URL decoder

URL decoder converts percent-encoded text back using form-style decoding rules. Use it to inspect a query parameter value or compare a copied encoded string with the text a receiving application may interpret.

How to use URL decoder

1. Paste the encoded component into the content field.
2. Submit the form and inspect spaces and punctuation in the result.
3. Compare the output with the expected original value before using it elsewhere.

Example and interpretation

The string hello+world decodes to hello world, while %2B decodes to a literal plus sign. The difference is important when an address contains both meaningful plus characters and spaces represented by pluses.

Compare the output with a small known example before using it in an integration. Copy the complete value, including meaningful punctuation and padding. Encoding changes a representation; it does not establish that the underlying content is trustworthy.

Limits to consider

The installed decoder treats plus as space. That rule is appropriate for form-style data but is not automatically correct for every part of a URI. Decoding once also differs from repeatedly decoding nested values. The result is not a safety check for the destination or its content.

Questions about URL decoder

Why did a plus sign become a space?

That is part of the form-style decoding implemented by this tool.

Does decoding validate a complete URL?

No. It changes the representation of the supplied text without verifying URL syntax or destination safety.

Related tools

URL encoder creates a comparison value for a round-trip test. URL parser helps inspect the components of a complete URL. Safe URL checker adds a separate and limited reputation signal.