Developer

URL Decoder

Decode percent-encoded text back into a readable URL segment or query value.

Last reviewed: April 30, 2026Free toolMethodology

URL Decoder

These fields start with sample inputs. Keep them or replace them, then run the tool to show a fresh result.

Output

Calculating the sample result.

Why it matters

Encoded query strings and callback parameters are difficult to inspect without a quick decoder.

When to use

  • Inspecting nested redirect parameters
  • Debugging encoded webhook or callback URLs
  • Reading percent-encoded logs or support tickets

Inputs & Outputs

Inputs

  • Input should be a valid percent-encoded string or URL component.

Outputs

  • Decoded output restores the readable text.
  • Error handling helps catch malformed percent sequences.

URL decoding method

The tool reverses percent encoding and converts encoded byte sequences back into readable text.

URL decoding reverses percent-encoded byte sequences

Worked example

1

Support workflow

A developer gets an encoded callback parameter in a bug report and wants to inspect the original URL.

Inputs

  • Input: https%3A%2F%2Fexample.com%2Fpricing%3Fplan%3Dpro%26region%3Deu

Steps

  • Decode the percent-encoded sequences

Result

  • The original readable URL becomes visible again.

Edge cases & caveats

  • Malformed percent sequences will not decode correctly.
  • Encoded plus signs may need context-specific treatment depending on where they came from.

Frequently Asked Questions

Why does a plus sign not always become a space?

Because plus-as-space behavior depends on form encoding contexts. A raw URL component does not always treat plus the same way.

Can I paste a whole encoded URL here?

Yes, as long as it is percent-encoded text. The decoder simply restores the readable characters.

Keep going

Related Tools

developer

URL Encoder

Percent-encode text for safe use inside query strings, paths, or redirect parameters.

Open
developer

JWT Expiration Viewer

Decode a JSON Web Token payload and inspect its issued-at and expiration timestamps without sending the token anywhere.

Open
developer

JSON Formatter

Pretty-print raw JSON into readable, indented output for debugging, documentation, or handoff work.

Open