URL Encoder and Decoder は何をしますか？
URL Encoder and Decoder はブラウザ上でコンテンツをエンコードまたはデコードするツールで、結果と制限を明確に示します。 検証済みの機能： Component encoding, Full URL encoding, Malformed-sequence errors, Query-string parsing.
Component mode and full-URL mode are not interchangeable
Use component mode for a path segment, key, or parameter value. Use full-URL mode only when a complete URL already contains structural separators that must remain readable.
使い方
- Choose whether the input is one component, a complete URL, or a query string.
- Paste the value into Input; conversion runs immediately when the text or operation changes.
- Inspect the encoded text or parsed query JSON, then copy or download it.
実際の入出力例
Encode one query-parameter value
入力
hello world & tea出力
hello%20world%20%26%20teaEncode component escapes spaces and the ampersand so the value cannot be mistaken for a query separator.
一般的なエラーと対処
| 症状 | 原因 | 対処 |
|---|---|---|
| Decode component reports a malformed URI sequence. | A percent sign is not followed by two hexadecimal digits or the bytes are not valid UTF-8. | Correct the incomplete escape instead of repeatedly decoding the value. |
| A full URL loses its separators after encoding. | Encode component was used on the whole URL. | Use Encode full URL to preserve :, /, ?, #, and other structural delimiters. |
Important behavior of URL Encoder
このツール固有の制限： Use component mode for one parameter value; full-URL mode intentionally preserves URL separators.
標準と実装の参考資料
- WHATWG URL Standard (opens in a new tab)Defines URL parsing, percent encoding, and query behavior.
- MDN — encodeURIComponent() (opens in a new tab)Explains the browser API used for component encoding.
URL Encoder — FAQ
Does the URL Encoder upload my input?
No. Processing runs in the current browser tab, and the page does not send tool input to a KitLumi processing endpoint.
What input does the URL Encoder accept?
It accepts plain text, an encoded component, a full URL, or a query string. The workspace checks the input and reports malformed or unsupported values before it produces a result.
What does the URL Encoder produce?
It produces encoded text, decoded text, or JSON query parameters. Copy and download controls appear when the output format supports them.
What limitation should I know?
Use component mode for one parameter value; full-URL mode intentionally preserves URL separators.
更新内容
実質的な更新： URL Encoder: Added Component encoding, Full URL encoding, Malformed-sequence errors, Query-string parsing, responsive controls, explicit runtime disclosure, and task-specific examples and limitations.