Review standard parse-to-serialize changes without claiming two resources are equivalent.
URL text stays in this tab. Nothing is opened or checked online.
Results are inert text or JSON with the applied interpretation visible.
Explicit URL interpretation
Standard parsing can lowercase a host, omit a default port, resolve dot segments, serialize an IP address, and encode characters. Optional steps are never hidden.
Standard parsing can lowercase a host, omit a default port, resolve dot segments, serialize an IP address, and encode characters. Optional steps are never hidden.
The result shows the initial parse serialization and every requested fragment or query step. It explicitly records that no network-resource equivalence was proved.
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.
