Question 1

Is my data uploaded?

Accepted Answer

No. URL encoding and decoding are pure JavaScript operations that run entirely in your browser.

Question 2

What is URL encoding?

Accepted Answer

URL encoding (percent-encoding) replaces special characters with a percent sign followed by two hex digits. For example, a space becomes %20 and an ampersand becomes %26.

Question 3

What is the difference between encodeURIComponent and encodeURI?

Accepted Answer

This tool uses encodeURIComponent, which encodes everything except A–Z a–z 0–9 - _ . ! ~ * ' ( ). Use it for individual query parameter values. encodeURI preserves characters valid in a complete URL, such as slashes and colons.

Question 4

Can I decode a full URL?

Accepted Answer

Yes. Paste the full percent-encoded URL into the Decode tab and the tool will decode all percent-sequences back to readable characters.

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