Decode a percent-encoded URL

Decode percent-encoded URI components with URI or form rules.

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ToolURL Decode
Input
Output
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Preview

How it works

Percent triplets become hexadecimal bytes and decode through UTF-8 or a selected encoding; component mode controls whether reserved delimiters stay data. Form mode treats plus as space, while URI mode leaves plus literal.

  • Component decoding avoids changing path structure unexpectedly.
  • Form mode matches HTML submissions.

Worked example

Query Parameter
Decode a percent-encoded URL query string
Input
											hello%20world%20%26%20goodbye%3Dcruel%2Bworld
Output
												hello world & goodbye=cruel+world

When to use this

Query servers, redirects, and log viewers decode URL components.

Edge cases

  • Malformed percent escapes need rejection or preservation.
  • %2F can remain data inside a path segment.
  • Plus means space only in form encoding.

References