Slug / Meta Description Generator

Suggestions are literal, editable through the source fields: title + optional " | brand"; description text (or title if empty) + the same suffix. No facts, keywords or semantic writing are invented. Spaces in suggestions are preserved. Clear removes content, not processing preferences.

Slug: ASCII uses Unicode Form D and removes combining marks; Unicode uses Form C and keeps letters/digits. Both lowercase invariantly, drop remaining combining marks and joiners, collapse all other separators to one hyphen and trim boundary hyphens. ASCII is not transliteration and can refuse an empty result. Unicode mode does not provide language-aware word segmentation. A slug is a path segment, not a full URL; URL escaping is a separate consumption step.

Malformed surrogate sequences, controls, line/paragraph breaks and format characters other than ZWNJ/ZWJ are refused, not silently trimmed. ZWNJ/ZWJ stay literal in suggestions and are removed from slugs. Preview is encoded local text, never executable markup. Escaped markup uses .NET WebUtility HTML encoding, not URL escaping. Every generated output, including combined markup, is limited to 4,096 UTF-16 characters; escaping can exceed the budget.

Native input ceilings are processing limit + 2 before transport. Oversized pastes may clip but are refused, never processed as prefixes; the affected field and stale outputs are cleared. Re-enter every refused field or Clear. Changing an option or repairing a different field cannot unlock a refusal. Ordinary keyboard/paste is bounded; hostile programmatic assignments and every IME are not certified.

No site fetching, crawler simulation, external API/model, publishing or payload persistence is added. Interactive Auto server events traverse the Blazor connection; WebAssembly runs on-device. Copy explicitly writes only the selected output. Website navigation is active; extension and Android are inactive metadata, not hard route denial.