Free URL Encode / Decode Online
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ABOUT FREE URL ENCODE & DECODE ONLINE
Free URL Encode / Decode Online is a free online tool to encode your urls. You just need to paste your string into the input area. Then press either:
- Encode: to url-encode the string (encode the string so that it can be safely used in url).
- Decode: to url-decode the string.
What is URL Encoding (or Percentage Encoding)?
URL Encoding, also known as Percentage Encoding, is a technique to encode data in Uniform Resource Identifier (URI) so that it can be safely used in url / uri. It is also used for encoding data when your request body is "application/x-www-form-urlencoded" in form submission.
Why use Free URL Encode / Decode Online?
Completely free
Our tool is completely free. You don't need to install any software to encode & decode url. You just need to navigate to our site and use it instantly.
Secure and private
We don't process or store any of your encoded / decoded data. All encoding / decoding operation is performed in your browser.
How does URL encoding work?
URL Encoding works by converting url-unsafe characters into url-safe character, so that it can be safely used in url.
URL characters are classified into:
Classification | Characters | Description | Encoding required? |
|---|---|---|---|
Safe characters | Alphanumericals (A-Z, a-z, 0-9), dot (.), understore (_), tilde(~), hyphen (-) | These are characters that can be safely used in url without encoding. | ❌ |
Reserved characters | : / ? # [ ] @ ! $ & ' ( )* + , ; = | These characters has a special meaning (reserved purpose) in a certain context. So these characters need to be encoded to be safely-used in a url. | ✅ |
ASCII control characters | Characters that have ASCII code 127 or ASCII code in the range of 0-31 in the ASCII charset | These are control characters, so it has to be encoded to be safely used in a url. | ✅ |
Unsafe characters | space < > { } | ` ^ \ | These are unsafe characters that absolutely need encoding to be safely-used in a url, otherwise it might corrupt the url. | ✅ |
How url encoding works under the hood?
URL Encoding works by escaping (converting) url-unsafe characters to url-safe character, so that it won't corrupt the url. So you can implement the url encoding yourself without using any standard library in your framework / programming language.
URL Encoding works by escaping (converting) url-unsafe characters to url-safe character, so that it won't corrupt the url. So you can implement the url encoding yourself without using any standard library in your framework / programming language.
To implement the url encoding manually without using standard library, we simply need to replace url-unsafe characters with corresponding escape characters in the table below:
newline | space | " | % | - | . | < | > | \ | ^ | _ | ` | { | | | } | ~ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
%0A or %0D or %0D%0A | %20 | %22 | %25 | %2D | %2E | %3C | %3E | %5C | %5E | %5F | %60 | %7B | %7C | %7D | %7E |