URL Encode / Decode
Percent-encode or decode URL components.
How to use
- 选择「编码」或「解码」，结果实时自动处理。
- 「组件模式」按 encodeURIComponent 规则编码（/ ? & = 也会被编码）。
- 「完整网址模式」保留 :/?#[]@ 等结构字符，只编码中文与特殊字符。
- 非法百分号序列解码时报错并提示位置，不会输出乱码。
SSS
Does URL Encode / Decode upload my data?
No. Processing stays in your browser and is not uploaded.
Do I need an account?
No. Open and use — no signup.
How is this different from upload-based tools?
Tools run locally in your browser; content is not sent to our servers for processing.
Are there limits?
Limited by device memory and the browser; very large inputs may slow the page.