URL Encoder/Decoder
Encode and decode URL strings for safe transmission
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URL Encoder & Decoder
Safely encode characters for use in web addresses or decode messy URLs back to readability. This tool strictly adheres to RFC 3986 standards, ensuring your URLs work correctly across all modern browsers and servers.
Why Encode?
URLs can only use a specific subset of ASCII characters. Any
unsafe characters (spaces, emojis, special symbols) must be
converted to a %XX format.
%20%26%2FCommon Pitfalls
- 🚫 Double Encoding: Encoding
%20again results in%2520. Our tool detects this pattern and warns you. - 📧 Email Subjects: "mailto:" links behave differently. Use
encodeURIComponent()for subjects and bodies to safely handle spaces and line breaks.
Technical Reference
| Function | Encodes | Best For |
|---|---|---|
| encodeURI() | Spaces and special chars, preservers : / ? # & = | Full URLs where structure must remain intact. |
| encodeURIComponent() | Everything except alphanumeric and - _ . ! ~ * ' ( ) | Query parameter values (e.g. ?q=your_value). |
FAQ
Plus (+) vs %20 for space? ▼
%20 is the standard for URL paths. + is a legacy standard used specifically in query strings
(`application/x-www-form-urlencoded`). Modern APIs
prefer %20 everywhere.Does this handle emojis? ▼
%F0%9F%9A%80.