URL Encoder / Decoder

编码或解码URL组件。
结果

Encode & Decode

encodeURIComponent and encodeURI modes.

Real-time

Results update as you type.

Copy Result

One-click copy to clipboard.

Client-side

All processing in your browser. No data uploaded.

关于URL Encoder / Decoder

URL encoding, also called percent-encoding, converts characters that are not allowed or have special meaning in URLs into a safe format. Each unsafe character is replaced by a percent sign followed by its two-digit hexadecimal code point — for example, a space becomes %20 and an ampersand becomes %26. This tool supports two standard JavaScript functions: encodeURIComponent encodes everything except letters, digits, and the characters - _ . ! ~ * ' ( ), making it ideal for encoding individual query parameter values. encodeURI encodes a full URL and preserves characters like : / ? # & = that have structural meaning in a URL. Proper URL encoding is essential for building web applications, constructing API request URLs, handling form submissions, and ensuring links work correctly across browsers and operating systems. Decoding lets you inspect encoded URLs and query strings in a human-readable form. This tool processes everything client-side so your data stays private.

如何使用URL Encoder / Decoder

  1. Choose "Encode" to percent-encode text or "Decode" to convert encoded strings back to plain text.
  2. Select the encoding scope: use "encodeURIComponent" for a single value (e.g., a query param), or "encodeURI" for a full URL.
  3. Type or paste your text into the input field.
  4. The encoded or decoded result appears instantly in the output field.
  5. Click "Copy" to copy the result to your clipboard.

常见问题

What is the difference between encodeURIComponent and encodeURI?

encodeURIComponent encodes almost everything except basic alphanumeric characters, making it suitable for encoding individual query parameter values. encodeURI preserves characters that are structurally part of a URL (like /, ?, #, &) so it is meant for encoding complete URLs.

Why does a space become %20 and not +?

%20 is the standard percent-encoding for a space. The + notation for spaces is specific to the application/x-www-form-urlencoded format used in HTML form submissions, not in general URLs.

When would I need to URL-encode a string?

Whenever you embed a value inside a URL — such as a search query, a file path, or a user-provided parameter — you should URL-encode it to prevent special characters from breaking the URL structure or being misinterpreted by the server.

Can I URL-decode multiple parameters at once?

Yes — paste the full query string (e.g., name=John%20Doe&city=S%C3%A3o+Paulo) and switch to Decode with encodeURIComponent mode to see the decoded result. Each parameter will be decoded inline.

Is this tool safe for sensitive data?

All processing happens in your browser with no server communication, so your data remains private. That said, URL encoding is not encryption — encoded values can be decoded by anyone who sees them.

URL Encoder / Decoder 完全使用指南与免费在线工具

无需安装、完全免费、纯前端本地运行的高效 URL Encoder / Decoder 工具

用于快速解决：编码或解码URL组件。。无需安装复杂软件，打开网页即可立即使用，极速且安全。

为什么选择 Metoolzy 的 URL Encoder / Decoder？

  • 秒级即时响应: 极致性能优化，输入即可见结果。
  • 数据绝对安全: 纯浏览器本地计算，数据绝不上传服务器。
  • 完全免费使用: 无需注册登录，无任何隐形消费。

三步快速上手

  1. 打开 Metoolzy URL Encoder / Decoder 工具页面。
  2. 在输入区粘贴或上传您的数据。
  3. 即时查看处理结果并点击复制或下载。

功能对比表

对比项 Metoolzy URL Encoder / Decoder 普通在线工具 本地客户端软件
使用成本 永久免费 有次数限制或收费 需购买授权
隐私保护 纯本地内存运行 数据需上传云端 本地运行

适用人群与应用场景

  • 软件开发人员日常调试与数据转换
  • UI/UX 设计师资产处理
  • 运营与办公人员效率提升

常见问题解答 (FAQ)

处理的数据会被记录或保存吗？

绝不会。所有运算均在您的浏览器本地完成，没有任何数据回传。