Question 1

What is URL encoding?

Accepted Answer

URL encoding (also called percent encoding) is the process of converting special characters in a URL into a format that can be safely transmitted over the internet. Characters like spaces, &, =, and # are replaced with a percent sign (%) followed by their hexadecimal ASCII value. For example, a space becomes %20.

Question 2

When do I need to URL encode a string?

Accepted Answer

You need to URL encode strings when passing data through URL query parameters, form submissions, or API requests. Any character outside the standard URL character set (letters, numbers, -, _, ., ~) must be encoded. This is especially important when including user-generated content, email addresses, or special symbols in URLs.

Question 3

What is the difference between encodeURI and encodeURIComponent?

Accepted Answer

encodeURI encodes a complete URL and preserves characters that have special meaning in URLs such as /, ?, #, and &. encodeURIComponent is stricter and encodes everything including those URL-structure characters, making it suitable for encoding individual query parameter values or path segments.

Question 4

How do I decode a percent-encoded URL?

Accepted Answer

Paste the percent-encoded URL or string into the input field and click 'Decode'. The tool will replace all %XX sequences with their corresponding characters, giving you the human-readable original string. This is useful for reading encoded query parameters or debugging API requests.

Question 5

Does this tool send my URL data to any server?

Accepted Answer

No. URL encoding and decoding are handled entirely in your browser using JavaScript. No data leaves your device. This makes the tool safe to use with sensitive URLs, API keys, or authentication tokens.

🔗 URL Encode & Decode

What is URL Encoding?

Common Use Cases

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