Free Online URL Encoder & Decoder
Safely encode or decode URLs, query parameters, and special characters. Ensure your links are valid and browser-friendly.
Percent Encoding
Converts unsafe characters into standard %xx format for reliable data transmission.
Instant Decoding
Reverts encoded strings back to human-readable text instantly.
Live Conversion
See results immediately as you type. No waiting, no page reloads.
100% Client-Side
Your data never leaves your browser. Secure and private processing.
Everything You Need to Know About URL Encoding
Ensure your web links work perfectly everywhere with our advanced URL Encoder & Decoder. Whether you are sending a link with special characters via email, preparing query parameters for an API, or debuggingpercent-encoding issues, Toolk makes it instant and secure.
Why Are Some Characters Encoded?
URLs are strictly defined by RFC 3986. They can only contain a small set of safe characters: alphanumerics (A-Z, a-z, 0-9) and a few symbols ( - _ . ~ ). All other characters must be encoded to ensure they don't break the URL structure or get misinterpreted by servers.
Common URL Encoded Characters
| Character | Encoded | Description |
|---|---|---|
| (space) | %20 | Space |
| ! | %21 | Exclamation Mark |
| # | %23 | Hash / Fragment Identifier |
| $ | %24 | Dollar Sign |
| & | %26 | Ampersand (Query Separator) |
| @ | %40 | At Symbol |
JavaScript Developer Tip
In JavaScript, encodeURI() is used for full URLs, whileencodeURIComponent() is used for query strings (like ?q=...). Our tool uses the safer encodeURIComponent logic to ensure maximum compatibility.