テキスト大文字小文字変換

テキストを大文字、Title Case、camelCase、snake_case、kebab-case などに変換。ライブプレビュー、コピー、完全ローカル動作。

Text Case Converter turns whatever you paste into every case and naming style at the same time — no dropdown, no re-running. Type or paste once and all twelve results appear instantly, each with its own copy button. The tokenizer is Unicode-aware and understands camelCase humps, acronym runs (HTMLParser → html parser) and attached digits, so identifiers come out the way a developer would actually write them. Key features: - 12 case styles at once — camelCase, snake_case, kebab-case - Live conversion as you type, with no convert button to press - Copy any result in one click, with a tick to confirm - Live counters for characters, characters without spaces, words and lines - Smart splitting handles camel humps, acronym runs and digits correctly - Paste from the clipboard, load a sample, or clear the box in one tap All conversion happens locally in your browser. Nothing is uploaded, tracked, or sent anywhere.