๐Ÿ“ฐ 2026-07-02 ยท Calc-Tools Editor

URL Encoder Decoder: What is URL Encoding and Why It Matters

URL encoding (percent-encoding) is a fundamental concept in web development, ensuring special characters in URLs are transmitted correctly.

What is URL Encoding?

URLs only allow letters, numbers, and a few special characters from the ASCII set. Other characters (Chinese text, spaces, &) must be encoded as % followed by two hex digits.

Example: space โ†’ %20, ampersand โ†’ %26

When to Use URL Encoding

GET Parameters: Query parameters with special characters.

URL Paths: File names containing Chinese characters or spaces.

Form Submission: application/x-www-form-urlencoded data.

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