About URL Encoding/Decoding

URL encoding (percent-encoding) is the process of converting characters in a URL to a % followed by two hexadecimal digits. This ensures that URLs contain only valid and safe characters for transmission over the internet.

Why is URL Encoding Needed?

URLs can only use a limited set of characters from the ASCII character set. If a URL contains any of the following types of characters, it needs to be encoded:

Non-ASCII characters (e.g., Chinese, Japanese, Korean characters)
Reserved characters (e.g., :, /, ?, #, @, &, =)
Unsafe characters (e.g., spaces, ", <, >, %, {, }, |, , ^, ~, [, ], `)

Usage Examples

Here are some examples of URL encoding/decoding:

Original URL: https://example.com/?q=URL test&page=1

Encoded: https%3A%2F%2Fexample.com%2F%3Fq%3DURL%20test%26page%3D1

Encoded string: %E2%82%AC%20%24%20%C2%A3%20%E0%A8%B0%20%E2%82%B9

Decoded: € $ £ ਰ ₹

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