Question 1

What characters are encoded?

Accepted Answer

All characters except A-Z, a-z, 0-9, and the special characters - _ . ! ~ * ' ( ) are replaced with percent-encoded equivalents. For example, a space becomes %20 and & becomes %26.

Question 2

What is the difference between encodeURI and encodeURIComponent?

Accepted Answer

encodeURIComponent encodes more characters (including / ? & = #) making it safe for use in query string values. encodeURI leaves URL-structural characters intact. This tool uses encodeURIComponent for maximum safety.

Question 3

When should I use URL encoding?

Accepted Answer

Use URL encoding whenever you embed user input in a URL query string, form data, or any place where special characters could break the URL structure.

URL Encode

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