Lumarc DevTools

Encoding Tools

URL Decoder

Decode percent-encoded URL text into readable characters.

Processed locally — your data never leaves this browser. Input: URL-encoded text Output: Decoded text
URL-encoded text

Processed locally — your data never leaves this browser.

Decoded text

Tool discovery

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URL Encoder

Percent-encode text for safe use in URLs, query strings and redirect parameters.

Encoding Tools · Text → URL-encoded text

Base64 Decoder

Decode Base64 text back to UTF-8 so encoded payloads are easy to inspect.

Encoding Tools · Base64 text → Decoded text

JSON Formatter

Beautify JSON and validate syntax with readable indentation and precise parse errors.

JSON Tools · JSON text → Formatted JSON
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Example input and output

Query value

a%20value%20%26%20more
a value & more

How to use URL Decoder

Paste or enter your url-encoded text, adjust any options, then run the tool. The result appears in the output panel where you can copy or download it.

Related guides

What this tool does

The URL Decoder converts percent-encoded URL components back into readable text and reports malformed escape sequences. It is free to use and designed for technical workflows where pasted data should stay private.

Common use cases

  • Inspect query strings
  • Read encoded redirect values
  • Debug copied URLs

Privacy and security

Processed locally — your data never leaves this browser. Lumarc DevTools does not include a backend, account system or hidden analytics in this initial release.

Limitations

  • A plus sign is preserved unless it is encoded as %20 by the source system.

Frequently asked questions

What happens with malformed encoding?

The tool shows an error instead of silently changing the input.