URL Encoder/Decoder Tool
Encode special characters in URLs or decode encoded URLs back to original text
Operation Type
Enter Text or URL
Characters: 0
Bytes: 0
Quick Examples:
0
Input Size
0
Output Size
Processing…
Processing Results
URL Encoding/Decoding
Operation:
Encode
Input Size:
0 chars
Output Size:
0 chars
Size Change:
0%
Formula: URL Encoding replaces unsafe characters with % followed by two hexadecimal digits
How URL Encoding Works
URL encoding converts characters into a format that can be transmitted over the Internet:
- Space becomes %20 or +
- Ampersand (&) becomes %26
- Question mark (?) becomes %3F
- Equals (=) becomes %3D
- Plus (+) becomes %2B
// Original URL:
https://example.com/search?q=hello world&page=1
// Encoded URL:
https://example.com/search?q=hello%20world&page=1
Note:
encodeURI() encodes complete URLs, while encodeURIComponent() encodes individual URI components (like query parameters).
Enter text to encode or decode and see the results here
Processing History
Your encoding/decoding history will appear here
About URL Encoding
URL encoding (also known as percent-encoding) is a mechanism for encoding information in a Uniform Resource Identifier (URI).
- Safe Characters: Alphanumeric characters and -_.~ are not encoded
- Reserved Characters: ! * ‘ ( ) ; : @ & = + $ , / ? % # [ ] are encoded
- Unsafe Characters: Space, <, >, “, {, }, |, \, ^, ~, [, ], ` are always encoded
- UTF-8 Encoding: Non-ASCII characters are encoded as multiple bytes
- Percent Sign: Encoded characters start with % followed by two hex digits
URL encoding ensures that URLs are properly formatted and can be transmitted over the Internet without issues.
Important: Always use
encodeURIComponent() for query parameters and encodeURI() for complete URLs. Decode using the corresponding decode functions.