URL 編碼 / 解碼

Building query parameters

When putting search keywords or a redirect URL into a query string, convert characters like & = ? and non-ASCII text into a form that survives the trip. It prevents mistakes when you hand-write links or generate parameters in a script.

Debugging APIs and webhooks

Paste an encoded string such as %E3%81%82 from your logs or a dashboard and decode it to see exactly what value was sent. Handy for confirming whether a request matches what you intended.

Untangling double-encoding

Decode a value like %2520 step by step to find where an extra layer of encoding crept in. Useful when chasing bugs in handoffs that cross proxies or frameworks.

處理皆在瀏覽器內完成

輸入與輸出都留在你的裝置，關閉分頁或清除快取時，暫存狀態會被移除。

關鍵資料請再次確認

結果僅供輔助，放到正式系統或對外分享前請先檢查並依需求驗證。

大型資料仰賴裝置性能

非常大的文字或檔案在部分瀏覽器可能較慢，建議重度工作時使用桌面環境。