Read each scalar value with explicit UTF-8, UTF-16, category, and default-ignorable facts.
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Explicit Unicode interpretation
Text that looks like one string can contain several code points, combining marks, joiners, or control characters. The report keeps character, code-point, code-unit, and byte views separate.
Text that looks like one string can contain several code points, combining marks, joiners, or control characters. The report keeps character, code-point, code-unit, and byte views separate.
Broad category and default-ignorable decisions come from pinned Unicode 17 tables. Familiar invisible controls receive names; unlabelled characters remain visible as data instead of guessed names.
Every operation rejects lone UTF-16 surrogates before processing. Inputs are capped at 256 KiB, report operations at 20,000 code points, and output at 1 MiB.
The work starts only after submission and stays in the current browser tab. Tool Swim does not upload text, call the developer API, retain results, or save presets.
