-form plus handling or hidden double decoding.Open tool

International Domain Name ConverterProduce reviewed U-label and A-label forms with strict length, bidirectional, joiner, hyphen, and round-trip checks.Open tool

Start by inspecting a URL

See the exact serialized address, origin, credentials, path, fragment, and ordered duplicate query entries, then choose a dedicated construction or transformation route.

Parse URL

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

Parsed component report

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

Result

Run the tool to see a bounded local result.

A transparent URL workspace

URLs can contain credentials, private paths, signed parameters, and unreleased hostnames. Public tools process that text only in the current tab.

Every optional rewrite is visible. Normalization never claims semantic equivalence, comparison never checks server behavior, and international-domain conversion never claims phishing safety.

Bounded inputs, tuple counts, field sizes, and output protect the browser from accidental oversized work.