URL Decoder PHP

Decodes URL-encoded strings into readable text. Ideal for developers, testers, and data analysts handling query strings, payloads, and path components.

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Request Feature / Support

1,772+

Total Calculations Run

< 15ms

Browser Execution Speed

100%

Client-Side Privacy

4.9 / 5.0

User Satisfaction

Worked Example & Common Values

Below is a sample worked calculation demonstrating how URL Decoder PHP processes input data instantly inside your browser.

Sample Input Minified string: {"id":1,"status":"active","roles":["admin"]}

Computed Result

{
  "id": 1,
  "status": "active",
  "roles": [
    "admin"
  ]
}

Execution Mode Client-Side In-Browser JS

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About This Tool

This tool decodes URL-encoded data into readable text. It accepts a string containing percent-escapes (e.g., %20) and optionally decodes plus signs to spaces. It aligns with PHP's urldecode behavior and is suitable for debugging encoded API data.
Conceptually, the tool normalizes input by applying a decoding pass: optionally converting + to spaces, then interpreting % hex escapes. If nested encodings exist (double-encoded values), the tool can perform multiple passes up to a limit to reveal the final plain text.
Who benefits: developers building APIs, QA engineers validating form submissions, data analysts cleaning logs, and support engineers inspecting encoded telemetry. It supports UTF-8; results are plain text strings that can be re-encoded if needed.
Unique value: provides iterative decoding, ability to switch between urldecode and rawurldecode, and explicit handling of invalid percent sequences without crashing. It is a focused, fast transformation that integrates into automated pipelines.

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How to Use

Provide inputs: input_string, treat_plus_as_space, max_decode_passes, use_rawurldecode.
Choose decoding mode and passes.
Run decoding and obtain decoded_string.
Validate and use in code or logs.
Optionally re-encode for storage or display.

Frequently Asked Questions

Find Quick Answers

What does this tool decode?

It decodes percent-encoded bytes and, by default, plus signs to spaces, aligning with application/x-www-form-urlencoded conventions.

What about nested encodings?

If the input contains double-encoded data, you can run multiple passes to reveal the final plain text, up to a configured limit.

What encoding is assumed?

UTF-8 is assumed; inputs with other encodings may produce garbled characters.

Is this tool secure for sensitive data?

This is a transformation utility. It processes data as part of a request and does not store it beyond the request. Do not rely on it for handling highly sensitive or private information without appropriate safeguards.

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